If a set of standardized test scores is normally distributed,having a mean of 50 and a standard deviation of 10,approximately 68 percent of the group members receive scores somewhere between

A) 50 and 60.
B) 45 and 55.
C) 40 and 60.
D) 35 and 65.

Standardized Test

A test administered and scored in a consistent manner, used to measure proficiency in a specific area of knowledge or skill.

Standard Deviation

Standard deviation is a statistical measure that quantifies the amount of variation or dispersion of a set of data values around the mean (average).

Normally Distributed

A data distribution pattern in which most measurements are concentrated around the mean, creating a symmetrical bell-shaped curve.