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# Histograms and Boxplots Practice Questions

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Updated on Oct 5, 2011

To review these concepts, go to Histograms and Boxplots Study Guide.

## Histograms and Boxplots Practice Questions

### Practice

Use the following information to answer practice problems 1 and 2. A shoe manufacturer selected a random sample of male students attending a large university. The smallest shoe that will comfortably fit each selected male was recorded. Only whole shoe sizes were considered; no half sizes were included. In this study, 2, 6, 14, 13, 11, and 4 students were found to have shoe sizes of 7, 8, 9, 10, 11, and 12, respectively.

2. Present the sample distribution in tabular form.
3. A bank wants to improve its customer service. Before deciding to hire more workers, the manager decides to get some information on the waiting times customers currently experience. During a week, 50 customers were randomly selected, and their waiting times recorded. The data are as follows: 18.5, 9.1, 3.1, 6.2, 1.3, 0.5, 4.2, 5.2, 0.0, 10.8, 5.8, 1.8, 1.5, 1.9, 0.4, 3.5, 8.5, 11.1, 0.3, 1.2, 4.4, 3.8, 5.8, 1.9, 3.6, 2.5, 4.5, 5.8, 1.5, 0.7, 0.8, 0.1, 9.7, 2.6, 0.8, 1.2, 2.9, 3.0, 3.2, 2.8, 10.9, 0.1, 5.9, 1.4, 0.3, 5.5, 4.8, 0.9, 1.6, and 2.2. Construct a tabular display of the data.
4. Create a relative frequency histogram for the number of partners accepted by female Gunnison's prairie dogs in the study area at the Pertrified Forest National Park during the seven-year study period presented earlier in the lesson.
5. Create a relative frequency histogram of the number of days international visitors stayed in New Zealand during 2004 based on the data given earlier in the lesson.
6. Create a relative frequency histogram of the waiting times of bank customers based on the data given earlier in the lesson.
7. Create a boxplot of the number of partners accepted by female Gunnison's prairie dogs in the study area of the Pertrified Forest National Park during the 7-year study period presented in Table 7.1.
8. Create a boxplot of the waiting times of bank customers based on the data given in practice problem 3 earlier in this lesson.

#### Solutions

1. Sample survey
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