15 Do Creative People Make Better Teachers Ten Teachers At A Large University Were Given A Creativity Test In Which Sc 1 (60.33 KiB) Viewed 27 times
15 Do Creative People Make Better Teachers Ten Teachers At A Large University Were Given A Creativity Test In Which Sc 2 (16.01 KiB) Viewed 27 times
15. Do creative people make better teachers? Ten teachers at a large university were given a creativity test in which scores range from 0 to 20, with higher scores indicating greater creativity. They were evaluated regarding teaching performance by students and peers. A score of 100 indicates an average performance, and larger scores indicate better performance. The creativity scores and teaching performance scores are given in the following table. 101 Creativity Score Performance Score 9 93 7 89 8 95 13 10 102 10 96 9 95 18 111 10 103 14 107 Let a represent the creativity score and let y represent the performance score. y (a) Create a scatterplot of the data using Excel or a graphing calculator. Does the relationship between x and y appear to be linear? If so, calculate the correlation coefficient and describe the strength and direction of their relationship. (b) What is the equation for the least-squares regression line between creativity score and performance score?
(c) Use the least-squares regression line in part (b) to predict the performance score if the creativity score is 18. (d) When you calculated your answer in part (d), were you extrapolating? Explain your reasoning (e) What percent of the variation in performance scores is explained by the linear regression? forintinny for the family
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