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

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