When the sample size n is greater than 30,the Spearman rank correlation coefficient r_s is approximately normally distributed with: A)mean 0 and standard deviation 1. B)mean 1 and standard deviation . C)mean 0 and standard deviation . D)mean 1 and standard deviation )

Question

Quizplus · Accepted Answer

When the sample size is greater than 30, the distribution of r_s is approximately normal with a mean of 0 and a standard deviation of 1/sqrt(n-3). Therefore, choice C is the correct answer, as it states that the standard deviation is approximately 1 (since n is greater than 30, we can assume that the difference between n and 3 is not significant, making the denominator of the standard deviation approximately equal to sqrt(n)). The other choices are incorrect because they either state the wrong mean or the wrong standard deviation.

When the Sample Size N Is Greater Than 30,the Spearman