Reading Data Table and Graphs

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

The line plot shows the number of pairs of women's shoes sold by size in one week. Each "x" represents one pair of shoes.

What is the median size of the shoes sold?

What is a valid inference you can make based off of this data?

• The data is symmetrical

• No inference can be made

• People spend more time exercising than playing video games

• People spend more time playing video games than exercising

Crystal surveyed 16 of her friends to determine their favorite free time activities. 50% said watching TV, 25% said reading, 10% said playing sports, and the rest said going to the movies. Which circle graph could best represent Crystal's data?

• 
• 
• 
• 

Since the data is symmetrical, which measure of center is the best use?

• Mean

• Mode

• Median

• Range

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.

Look at the Bar Graph "Student Grades". Which grade did the smallest number of students get?

• A

• B

• C

• D

Look at the Bar Graph, "Student Grades". What grade did the most students get?

• A

• B

• C

• D

How many more people like red than purple?

• 100

• 10

• 2

• 5