In this problem, we use Table 4-6 to explore the significance of r based on different sample
Question:
(a) Is a sample correlation coefficient r = 0.820 significant at the α = 0.01 level based on a sample size of n = 7 data pairs? What about n = 9 data pairs?
(b) Is a sample correlation coefficient r = 0.40 significant at the α = 0.05 level based on a sample size of n = 20 data pairs? What about n = 27 data pairs?
(c) Is it true that in order to be significant, an r value must be larger than 0.90? larger than 0.70? larger than 0.50? What does sample size have to do with the significance of r? Explain.
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Related Book For
Understanding Basic Statistics
ISBN: 9781111827021
6th Edition
Authors: Charles Henry Brase, Corrinne Pellillo Brase
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