In the least-squares regression line, the desired sum of the errors (residuals) should be:_____.
a) maximized.
b) 1.
c) positive.
d) negative.
e) zero.

Answers

Answer 1
The answer is C post it I’ve
Answer 2

In the least-squares regression line, the desired sum of the errors (residuals) should be: zero

What is Number system?

A number system is defined as a system of writing to express numbers.

The key word here is "desired". We wish to make the errors as small as possible. The smallest any individual error can get is 0. Adding the entire collection of zeros will sum in a total of zero.

An error of zero means we hit the mark exactly. The unfortunate reality is that error is going to happen, so we'll have some positive error values with any regression line (or curve). It's only when all points are on the same line is when we have zero error and perfect interpolation rather than regression.

Again, the question is asking about desired error and the ultimate goal is to make the error zero. The next best thing is to minimize it as small as possible

Hence in the least-squares regression line, the desired sum of the errors (residuals) should be: zero

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Related Questions

which situion is represented shown below 3x+9 =15

Answers

Answer:

x=2

Step-by-step explanation:

Which mapping diagram does NOT represent yas a function of x?​

Answers

The answer is D because for it to be a function x-value can only have one output. For D, 8 has two outputs 1 and 4.

I cannot see the picture but according to everyone that saw it is D

Bouncing Baby Company sells their cribs for the following amounts to stores:

Number of Cribs Price
10 $1320
50 $6600

Which of the following statements about the price of the cribs are true if the price remains proportional to the number of cribs? Select TWO that apply.

A
6 cribs cost $660
B
22 cribs cost $2640
C
40 cribs cost $5280
D
55 cribs cost $7920
E
80 cribs cost $10,560
F
250 cribs cost $11

Answers

Answer:

C and E

Step-by-step explanation:

Ik u prolly dont care about the explanation but ill just say it

the ratio is 1:132 or 1 crib is $132. So 40 x 132 = 5280 and 80 x 132 = 10560

For the test im doing the answer is C and D  yw ;D

PLEASE HELP URGENT I NEED THIS LIKE RIGHT NOW PLEASE HELP MEEEEEEEE

Answers

Answer:

45

Step-by-step explanation:

Answer:

The length of the body is 45.

Step-by-step explanation:

The violin and bass have an equal ratio, to find the ratio find the two given lengths and divide them, 72 ÷ 24 = 3. So the ratio is 3:1. To find the body of the bass you just have to do 15 × 3. Which is 45.

PLEASE HELP STATTTT

73 people need to ride the elevator to the top of a skyscraper. The elevator can hold 5 people at a time. How many people will be in the elevator on the last trip to the top?

Answers

It would be 3 :) hope this helps

HURRY! The question is in the picture!!!

Answers

Answer:

6

Step-by-step explanation:

I checked it and it’s right hope this helps!!

PLS HELP ASAP... WILL MARK BRAINLIEST!!!!


Parallel lines r and s are cut by two transversals, parallel lines t and u.

How many angles are alternate exterior angles with angle 5?

Answers

4 or more i might be wrong though

Answer: 1

Step-by-step explanation:

I got right edgy I know is crazy but trust

Hi! Need help rly quick ☺️, will mark brainilest!!

Answers

Answer:

A.

Step-by-step explanation:

Subtract -4x on both sides to get to -2y=-4x-8, then you should divide -2 into both sides to get to the slope of y=2x+4 since two negatives would equal to a positive when dividing and multiplying.  Because the slope is positive, it is safe to assume that the first two options A and B are the best options due to their slopes being positive and going up.  The y-intercept is 4 which makes the answer A because on 0 it is on the positive side.

Determine whether the triangles are similar by AA~, SSS~, SAS~, or not similar.
If the triangles are similar, write a valid similarity statement.​

Answers

Answer:

the AA~ congruency could be used, because

angle w=y,

angle t=z

and angle x is common

Step-by-step explanation:

That was my answer and I got it right :)

The given triangles are not similar.

What is similarity of triangles?

Two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion.

Given a figure of two triangles, ΔWXT and ΔYXZ

Here,

28/35 ≠ 30/38

WX/YX ≠ XT/XZ

We can conclude that, the corresponding sides are not in common ratio, so triangles are not similar.

Hence, The given triangles are not similar.

