Commute Times

Commute Times#

The US census collects data on time it takes Americans to commute to work, among many other variables. The histogram below shows the distribution of average commute times in 3,142 US counties in 2010. Also shown below is a spatial intensity map of the same data.

content/public/002.Summarizing Data/Topic Outcome/Q2.19a)_Commute_Times/figure1.png

Part 1#

Describe the numerical distribution and comment on whether or not a log transformation may be advisable for these data.

Answer Section#

Select all that apply

  • The Standard Deviation is about 5 min

  • The distribution is Uniform

  • The distribution has a median of about 18 min

  • The distribution is Right Skewed

  • The Standard deviation is about 10 min

  • The distribution is Left Skewed

Part 2#

For the numerical distribution and comment on whether or not a log transformation may be advisable for these data.

Answer Section#

  • Since the distribution is already unimodal and symmetric, a log transformation is not necessary

  • Since the distribution is already trimodal and left skewed, a log transformation is not necessary

  • Since the distribution is bimodal and right skewed, a log transformation would be beneficial to reduce the skewing of the data

  • Since the distribution is trimodal and left skewed, a log transformation would be beneficial to reduce the skewing of the data

  • Since the distribution is already bimodal and right skewed, a log transformation is not necessary

  • Since the distribution is already trimodal and right skewed, a log transformation is not necessary

Attribution#

Problem is from the OpenIntro Statistics textbook, licensed under the CC-BY 4.0 license.
Image representing the Creative Commons 4.0 BY license.