# Question

(a) Estimate whether the following pairs of scores for X and Y reflect a positive relationship, a negative relationship, or no relationship. Hint: Note any tendency for pairs of X and Y scores to occupy similar or dissimilar relative locations.

X Y

64..... 66

40..... 79

30..... 98

71..... 65

55..... 76

31..... 83

61..... 68

42..... 80

57..... 72

(b) Construct a scatterplot for X and Y. Verify that the scatterplot does not describe a pronounced curvilinear trend.

(c) Calculate r using the computation formula.

X Y

64..... 66

40..... 79

30..... 98

71..... 65

55..... 76

31..... 83

61..... 68

42..... 80

57..... 72

(b) Construct a scatterplot for X and Y. Verify that the scatterplot does not describe a pronounced curvilinear trend.

(c) Calculate r using the computation formula.

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