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What is the y-intercept of the line?

Answers

Answer:

y= -1

The Y-intercept is the point at which the line segment intersects with the Y-Axis.

Answer:

1

Solution:The y-intercept, b, is the point where the graph intersects the y-axis.It's usually written as:(0, b).We already know what b stands for. It stands for the y-intercept.Since the graph intersects the y-axis at (0, 1) the y-intercept is (0, 1) or 1.

Hope it helps.

Do comment if you have any query.

x^2 when x=5 how to work it out ​

Answers

Answer:

x^2 = 5^2 = 25

Answer:

mine answer/opinion is like this..............

I don't get this find all missing angles what does it mean how do I do it

Answers

First, you can find angle 1 by using the triangle angle formula, stating that all angles add up to 180 deg. Thus, angle 1 is equal to 180-72-57= 51 deg.

Next, you can find angle 2 by using the right angle shown. This means that angle 2 plus 72 deg = 90 deg. Thus, angle 2 is equal to 90-72= 18 deg.

For angle 3, notice that it is bordering the other angle on a straight line. A straight line is equal to 180 deg. This means that angle 3 + 57 deg = 180 deg. Thus, angle 3 is equal to 180-57= 123 deg.

Angle 4 can be found by using the triangle angle formula used for angle 1. In this case, angle 2+3+4 will equal 180 deg. Thus, angle 4 is equal to 180-18-123= 29 deg.

Answer:

1= 51

2= 18

3= 123

4= 39

Step-by-step explanation:

First you must know that all triangles equal 180. From there you can add and subtract the known numbers to get your answers. For example with angle 1, because you are give 72 and 57 you must add them together to get 129 then subtract that from 180 to get 51. You can do similar steps for all the angles to receive the answers.

pls help will give brainliest to best answer

Answers

Answer:

y=250x-4

Step-by-step explanation:

If y represents the amount of money made in a week, y=250.

If x represents the amount of cakes that are made, x=?

You make $250(y) a week, you then spend $4(x) per cake, this would make the equation:

y=250x-4

Can somebody please help me out with this ??

Answers

Answer:

Y=109 X=31

Step-by-step explanation:

Alright, so the angles that you have to find the values for make up 180 degrees. Since you have 71 degrees on the bottom, and according to a certain theorem I forgot about, that means that the angles you're solving for equal 109 degrees.

X= 31 because 4 x 31 = 124 and then 124 - 15 equals 109

Answer and Step-by-step explanation:

We are told that l and k are parallel (which is shown with the || symbol).

Line n therefore, is a transversal (a line that intersects two parallel lines).

We are now told to find y and x.

Since we know the lines are parallel, we can use the vertical angles theorem to say that y is equal to 4x - 15.

With angle 71, we can say that the angle that is to the left of (4x - 15) is also 71. When these two are added together, they equal 180. So let's do that.

71 + 4x - 15 = 180

Subtract 71, add 15, then divide by 4.

4x - 15 = 109

4x = 124

x = 31

31 is equal to x.

Now, we plug it into the equation so that it will equal to y.

4(31) - 15 = y

124 - 15 = y

y = 109

109 is equal to y.

We can verify this by using the supplementary angles theorem for y and 71, when 71 is above y. When y and 71 is added together, they add up to 180. So, 180 - 71 is equal to 109, which is y.

31 is equal to x.

109 is equal to y.

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Does 10 × 3 4 have a value less than, greater than, or equal to 10?

Answers

Answer:

No or Less than

Step-by-step explanation:

No. 10*3/4 is not. 3/4 is less than 1, so it is not equal Your answer is less than.

Hope this helps Hit that crown !!!

Answer:

I think the answer is greater than

answer fast....... plzz guys

Answers

Answer:

a) eraser=5,2cm

b)glue stick =10cm

c)fork =18cm

d)thermometer =12,7cm

Step-by-step explanation:

all approximately

whats the average rate of change from x = - 3 to x = 5

Answers

Answer:

0

Step-by-step explanation:

Average rate of change from x = -3 to x = 5.

