The distance between the y value in the data and the y value predicted from the regression equation is known as the residual. what is the value for the sum of the squared residuals
Answers
B. SS = (1-r²)(SS_x)
C. SS = r²(SS_y)
D. SS= (1-r²)(SS_y)
The residual sum is given in the picture below so it is D which is correct.
The value for the sum of the squared residuals is SS(residuals) = (1 - r²) SS(y).
What is meant by Residual Value?Residual value is defined as the difference of the value that we predicts with that of the observed value.
Given that,
The distance between the y value in the data and the y value predicted from the regression equation is known as the residual.
Sum of the squared residuals is used to measure the variance level in a regression model.
We know that,
r² = 1 - [SS(residuals) / SS(total)]
[SS(residuals) / SS(total)] = 1 - r²
SS(residuals) = (1 - r²) SS(total)
SS(residuals) = (1 - r²) SS(y)
Hence the value is SS(residuals) = (1 - r²) SS(y).
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Related Questions
BRAINLIST ANSWER!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1. A wooden plank is leaning against an outside wall of a building. The bottom of the plank is 3 ft from the wall. Find each of the following values, and show all your work.
(a) Find the approximate length of the plank. Round to the nearest tenth of a foot.
(b) Find the height above the ground where the plank touches the wall. Round to the nearest tenth of a foot.
2. A support wire is strung from a tree. The bottom of the wire is 24 ft from the tree. The length of the wire is 30 ft. Find each of the following values, and show all your work.
(a) Find the value of x. Round to the nearest tenth of a degree.
(b) Find the approximate height where the wire touches the tree. Round to the nearest foot.
Answers
(a) Using sine rule
ground/Sin 49 = plank/Sin 90
But sine 90 = 1, ground = 3 ft
Then,
3/Sin 49 = plank
Length of the plank = 3/Sin 49 ≈ 4.0 ft (rounded to nearest tenth)
(b) Height where the plank touches the wall
wall = Sqrt (plank^2 - ground^2) = Sqrt (4.0^2 - 3.0^2) ≈ 2.6 ft (Rounded to nearest tenth)
Question 2:
(a) Angle x
ground = 24 ft
support wire = 30 ft
Applying sine rule
support wire/Sin 90 = ground/Sin (90-x) ----- but Sin 90 = 1
Then,
Support wire = ground/Sin (90-x)
Sin (90-x) = ground/support wire = 24/30 = 0.8
90-x = Sin^-1(0.8) = 53.13 => x = 90-53.13 = 36.9°
(b) Height where the wire touches the tree (tree)
tree = Sqrt (support wire^2 - ground^2) = Sqrt (30^2 - 24^2) = 18 ft
Which of the following sequences of numbers are arithmetic sequences?
Check all that apply.
A.2, 4, 6, 8, 10, ...
B.1, 1, 1, 1, 1, ...
C.1, 2, 3, 5, 6, 7, ....
D.3.0, 3.1, 3.2, 3.3, 3.4, ...
E.2, -4, 6, -8, 10, ...
Answers
In the choices above, only A and D are arithmetic sequences.
In A, the common difference is 2 while in D, it's 0 .1.
B can't be an arithmetic sequence since the number 1 is just being repeated many times, there's no progression.
C as well. Be observant of the pattern, it can be an arithmetic sequence only if it has 4 before 5.
E obviously is not an arithmetic sequence. If you try to find the difference between the consecutive terms, it's not common.
Given a point and a plane, how do you find a line that is parallel to the plane that passes through the point?
Answers
M1=M2 only if the lines are parallel...
and then we should take one point from our line and solve the equation with the standard line formula.
Y=m(x-X1) +Y1
Determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 16
Answers
(y – 4)(y + 4) it is a difference this is it. I did the test just a second ago.
Please help asap xx
The picture below shows a container that Jeff uses to freeze water:
What is the minimum number of identical containers that Jeff would need to make 2000 cm3 of ice? (Use π = 3.14.)
A. 8
B. 4
C. 2
D. 16
Answers
The diameter is 8 and we'll reduce that to 4 so we can use [tex] \pi [/tex]R2.
