Health and nutrition researchers have studied the possible association between
Health and nutrition researchers have studied the possible association between family income and the height of children in the family at various growth stages. (See, for example, The Relationship of Household Income to a Range of Health Measures , D. Der, S. MacIntyre, G. Ford, K. Hunt and P. West, The European Journal of Public Health , Volume 9, Issue 4, pp. 271–77.) Suppose numbers from a recent study of five families showed the following results:
Annual Family Income ($000) Height of 10-year-old Male Child (inches)
56.4.......................... 46.1
22.7.......................... 43.6
34.9.......................... 44.3
72.3.......................... 46.0
58.2.......................... 46.5
Show the scatter diagram for the data. Compute and interpret the covariance.
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