To Monitor the Number of Blemishes on a Polished Surface,a

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.