3.14*16 is 50.24. Then we'll multiply that by the height which is 10 to get 502.4cm3.
Now we'll divide 2000/502.4 to see how many containers Jeff would need to make to make 2000 cm3 of ice.
This comes out to 3.98 but we can round it up to 4.
B. 4
(should I explain?)
Hey there!
We are looking for cm[tex]^{3}[/tex], so therefore we will be dealing with volume.
The formula for the volume of a cylinder is shown below.
V= h([tex]\pi[/tex]r²)
Our base has a diameter of 8. The radius is half of the diameter, so our radius is 4. Our height is also 10, so will plug that in for h.
We can plug our values into the equation.
V= 10([tex]\pi[/tex]4²)
V=10(16[tex]\pi[/tex])
We simplify further, using 3.14 for pi.
V=10(50.24)
V=502.4
Therefore, the volume of one cylinder is 502.4.
Now, we need to see how many of these cylinders we need to get 2,000 cm³ of ice. We will divide below.
2,000÷502.4≈3.98
Therefore, we cannot have 2 as it will not be enough. 3.98 is about 4, so that would be the best minimum amount.
Therefore, your answer would be B) 4.
I hope this helps!
Given: Circle M with inscribed and congruent radii JM and ML Prove: m = What is the missing reason in step 8? Statements Reasons 1. circle M with inscribed ∠KJL and congruent radii JM and ML 1. given 2. △JML is isosceles 2. isos. △s have two congruent sides 3. m∠MJL = m∠MLJ 3. base ∠s of isos. △are ≅ and have = measures 4. m∠MJL + m∠MLJ = 2(m∠MJL) 4. substitution property 5. m∠KML = m∠MJL + m∠MLJ 5. measure of ext. ∠ equals sum of measures of remote int. ∠s of a △ 6. m∠KML =2(m∠MJL) 6. substitution property 7. 7. central ∠ of △ and intercepted arc have same measure 8. 8. ? 9. 9. multiplication property of equality reflexive property substitution property base angles theorem second corollary to the inscribed angles theorem Mark this and return
Answers
Substitution Property is considered as one of the most intuitive of the mathematical properties that you'll probably encounter. You may have been using substitution without even knowing it. This property says that if x=y, then in any true equation involving y, you can replace y with x, and yet you'll still have a true equation.
Take a look at the attached example shown below.
Answer:
substituition property
Step-by-step explanation:
The scores of several classmates on a language arts test are shown below: 86 points 87 points 87 points 94 points 95 points 82 points 78 points 89 points 80 points 84 points What is the median score for these students? 87.5 points 87 points 86.5 points 86 points
Answers
Answer:
Your answer would be 87.5
Step-by-step explanation:
The reason that I know is because 87 is the most used number in this situation which it then makes it 87.5.
Answer:
87.5 would be the correct answer!
Step-by-step explanation:
if you follow every set of points then the median would be 87.5
Solve for x: x^2-36=0
Answers
Answer:
-6, 6
Step-by-step explanation:
Use a scientific calculator to find the logarithm for each number rounded ro four decimal places. Then state characteristic and the mantis.
12
A. 2.3855; -2 0.9564
B. 1.0793; 1; 0.0792
C. 0.5648; 0; 0.5648
D. -1.0458 -2; 0.0542
Answers
log 12 = 1.079181246
Rounded to four decimal places:
log 12 = 1.0792
Characteristic: 1; Mantis: 0.0792
Answer: OPtion B. 1.0792; 1; 0.0792
according to the model which of the following temperatures to the nearest tenth of a degree would make the ice cream shop have a positive profit?
Answers
A. c = 17.6(17.6) -721.6 = -411.84
B. c = 17.6(35.2) - 721.6 = -102.08
C. c = 17.6(41.0) - 721.6 = 0
D. c= 17.6(72.2) - 721.6 = 549.12
the only one with a positive answer is D
In 2011, the U.S. Centers for Control and Prevention (CDC) conducted a survey to track a wide variety of risky behavior by American youth. The following table summarizes the responses of 12^th grade males and females and their helmet wearing habits
Answers
The age of a father is 2 less than 7 times the age of his son. In 3 years, the sum of their ages will be 52. If the son’s present age is s years, which equation models this situation?
