The mean of a data set is 75 and one observation has the value of 65.What is the squared deviation of the observation,65,from the mean?
A)100
B)20
C)400
D)10

Question

Quizplus · Accepted Answer

The squared deviation of an observation from the mean is calculated by squaring the difference between the observation and the mean. Here, the difference between 65 and the mean 75 is 10. Squaring this difference gives 10^2 = 100.

The Mean of a Data Set Is 75 and One