Generating...                               quiz01a_n18

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

x = c(72,67,73,64,75,64,70,69,63,75,67,73,71,72,5,6)

Data set, ctime.csv, can be downloaded.

  1. Find the IQR.

    $\displaystyle {{139}\over{2}}$ $\displaystyle {{11}\over{2}}$ $\displaystyle {{11}\over{4}}$ $\displaystyle {{33}\over{4}}$

  2. Are there outliers?

    Yes No

  3. Find the sample mean.

    69.5 61.62 68.5

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

    right-skewed symmetric left-skewed

  5. Find the third quartile.

    $\displaystyle {{147}\over{2}}$ $\displaystyle {{143}\over{2}}$ $\displaystyle {{289}\over{4}}$


Department of Mathematics
Last modified: 2025-09-14