Answers
Answer:
Son’s present age, s = 6 years.
Step-by-step explanation:
Let the son’s present age is s years and father's be f.
We have age of a father is 2 less than 7 times the age of his son.
f = 7s -2
7s - f = 2 -------------------eqn 1
In 3 years, the sum of their ages will be 52.
s + 3 + f + 3 = 52
s + f = 46 -------------------eqn 2
eqn 1 + eqn 2
8s = 48
s = 6
Son’s present age, s = 6 years.
If line t is perpendicular to both line l and line m, then ∠1 and ∠2 are both ____ angles. Question acute right obtuse complementary
Answers
Answer:
∠1 and ∠2 both are right angles.
Step-by-step explanation:
Given that if line t is perpendicular to both line l and line m, then
we have to find about the angle ∠1 and ∠2
As given line l is perpendicular to both line l and line m,
Therefore the point at which the ;line intersect the two lines l and m at 90° i.e
∠1 and ∠2 both angles are formed at the intersection points of line t with l and m.
Hence, ∠1 and ∠2 both are right angles.
which of the following expressions is the inverse of the function
[tex]y = \frac{x - 2}{3} [/tex]
Answers
Answer: [tex]y^{-1}=3x+2[/tex]
Find all the solutions of the equation in the interval 0 2pi) 2sin2x=2+cosx
Answers
2sin(x)^2 = 2 - 2cos(x)^2
2cos(x)^2 + cos(x) = 0
cos(x)(2cos(x) + 1) = 0
cos(x) = 0 or cos(x) = -1/2
x = π/2, 3π/2, 2π/3, 4π/3
What is the sector with a central angle of 185 degrees and a diameter of 6.4 m? Round to the nearest tenth.
66.1m^2
5.3m^2
16.5m^2
21.0m^2
Answers
[tex]A=\frac{1}{2}r^2\theta =\frac{1}{2}\left(3.2\:m\right)^2\left(185\cdot \frac{\pi }{180}\right)=16.5\:m^2[/tex]
The answer is 16.5 square meters.
Geometry B Unit 5: Area - Lesson 10: Area Unit Test
1. What is the area of the trapezoid? The diagram is not drawn to scale.
72 cm^2
2. Given the regular polygon, what is the measure of each numbered angle?
m∡1 = 36°; m∡2 = 72°
3. What are a) the ratio of the perimeters and b) the ratio of the areas of the larger figure to the smaller figure? The figures are not drawn to scale.
5/2 and 25/4
4. What is the area of a regular pentagon with a side of 12 in.? Round the answer to the nearest tenth.
247.7 in.2
5. Name the minor arc and find its measure.
AB; 162°
6. What is the circumference of the given circle in terms of pi_symbol?
28pi in.
7. What is the area of the given circle in terms of pi?
10.89pi m^2
8. What is the area of a sector with a central angle of 185° and a diameter of 6.4 m? Round the answer to the nearest tenth.
16.5 m^2
9. What is the area of the shaded region in the given circle in terms of pi_symbol and in simplest form?
(270 pi + 81 Root 3) m^2
If f(x)=2x and g(x)=x^{2}-1, which statement is true?
a) 2x^{2}-1
b) 2x(x^{2}-1)
c) 4x-1
d) 4x^{2}-1
Answers
...............................................
For the standard normal curve, find the z-score that corresponds to the 90th percentile.
Answers
Using a z-table(also attached) or a technology, we can solve that z=1.28.
what expression is equivalent to 20+8y-9y-21
Answers
The first step for solving this expression is to calculate the difference between 20 and -21.
-1 + 8y - 9y
Now collect the like terms for y by subtracting their coefficients.
(8 - 9)y
Subtract the numbers in the parenthesis.
-1y
When a term has a coefficient of -1,, the number doesn't have to written but the sign needs to remain. Knowing this,, our final answer will be the following:
-1 - y
Let me know if you have any further questions.
