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Chapter 2: Problem 10

Parking Tickets A group of 80 drivers in a large city is asked for the number of parking tickets they received in the previous month. What shape do you think this distribution will have? Explain.

Short Answer

Expert verified
The distribution of the number of parking tickets received by drivers is likely to be positively skewed.

Step by step solution

01

Understand the context

The context here is about 'parking tickets received by drivers'. We are given a group of 80 drivers in a large city and the number of parking tickets they all received in a month.
02

Analyze the type of data

The data that is collected is 'number of parking tickets', which is a type of count data. This means that there's a minimum at 0 (it's impossible to receive a negative number of tickets) and there's theoretically no maximum.
03

Consider common standards

In a big city, it's common to expect that majority of drivers do try to avoid parking tickets. So more drivers might receive 0 or few tickets, while fewer drivers receive a large number of tickets.
04

Determine likely distribution shape

Given that most drivers would try to avoid obtaining parking tickets and the data is count data limited by zero, more drivers would likely fall within the lower count range (0 or few tickets), and fewer drivers would be scattered over the higher range (many tickets). This describes a positively skewed or right-skewed distribution.
05

Summary

So, it can be stated that the distribution of number of parking tickets received by drivers in a large city is likely to be a positively skewed distribution.

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