The exam scores (out of 100 points) for all students taking an introductory statistics course are used to construct the following boxplot: If 5 points were added to each score, then standard deviation of the new scores would:
A)be increased by 5.
B)be increased by 25.
C)be decreased by 5.
D)remain unchanged.

Question

The exam scores (out of 100 points) for all students taking an introductory statistics course are used to construct the following boxplot:  If 5 points were added to each score, then standard deviation of the new scores would:
A)be increased by 5. 
B)be increased by 25. 
C)be decreased by 5. 
D)remain unchanged.

Quizplus · Accepted Answer

The Answer is D

The Exam Scores (Out of 100 Points) for All Students