A student tracks how many minutes he practices his guitar for five days this week....
Check the final answer first, then review the worked steps.
Problem
A student tracks how many minutes he practices his guitar for five days this week. Find the standard deviation of this population data set. If the answer is a decimal, round it to the nearest tenth.
Answer
6.6
Step-by-step solution
Calculate the mean, then the variance, and finally the standard deviation of the given data set: (19+27+35+26+33)/5 = 28. The variance is the average of the squared differences from the mean. The standard deviation is the square root of the variance.