12.3 Measures of Dispersion Compute the​ mean, range, and standard deviation for the data items in each of the three samples.

Then describe one way in which the samples are alike and one way in which they are different.

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.

i would need to see the dot plot : )

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