1. 1: Analyzing Categorical Data



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Shape: We see from the graph that both distributions are right-skewed. For both states, the distance from the minimum to the median is much smaller than the distance from the median to the maximum.

  • Outliers: Earlier, we showed that the maximum travel time of 85 minutes is an outlier for the New York data. There are no outliers in the North Carolina sample.

  • Center: It appears that travel times to work are generally a bit longer in New York than in North Carolina. The median, both quartiles, and the maximum are all larger in New York.

  • Spread: Travel times are also more variable in New York, as shown by the lengths of the boxes (the IQR) and the range.


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