Analyzing Data on a Graph

The box-and-whisker plots summarize the hourly wages of employees at two different fitness clubs. Based on the box-and-whisker plots, which statement must be valid?

• Fitness Plus has a smaller spread in the upper 25% of the hourly wages than The Fitness Center

• Fitness Plus has a smaller spread in the middle 50% of the hourly wages than The Fitness Center

• The Fitness Center has more employees earning an hourly wage of $17 than Fitness Plus

• The Fitness Center has a larger range in employee hourly wages than Fitness Plus

What could you infer about the variability of these two data sets?

• The boys would be greater than then girls

• They would be about the same

• The girls would be greater than the boys

• There is no comparison

A company makes four different computer models: XL10, XL50, XL200, and XL900. The company surveyed customers who bought these computers last year to determine the satisfaction/dissatisfaction rate among purchasers. The results of the survey are shown in the graph provided.

Which conclusion is supported by the graph?

• The purchasers of the XL50 had the highest rate of satisfaction.

• The purchasers of the XL900 had the highest rate of satisfaction.

• The purchasers of the XL10 had the highest rate of dissatisfaction.

• The purchasers of the XL200 had the highest rate of dissatisfaction.

What is the difference between the percent of time Doug spends playing sports and the percent of time Fred spends playing sports?

• 14%

• 10%

• 4%

• 1%

A class has taken a survey about their favorite treats.

Which bar graph best represents the data from this survey?

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Which bar graph displays the same information as the table provided?

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The box plot shows the prices of different bicycles in a store.

What is the median price of a bicycle at the store?

• $225

• $300

• $350

• $450

• $500

What is the range of the data?

• 12

• 5.6

• 5

• 10

Mrs. Schultz gave her students a math test at the beginning of the school year and recorded the grades for each of her 20 students. She gave the same quiz at the end of the year and again recorded the grades for each student. The grades for both quizzes are displayed. How many points higher was the average (mean) score for the second test than the first test?

• 13

• 14

• 15

• 16

Mrs. Glick displayed the line plot shown to her students. Four students then analyzed the dot plot. Each student's response is shown in the provided table.

Who CORRECTLY analyzed the data in Mrs. Glick's dot plot?

• Blythe

• Cliff

• Donna

• Earnest