The data below shows commuting times (in minutes) from a random sample of 16 employees who work at a company.

x = c(33,39,31,42,38,33,29,25,34,38,30,22,25,37,30,25)

Data set, ctime.csv, can be downloaded.

  1. Find the description which best fits the shape of distribution.

    symmetric left-skewed right-skewed

  2. Find the sample mean.

    31.93 30.5 32.0

  3. Find the IQR.

    $\displaystyle {{37}\over{4}}$ 32 $\displaystyle {{21}\over{4}}$ 4

  4. Find the sample median.

    30.5 31.93 32.0

  5. Are there outliers?

    Yes No


Department of Mathematics
Last modified: 2026-09-08