The reaction time in seconds to a stop light for a group of adult men were found to be
0.74, 0.71, 0.41, 0.82, 0.74, 0.85, 0.99, 0.71, 0.57, 0.85, 0.57, 0.55 (mean = .709)

-What is the variance?
A)0.026
B)0.052
C)0.580
D)0.1613
E)0.0007

Question

The reaction time in seconds to a stop light for a group of adult men were found to be
0.74, 0.71, 0.41, 0.82, 0.74, 0.85, 0.99, 0.71, 0.57, 0.85, 0.57, 0.55 (mean = .709)

-What is the variance?
A)0.026
B)0.052
C)0.580
D)0.1613
E)0.0007

Quizplus · Accepted Answer

The variance is calculated by finding the average of the squared differences from the mean. The correct calculation gives a variance of approximately 0.026.

The Reaction Time in Seconds to a Stop Light for a Group