If the data for a variable is normally distributed, then:
A) roughly 50% of the observations for the variable should fall within one standard deviation on either side of the mean
B) none of the observations for the variable should fall within one standard deviation on either side of the mean
C) roughly 68% of the observations for the variable should fall within one standard deviation on either side of the mean
D) 100% of the observations for the variable should fall within one standard deviation on either side of the mean

Question

Quizplus · Accepted Answer

In a normal distribution, approximately 68% of the data falls within one standard deviation of the mean.

If the Data for a Variable Is Normally Distributed, Then