Multiple choice

The mean of a data set is 35. If 21 is added to the each observation of set, how does the mean get affected?

  1. Increase

  2. Decrease

  3. Does not change

  4. Insufficient information

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Old mean = 35 New mean = 35 + 21 = 56 So, the mean increases.