:)
Final answer:
The expression equivalent to 20+8y-9y-21 is simplified by combining like terms, resulting in -1y - 1 or simply -y - 1.
Explanation:
To find an expression that is equivalent to 20+8y-9y-21, we need to combine like terms. The terms 8y and -9y are like terms because they have the same variable raised to the same power. The terms 20 and -21 are also like terms because they are both constants.
Combine the like terms:
8y - 9y = -1y
20 - 21 = -1
Now, put the simplified terms together:
-1y - 1
Therefore, the expression that is equivalent to 20+8y-9y-21 is -1y - 1, which can also be written as -y - 1.
A manufacturer packages bolts in boxes containing 100 each. each box of 100 bolts contains on average four defective bolts. the quality control staff randomly selects a box at the end of the day from an entire production run. what is the probability that the box will contain less than three defective bolts? use the poisson distribution table.
Answers
[tex]P(k)=e^{-\lambda} \frac{\lambda^k}{k!} [/tex]
where: [tex]\lambda[/tex] is the average number of events and k is the required probability.
Given that a manufacturer packages bolts in boxes containing 100 each and that each box of 100 bolts contains on average four defective bolts. Thus, [tex]\lambda=4[/tex].
The probability that the box will contain less than three defective bolts is given by:
[tex]P(0)+P(1)+P(2)=e^{-4}\cdot \frac{4^0}{0!} +e^{-4}\cdot \frac{4^1}{1!} +e^{-4}\cdot \frac{4^2}{2!} \\ \\ =e^{-4}(1+4+8)=13(0.0183)=0.2381[/tex]
Using Poisson Distribution, the probability that the box will contain less than three defective bolts is computed by adding up the probabilities of finding 0, 1, or 2 defective bolts in a box. The average occurrence rate is 4 defective bolts on average.
Explanation:Based on the provided details, we can conclude that this is a problem involving Poisson Distribution. The key parameters here are that the box contains 100 bolts and on average, 4 bolts are defective. The question asks for the probability that the box will contain less than three defective bolts, or in other words the probability that there are either 0, 1, or 2 defective bolts in a box. With a Poisson distribution, the formula to calculate the probability is P = lambda^k * exp(-lambda) / k! where lambda is the average occurrence rate, k is the number of occurrences of the event, and exp refers to the exponential function.
To calculate the probability of finding less than 3 defective bolts, we add together the probabilities of finding 0, 1, and 2 defective bolts using the above formula. In this example, lambda = 4 defective bolts on average, and we substitute k with 0, 1, and 2 respectively. Solve these cases separately and then add them up, that will give you the probability that a box will contain less than three defective bolts.
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Anyone know this geometry question?
Answers
Are opposite on the vertical
The scatter plot shows the relationship between the number of hours spent jogging and the number of minutes spent stretching, by the students on a track team:
A scatter plot is shown titled fitness routine. The x-axis is labeled hours jogging and the y-axis is labeled minutes stretching. Data points are located at 0 and 1, 2 and 1, 2 and 2, 4 and 3, 4 and 5, 6 and 3, 7 and 5, 9 and 4. A line connects the points 0 comma 1 and 10 comma 6.
What is the y-intercept of the line of best fit and what does it represent? (4 points)
1 minute; the number of minutes students stretch when they do not jog
1 hour; the number of hours students jog when they do not stretch
4 hours; the number of hours students jog when they do not stretch
4 minutes; the number of minutes students stretch when they do not jog
4.
(06.04)
The line of best fit for a scatter plot is shown:
A scatter plot and line of best fit are shown. Data points are located at 0 and 1, 2 and 1, 2 and 3, 4 and 3, 4 and 5, 6 and 3, 7 and 5, 9 and 4. A line of best fit passes through the y-axis at 1 and through the point 4 and 3.
What is the equation of this line of best fit in slope-intercept form? (4 points)
y = 1x + one half
y = one halfx + 1
y = 1x − one half
y = negative one halfx + 1
5.