When x = -3, y = -1. That is f(-3) = -1

When x = 5, y = -1, That is f(5) = -1

Average rate of change = [tex] \frac{f(b) - f(a)}{b - a} [/tex]

Where,

[tex] a = -3, f(a) = -1 [/tex]

[tex] b = 5, f(b) = -1 [/tex]

Plug in the values into the equation:

[tex] = \frac{-1 - (-1)}{6 -(-3)} [/tex]

[tex] = \frac{0}{8}  [/tex]

[tex] = 0 [/tex]

Average rate of change = 0

what is the number of A

Answers

Answer:

45

Step-by-step explanation:

So we do 1 and 5 so if you have 9 then you do 9*5=45

To make paint Kim add 2 tablespoons of paint powder to one cup of water how much paint powder should Kim add to 4 1/2 cups of water

Answers

9 tablespoons of powder.

Hope that helps!

4. Solve this problem:

3(6 - 8)2 + 8+2

8

16

28

PLEASE HELP FAST!!
BRAINLY!!

Answers

Answer:

The answer is 16 because

Step-by-step explanation:

3(6 - 8)² + 8÷2 = 3(-2)² + 8÷2

        = 3 * 4 + 8÷2

        = 3 * 4 + 4

        = 12 + 4

        = 16

help!! 8th grade math problem

Answers

Answer:

Javier. (5.6 × x) + y = 26.96

Ellema. (13.2 × x) + y = 48.62

x = cost of gas

y = cost of car wash

I- JUST NEED THE ANSWERS TO THIS QUESTION

Answers

Answer:

Undefined

Step-by-step explanation:

GIVING 20 POINTS! PLEASE HELP!

Answers

Answer:

Option C

Step-by-step explanation:

x + 6) 3x⁴ + 20x³ + 14x² + 17x + 30 (3x³ + 2x²+ 2x + 5

         3x⁴ + 18x³  

                   2x³ + 14x²

                   2x³ + 12x²

                              2x² + 17x

                               2x² + 12x

                                       5x + 30

                                       5x + 30

                                            0

Therefore, quotient is (3x³ + 2x²+ 2x + 5).

Option C is the correct option.

which transformations could have occurred to map Δ ABC to Δ A"B"C"
A) a rotation and a dilation
B)a rotation and a reflection
C)a reflection and a dilation
D) a translation and a dilation

Answers

Answer: B not sure tho

Step-by-step explanation:

Answer:

C. a translation and a dilation

Step-by-step explanation:

Solve each equation. Check your solution.
a - 5 = -12

Answers

Answer:

A = -7

Step-by-step explanation:

Isolate the variable by adding 5 to each side. This becomes A = -7. To check your work plug -7 in for A.

-7 - 5 = -12

   -12 = -12

This is true so -7 is the correct answer.

Niall bought 234 inches of nylon cord for rock climbing. There are 36 inches in 1 yard. How many yards of cord did Niall buy?

Answers

Answer:

6.5 yards of cord were bought

Step-by-step explanation:

234/36=6.5

Carol walks 12km at xkm/h and then a further 6 km at (x-1) km/h the total time taken is 5 hours . Write an equation in terms of x and show that it simplifies to 5x squared -23x+12=0

Answers

Step-by-step explanation:

12/x + 6/(x-1) = 5

12(x-1) + 6(x) = 5(x)(x-1)

18x - 12 = 5x² - 5x

5x² - 23x + 12 = 0. (Shown)

A retail store makes k% profit on the selling price. What is the least integer value of k that will enable the store to make a profit of at least 30% of the cost of the item?

Answers

Answer: 10

Step-by-step explanation:

The store wants to make a 20% profit:

Multiply the cost of the toy by 1.20 ( cost plus 20%).

6.25 x 1.20 = $7.50

This means when the toy is sold at 25% off, it needs to be $7.50 to make the 20% profit.

When the item is 25% off, that means it would sell for 75% of the original price.

Now to find what the price needs to be before the 25% off divide the profit price by 75%

7.50 / 0.75 = $10

K = $10

plssss help due in 5 minutes

Answers

Answer:

-5 is the y intercept

Step-by-step explanation:

(0, -5). The y intercept is where the parabola crosses the y axis. As you can see, it crosses at (0,-5).

7) Wnte a linear function in
slope intercept form that
passes through the point (2, 3)
and has a slope of 4

Answers

Answer:
Explanation:
3 = 2(4) + b
3 = 8 + b
3-8 = b
-5 = b
y = 4x - 5
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