Generating...                               quiz01a_n17

The data below shows commuting times (in minutes) from a random sample of 20 employees who work at a company.

x = c(71,66,69,67,67,57,77,62,60,63,67,78,54,70,70,68,71,64,74,14)

Data set, ctime.csv, can be downloaded.

  1. Are there outliers?

    Yes No

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

    right-skewed symmetric left-skewed

  3. Find the sample median.

    64.45 67.0 66.5

  4. Find the IQR.

    $\displaystyle {{13}\over{4}}$ $\displaystyle {{17}\over{4}}$ 67 $\displaystyle {{15}\over{2}}$

  5. Find the third quartile.

    $\displaystyle {{281}\over{4}}$ $\displaystyle {{139}\over{2}}$ $\displaystyle {{143}\over{2}}$


Department of Mathematics
Last modified: 2026-03-24