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The following data show the number of hours studied for an exam, x, and the grade received on the exam,

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The following data show the number of hours studied for an exam, x, and the grade received on the exam, y (y is measured in 10s; that is y = 8, means that the grade, rounded to the nearest 10 points, is 80).
The following data show the number of hours studied for

a. Draw a scatter diagram of the data.
b. Find the equation of the line of best fit and graph it on the scatter diagram. y = 8
c. Find the ordinates that correspond to x = 2, 3, 4, 5, 6, 7, and 8.
d. Find the five values of e that are associated with the points where x = 3 and x = 6
e. Find the variance se2 of all the points about the line of best fit.

Transcribed Image Text:

x 2 3 3 4 4 5 5 6 6 6 7 7 78 8 4 5 2 2 y 5 5 7 5 7 78 6 98 7 9 10 8 9

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a b Summary of data n 15 x 81 y 110 x 487 xy 625 y 842 SS x …View the full answer


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Related Book For  answer-question
Elementary Statistics

Elementary Statistics

ISBN: 9780538733502

11th Edition

Authors: Robert R. Johnson, Patricia J. Kuby

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Question Posted: August 28, 2015 04:01:40
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