Finding Average (Mean)
This worksheet helps 8th-grade students practice calculating the mean (average) of various data sets, including word problems and data from bar graphs.
Includes
Standards
Topics
Finding Average (Mean)
Name:
Date:
Score:
Read each question carefully and calculate the average (mean) for each set of numbers. Show your work where applicable.
1. Find the mean of the following set of numbers: 12, 18, 15, 20, 10.
2. Calculate the average of these test scores: 85, 92, 78, 95, 88, 90.
3. To find the mean, you need to first all the numbers in the set and then by the of numbers in the set.
4. If the sum of 5 numbers is 75, then their average is .
5. Sarah recorded the number of books she read each month for six months: 4, 7, 3, 5, 8, 3. What is the average number of books she read per month?
6. A baker sold 120 cupcakes on Monday, 150 on Tuesday, 130 on Wednesday, and 160 on Thursday. What is the average number of cupcakes sold per day for these four days?
7. The bar graph below shows the number of hours students spent studying for a math test. Calculate the average number of hours spent studying.
8. The mean is always one of the numbers in the data set.
True
False
9. Adding a very large number to a data set will significantly increase its mean.
True
False
10. The average height of 4 friends is 150 cm. If a fifth friend who is 160 cm tall joins the group, what will be the new average height of the five friends?
Related Worksheets
Grade 8 Data Visualization Worksheet
A worksheet for 8th-grade students covering various data visualization techniques including bar graphs, line plots, and pie charts.
Grade 8 Frequency Tables Worksheet
This worksheet helps 8th-grade students practice creating and interpreting frequency tables from given data sets.
Counting Principle Worksheet
This worksheet focuses on the fundamental counting principle with real-world scenarios for Grade 8 students.
Grade 8 Mean Absolute Deviation Worksheet
This worksheet helps 8th-grade students understand and calculate the Mean Absolute Deviation (MAD) of data sets, a measure of variability.
Grade 8 Math: Center and Spread
A worksheet for 8th-grade students covering measures of center (mean, median, mode) and spread (range, interquartile range) with real-world data sets.
Grade 8 Tree Diagrams Worksheet
This worksheet helps 8th-grade students understand and construct tree diagrams to visualize and calculate probabilities of sequential events.
Experimental Probability Worksheet
A Grade 8 math worksheet focusing on experimental probability with various question types to reinforce understanding.
Five Number Summary Worksheet
A Grade 8 math worksheet covering the five number summary: minimum, first quartile, median, third quartile, and maximum.