21. How Long Is It? How good are you at estimating? To test a subjects ability to...

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21. How Long Is It? How good are you at estimating?

To test a subject’s ability to estimate sizes, he was shown 10 different objects and asked to estimate their length or diameter. The object was then measured, and the results were recorded in the table below.

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a. Find the least-squares regression line for predicting the actual measurement as a function of the estimated measurement.

b. Plot the points and the fitted line. Does the assumption of a linear relationship appear to be reasonable?

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Introduction To Probability And Statistics

ISBN: 9780357114469

15th Edition

Authors: William Mendenhall Iii , Robert Beaver , Barbara Beaver

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Question Posted: Sep 20, 2024 05:02 AM

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21. How Long Is It? How good are you at estimating? To test a subjects ability to...

Question:

Estimated Actual Object (centimeters) (centimeters) Pencil 17.7 15.2 Dinner plate 24.1 26.0 Book 1 19.0 17.1 Cell phone 10.1 10.7 Photograph 36.8 40.0 Toy 9.5 12.7 Belt 106.6 105.4 Clothespin 6.9 9.5 Book 2 25.4 23.4 Calculator 8.8 12.0

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Introduction To Probability And Statistics

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