Univariate Data Review

For which of the following would it be inappropriate to display the data with a single pie chart?

• The distribution of car colors for vehicles purchased in the last month.

• The distribution of unemployment percentages for each of the 50 states.

• The distribution of favorite sport for a sample of 30 middle school students.

• The distribution of shoe type worn by shoppers at a local mall.

• The distribution of presidential candidate preference for voters in a state.

The bar graph shows the distribution of favorite subject for a sample of 1000 students. What is the most serious problem with the graph?

• The subjects aren't listed in the correct order.

• This distribution should be displayed with a pie chart.

• The vertical axis should show the percent of students.

• The vertical axis should start at 0 rather than 100.

• The foreign language bar should be broken up by language.

Here are the amounts of money (cents) in coins carried by 10 students in a statistics class: 50, 35, 0, 46, 86, 0, 5, 47, 23, 65. To make a stemplot of these data, you would use stems

• 0, 2, 3, 4, 6, 8

• 0, 1, 2, 3, 4, 5, 6, 7, 8

• 0, 3, 5, 6, 7

• 00, 10, 20, 30, 40, 50, 60, 70, 80, 90

• None of these

The histogram shows the heights of 300 randomly selected high school students. Which of the following is the best description of the shape of the distribution of heights?

• Unimodal and fairly symmetric

• Bimodal and roughly symmetric

• Multi-modal (multi-peaks) and fairly symmetric

• Skewed Left

• Skewed Right

You look at real estate ads for houses in Naples, Florida. there are many houses ranging from $200,000 to $500,000 in price. The few houses on the water are priced up to 15 million. The distribution of house prices will be

• Skewed Left

• Fairly Symmetric

• Skewed Right

• Unimodal

• Approximately Uniform

In the histogram, the mean is _______ _______ than the median

In the histogram, the mean is _________ the median.

The stemplot displays data on the amount spent by 50 shoppers at a grocery store. Note that the values have been rounded to the nearest dollar.

_____ is the smallest amount spent by any of the shoppers.

What is the center of the distribution?

• $28

• $50

• $90

• $36

What is the shape of this distribution?

• fairly symmetric

• Skewed Left

• Skewed Right

• Uniform