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vovangra [49]
3 years ago
10

In your own words, how do you create a residual plot that shows whether a linear model is an appropriate fit for the data?

Mathematics
2 answers:
tresset_1 [31]3 years ago
8 0

Step-by-step explanation:

We need to understand what residual plot is?

A residual plot is a graph that shows the residuals on the vertical axis and the independent variable on the horizontal axis.

Hence, there are 2 cases related to the relation between residual plot and a linear model:

1. If the points in a residual plot are randomly dispersed around the horizontal axis => the linear model is an appropriate fit for the data

2. If the points in a residual plot has a pattern => nonlinear model is more appropriate or the line have a bad fit with the set of the data.

Hope it will find you well.  

marissa [1.9K]3 years ago
4 0

Answer:

For this case we assume that we have n pairs of observations (x_1 ,y_1) ,...,(x_n, y_n). Ad we have a model in order to estimate the real values y_i with a model. And the residuals are given by:

e_i =y_i-\hat y_i

Then we find the residuals for the n observations.

After that we can create a plot of (e_i , x_i) , i =1,2,...,n.

Andd after create this graph if we see no pattern in the graph we can conclude that the linear pattern

Step-by-step explanation:

For this case we assume that we have n pairs of observations (x_1 ,y_1) ,...,(x_n, y_n). Ad we have a model in order to estimate the real values y_i with a model. And the residuals are given by:

e_i =y_i-\hat y_i

Then we find the residuals for the n observations.

After that we can create a plot of (e_i , x_i) , i =1,2,...,n.

Andd after create this graph if we see no pattern in the graph we can conclude that the linear pattern

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Three consecutive even integers have a sum of -126. What is the smallest integer ?
SSSSS [86.1K]

Answer:

-40, - 42 and -44

Step-by-step explanation:

The fastes way here is trying. Lets pick a number, intelligently, and then work on it.

We need three even integers that sum -126. These will be all negative numbers and as they are consecutive they will be very similar (for example, -33 and -35 and -37). Thus, lets start by 1/3 of -126, which is -42:

(-42)+ (-44) + (-46) = - 132, so -42 no.

Lets go a step back: -40

(-40) + (-42) + (-44) = -126

So, the integers are -40, -42 and -44

5 0
3 years ago
Two minor league baseball players got a total of 390 hits. Washington had 2 more hits than Sanchez. Find the number of hits for
Georgia [21]

9514 1404 393

Answer:

  • Washington had 196 hits
  • Sanchez had 194 hits

Step-by-step explanation:

Let s represent the number of hits Sanchez had. Then Washington had (s+2) hits, and their hit total was ...

  s +(s+2) = 390

  2s = 388 . . . . . . subtract 2

  s = 194 . . . . . . . . divide by 2

Sanchez had 194 hits; Washington had 196.

 

5 0
2 years ago
What is the end behavior of this function?<br> As X → + then y →<br> As X1-00 then y →
Degger [83]

Answer:

dot

Step-by-step explanation:

When used as a diacritic mark, the term dot is usually reserved for the interpunct, or to the glyphs 'combining dot above' and 'combining dot below' which may be combined with some letters of the extended Latin alphabets in use in Central European languages and Vietnamese

4 0
2 years ago
Which expression is equivalent to this expression? 3/4(4h – 6) A. 3h – 9/2 B. 4h + 9/2 C. 3h – 6 D. 4h + 6
djyliett [7]

Answer:

A. 3h – 9/2 B.

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Given f(x) = –2 – 1, find f(5).
sveta [45]
-2 - 1 = -3
The answer is -3.
3 0
3 years ago
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