Question

The following data represent the amount of time​ (in minutes) a random sample of eight students took to complete the online potion of an exam in a particular statistics course. Compute the​ mean, median, and mode time. 64.7​, 79.9​, 89.7​, 108.2​, 128.4​, 101.6​, 94.7​, 119.1 Compute the mean exam time. Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice. A. The mean exam time is nothing. ​(Round to two decimal places as​ needed.) B. The mean does not exist. Compute the median exam time. Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice. A. The median exam time is nothing ​(Round to two decimal places as​ needed.) B. The median does not exist. Compute the mode exam time. Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice. A. The mode is nothing. ​(Round to two decimal places as needed. Use a comma to separate answers as​ needed.) B. The mode does not exist

Answer 1

The mean exam time

To find the median exam time,

sorting the values in ascending order of magnitude, we get

Number of observations = 8

So, median will be the average of 8/2 =4 th and (8/2) +1 = 5th observations.

4^th observation = 94.7

5^th observation = 101.6

Median

To find mode,

there are no observations repeating more than once, so there is no model

ans-> B. The mode does not exist