A psychologist studied how long infants focused on a novel stimulus before losing attention. Infants from Culture A had attention scores ranging from 9 to 17 seconds with a mean of 14.4 seconds. Infants from Culture B had scores ranging from 2 to 25 seconds with a mean of 12.6 seconds and a higher variance.

1. 2. A psychologist studying how long (in seconds) infants in two different cultures focused on a
novel stimulus before losing attention obtained the scores below. Culture A 15 , 15 , 16 , 9 , 14 ,
14 , 17 , 17 , 16 , 13 Culture B 4 , 6 , 20 , 17 , 15 , 21 , 18 , 18 , 25 , 2 Based on the attention
duration scores of the infants, calculate the following for both groups. a. the mean b. median c.
mode d. variance e. standard deviation