To Monitor the Number of Blemishes on a Polished Surface

Multiple Choice

To monitor the number of blemishes on a polished surface a company randomly selects 10 units of output from its process and counts the number of blemishes on each unit.The sample results are shown below

Given the sample information above,the standard deviation of the number of defects for this process would be

A) 16
B) 10
C) 4
D) 0