The times, in seconds, for a 100-meter dash at a college track meet were 11.00, 10.76, 11.09, 11.50, 10.80, 11.43, 11.22, 11.15, 11.06, and 11.28.
a. Calculate the mean time for the 100-meter dash.
b. Calculate the median time for the 100-meter dash.
A) (a) Mean: 11.129 seconds; (b) median: 11.129 seconds
B) (a) Mean: 11.129 seconds; (b) median: 11.12 seconds
C) (a) Mean: 11.12 seconds; (b) median: 11.12 seconds
D) (a) Mean: 11.12 seconds; (b) median: 11.129 seconds
E) (a) Mean: 12.37 seconds; (b) median: 11.12 seconds

Question

The times, in seconds, for a 100-meter dash at a college track meet were 11.00, 10.76, 11.09, 11.50, 10.80, 11.43, 11.22, 11.15, 11.06, and 11.28. 
a. Calculate the mean time for the 100-meter dash.
b. Calculate the median time for the 100-meter dash.
A) (a) Mean: 11.129 seconds; (b) median: 11.129 seconds
B) (a) Mean: 11.129 seconds; (b) median: 11.12 seconds
C) (a) Mean: 11.12 seconds; (b) median: 11.12 seconds
D) (a) Mean: 11.12 seconds; (b) median: 11.129 seconds
E) (a) Mean: 12.37 seconds; (b) median: 11.12 seconds

Quizplus · Accepted Answer

To calculate the mean, add all the times and divide by the number of times: (11.00 + 10.76 + 11.09 + 11.50 + 10.80 + 11.43 + 11.22 + 11.15 + 11.06 + 11.28) / 10 = 111.29 / 10 = 11.129 seconds. For the median, order the times and find the middle value(s): 10.76, 10.80, 11.00, 11.06, 11.09, 11.15, 11.22, 11.28, 11.43, 11.50. The median is the average of the 5th and 6th values: (11.09 + 11.15) / 2 = 11.12 seconds.

The Times, in Seconds, for a 100-Meter Dash at a College