A long arm span can be advantageous in sports and, if the ratio of arm span to h

Question

A long arm span can be advantageous in sports and, if the ratio of arm span to height is too large, there may be health problems The following data shows height and arm span (wing span) of 20 individuals Subject Height Arm sparn 142 cm 148 cmn 152 cm 150 cm 141 cm 142 cn 149 cmn 151 cm 147 cn 152 cm 150 cm 152 cm 148 cm 152 cm 144 cm 148 cn 150 cm 138 cm 145 cm 142 cn 138 cm 144 cm 148 cmm 145 cm 136 cm 139 cm 144 cm 145 cm 144 cm 148 cm 147 cm 141 cm 144 cm 148 cmm 140 cm 143 cm 146 cm 134 cm 142 cm 138 cm 2 3 5 6 7 8 9 12 13 14 15 16 17 18 19 20 of the least squares and intercept a - Use your calculator to find the slope b - regression line for predicting arm span from height: arm span- a + b(height). Enter the height and arm span measurements exactly as given and give your answers to two decimal places. (For example, give 0.47 as your answer, if you compute 0.468.)

Explanation / Answer

Question 1:
Slope b = 0.87, Intercept a = 14.50.

Question 5:
Proportion = r2 = (-0.7882) = 0.62.

Question 6:
Slope of the regression line = -0.6282
Intercept of the regression line = 85.7204
Correlation coefficient = -0.7134

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