Question
How does the average height for boys change as boys get older? According to the Physician's Handbook , the average heights at different ages are
How does the average height for boys change as boys get older? According to the Physician's Handbook, the average heights at different ages are as follows:
Age (Years) | 0.5 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
Height (Inches) | 26 | 29 | 33 | 36 | 39 | 42 | 45 | 47 | 50 | 52 | 54 | 56 | 58 | 60 | 62 |
Answer the following:
(a) Write the simple linear regression equation for the line that best describes this data. (b) What is the value of r2? (c)Select the assumptions that are violated. Select one or more: a. Linearity b. Independence c. Normality d. Equal Variance(d)What is the expected average height of 8 year old boys, using the regression equation? Select one: a. 48.42 inches b. 45.14 to 51.70 inches c. The results are not reliable due to low r value. d. Results are not reliable due to low p-value. e. Invalid assumptions make estimates incorrect.
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