The following data on x 5 score on a measure of test, Ask an Expert

Economics

The following data on x 5 score on a measure of test anxiety and y 5 exam score for a sample of n 5 9 students are consistent with summary quantities given in the paper "Effects of Humor on Test Anxiety and Per- formance" (Psychological Reports [1999]: 1203-1212):

x 23 14 14 0 17 20 20 15 21

y 43 59 48 77 50 52 46 51 51

Higher values for x indicate higher levels of anxiety.

10 75.0

12 83.6

a. Construct a scatterplot of y = percentage who said they were more likely to purchase and x = grade. Does there appear to be a linear relationship between x and y?

b. Find the equation of the least-squares line.

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Microeconomics, Economics

Category:- Microeconomics
Reference No.:- M91724309

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