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    Coefficient of Determination

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    Coefficient of Correlation, Determination, & Test

    What is the relationship between the amount spent per week on food and the size of the family? Do larger families spend more on food? A sample of 10 families in the Chicago area revealed the following figures for family size and the amount spent of food per week. Family Size Amount Spent 3 $99 6 $104 5 $151 6 $129 6

    Correlation, Coefficient of Determination

    1. Given the following N's (where N is the number of pairs of observations) and obtained r's, indicate whether the result is significant at the .05 level: (a) N = 100, r = .22 (b) N = 100, r = .60 (c) N = 9, r = -.70 (d) N = 36, r = .23 (e) N = 100, r = -.19 2. Given the following data, what are the correlation and t