Author Question: The sum of deviations of the individual data elements from their mean is _____. a. always greater ... (Read 32 times)

ahriuashd · **on:** Jun 24, 2018

The sum of deviations of the individual data elements from their mean is _____.
a. always greater than zero
b. always less than zero
c. sometimes greater than and sometimes less than zero, depending on the data elements
d. always equal to zero

Question 2

The sample size needed to provide a margin of error of 2 or less with a .95 probability when the population standard deviation equals 11 is
a. 10.
b. 11.
c. 116.
d. 117.