(06.04)
The graph shows the number of cakes sold at Karen's Cake Shoppe for each of their 7 weeks in business:
A scatter plot is shown with the title Karens Cake Shoppe. The x axis is labeled Weeks in Business, and the y axis is labeled cakes sold. The data points are located at 1 and 2, 2 and 4, 3 and 5, 4 and 4, 5 and 6, 6 and 5, and 7 and 8. A line of best fit passes through the y axis at 1 and through the point 10 and 10.
If her current pattern continues, how many cakes will Karen most likely sell in her 10th week of business? (4 points)
10, because approximately y = 9 over 10.x + 1
11, because approximately y = 9 over 10.x + 1
8, because approximately y = 1x − 1
12, because approximately y = 1x + 2
Answers
#4) y=1/2x + 1
#5) 10 cakes, because y=9/10x+1
Explanation
For the first question: The y-intercept is easily picked from the two points that define the line. (0, 1) would have to be on the y-axis, because when we plot it, the x-coordinate is 0. This means it is the y-intercept of the line.
#4) Finding the slope of the line, we use the formula
m=(y₂-y₁)/(x₂-x₁) = (3-1)/(4-0) = 2/4 = 1/2
The y-intercept is at (0, 1), using the same justification as the first question.
This gives us the equation y = 1/2x + 1.
#5) First we find the equation of the line. To do this, find the slope:
m=(y₂-y₁)/(x₂-x₁) = (10-1)/(10-0) = 9/10
The y-intercept is at (0, 1). This makes our equation y=9/10x + 1.
Using 10 as x (x represents the number of weeks) we have
y=9/10(10) + 1
y=9/10(10/1) + 1
y=90/10 + 1
y=9+1 = 10
The y-intercept in the first scenario represents the estimated stretching time if no jogging is done. In the second situation, the line of best fit equation shows that for each additional hour of jogging, an extra half minute of stretching is estimated. In the third scenario, Karen is predicted to sell about 12 cakes on her tenth week of operation.
The subject of this question is mathematics, specifically the concept of scatter plots and the line of best fit in linear regression. In the first scenario, the y-intercept of the line of best fit is 1 minute, which represents the estimated amount of time a student would spend stretching if they did not jog at all.
In the second scenario, the equation of the line of best fit is y = 0.5x + 1. This equation represents a relationship between the number of hours spent jogging (x) and the estimated minutes of stretching (y), where for every one extra hour of jogging, it is estimated that an additional half a minute is spent stretching.
Lastly, in the third scenario, using the line of best fit, Karen will likely sell approximately 12 cakes because the line of best fit is approximately y = 1x + 2, and substituting 10 for x (10th week), we get 12 (cakes).
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What is the measure of ∠P ? Round your answer to the nearest degree.
A.) 29°
B.) 42°
C.) 65°
D.) 78°
Answers
Answer:
B. [tex]42^{\circ}[/tex]
Step-by-step explanation:
We have been given an image of a triangle. We are asked to find the measure of angle P.
We will use law of sines to solve for angle P.
[tex]\frac{sin(A)}{a}=\frac{sin(B)}{b}=\frac{sin(C)}{c}[/tex], where a, b and c are the sides corresponding to the angles A, B and C.
Upon substituting our given values we will get,
[tex]\frac{sin(P)}{QR}=\frac{sin(Q)}{PR}[/tex]
[tex]\frac{sin(P)}{47.6}=\frac{sin(73^{\circ})}{68}[/tex]
[tex]\frac{sin(P)}{47.6}=\frac{0.956304755963}{68}[/tex]
[tex]\frac{sin(P)}{47.6}=0.01406330523475[/tex]
[tex]\frac{sin(P)}{47.6}\times 47.6=0.01406330523475\times 47.6[/tex]
[tex]sin(P)=0.6694133291741[/tex]
Now we will use arcsin to find the measure of angle P.
[tex]P=sin^{-1}(0.6694133291741)[/tex]
[tex]P=42.021801403079^{\circ}\approx 42^{\circ}[/tex]
Therefore, the measure of angle P is 42 degrees and option B is the correct choice.
6. Food Express is running a special promotion in which customers can win a free gallon of milk with their food purchase if there is a star on their receipt. So far, 147 of the first 156 customers have not received a star on their receipts. What is experimental probability of winning a free gallon of milk?
