Childhood obesity study. The Journal of Education and Human Development (Vol. 3, 2009) published a study of the eating patterns of families of overweight preschool children. The body mass index for each in a sample of 10 overweight children and their parents were determined. These data, saved in the BMI file, are reproduced in the table below.
Child | Parent |
17.10 | 24.62 |
17.15 | 24.70 |
17.20 | 25.70 |
17.24 | 25.80 |
17.25 | 26.20 |
17.30 | 26.30 |
17.32 | 26.60 |
17.40 | 26.80 |
17.60 | 27.20 |
17.80 | 27.35 |
Based on Seal, N., and Seal, J. “Eating patterns of the rural families of overweight preschool children: A pilot study.” Journal of Education and Human Development , Vol. 3, No. 1, 2009.
a. Demonstrate that the rank correlation between the BMI values in the sample is rs = 1 .
b. Interpret the result, part a.
c. Why should a researcher avoid concluding that there is a perfect linear relationship between BMI values in overweight children and their parents?
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