Mean Median Mode Range Off 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

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

• Mean

• Mode

• Median

• Range

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

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 do you call the middle number in a set of numbers?

• Mean

• median

• Mode

• Range

Tags

5.17.a

Match the following terms with its correct definition.

• Add together, and divide by 2.

• What if there are 2 numbers in the middle?

• The difference between the highest and lowest values in a set of numbers

• Mode

• The sum of all values divided by the total number of values

• Mean or Average

• The middle value in a list of numbers when arranged in ascending order

• Median

• The number that appears most frequently in a set of numbers

• Range

Teresa interviewed each teacher at her school to find out how long they had been teaching. She organized her results with a stem-and-leaf plot. According to her data, which statement is true?

• There is no mode.

• No teacher has taught for fewer than 10 years.

• The median is 18.

• The spread of the data set is 29.

What is the range of the data?

• 12

• 5.6

• 5

• 10

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 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