A. 11/156
B. 49/52
C. 2/39
D. 3/52*****?
Answers
If 147 people have not won, this means that 9 people have won.
9 have won/156 total customers simplifies to 3/52.
3/52 is the experimental probability of winning a free gallon of milk.
[tex] |\Omega|=156\\
|A|=156-147=9\\\\
P(A)=\dfrac{9}{156}=\dfrac{3}{52}\implies \text{D} [/tex]
PLEASE HELP ME FAST I WILL GIVE BRAINLIEST TO BEST AND FASTEST ANSWER
Perform the indicated operation.
(6f 2 - 13 - 11f) ÷ (3f - 4)
2f + 1 R 17
2f - 1 R -17
2f - 1
If you would like please tell me what the R means
Answers
Answer: 2f - 1, remainder -17
Answer: 2f - 1, remainder -17
Step-by-step explanation:
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Michelle can fold 4 baskets of clothes in 54 minutes, while Ruby can fold 4 baskets of clothes in 108 minutes. How long will it take them to fold 8 baskets of clothes if they are working together?
Answers
Ruby can fold 4/108 baskets per minute.
Each minute Michelle and Ruby work together, they can fold
8/108 +4/108 = 12/108 = 1/9
of a basket of clothes. For 8 baskets of clothes, it will take them
(8 baskets)/(1/9 baskets/minute) = 72 minutes
Working together, they fold (8) baskets in (72) minutes, averaging
[tex]\(\frac{1}{9}\)[/tex] of a basket per minute combined.
First, let's find out how many baskets of clothes each person can fold per minute.
Michelle can fold [tex]\( \frac{4}{54} \)[/tex] baskets per minute, and Ruby can fold [tex]\( \frac{4}{108} \)[/tex] baskets per minute.
Let's simplify these fractions:
Michelle's rate: [tex]\( \frac{4}{54} = \frac{2}{27} \)[/tex] baskets per minute.
Ruby's rate[tex]: \( \frac{4}{108} = \frac{1}{27} \)[/tex] baskets per minute.
Now, when they work together, their combined rate will be the sum of their individual rates:
Combined rate = Michelle's rate + Ruby's rate
Combined rate = [tex]\( \frac{2}{27} + \frac{1}{27} \)[/tex] baskets per minute
Combined rate = [tex]\( \frac{3}{27} \)[/tex] baskets per minute
Combined rate = [tex]\( \frac{1}{9} \)[/tex] baskets per minute
Now, to find out how long it will take them to fold 8 baskets together, we can use the combined rate:
Let ( t) be the time it takes for them to fold 8 baskets together.
[tex]\( \frac{1}{9} \) baskets per minute * \( t \) minutes = 8 baskets\[ t = \frac{8}{\frac{1}{9}} \]\[ t = 8 \times 9 \]\[ t = 72 \] minutes[/tex]
So, it will take them 72 minutes to fold 8 baskets of clothes together.
Find the area of the shaded portion in the square.
(assuming the central point of each arc is the corresponding corner
Answers
Please, see the attached file.
Thanks.
Area is the distance around a shape while perimeter is the space within a shape.
a) true
b) false
Answers
but if it is wrong im sorry
therefore it is false.
you buy a circular rug with a diameter of 8 feet how much floor space for the rug cover
Answers
16 * Pi = 50.265 the rug will take up 50.265 ft
The circular rug with a diameter of 8 feet covers approximately 50.27 square feet of floor space. This was calculated by finding the area of the circle using the formula πr².
Explanation:The question refers to how much floor space a circular rug with a diameter of 8 feet will cover. To solve this, you need to calculate the area of the circle. The formula for the area of a circle is πr², where r is the radius of the circle. But we were given the diameter, which is twice the radius. So the radius of the rug is 8/2 = 4 feet.
Substitute r=4 into the formula: Area = π(4²) = 16π square feet. Therefore, the circular rug covers 16π, or approximately 50.27 square feet of floor space.
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Determine if the statement is always, sometimes, or never true: A scalene triangle is an acute triangle.
Answers
Answer:
it is true
Step-by-step explanation: