Measures of Center Worksheet
This worksheet focuses on understanding and calculating the mean, median, and mode of data sets for 8th-grade students.
Includes
Standards
Topics
Measures of Center
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Show all your work where applicable.
1. The is the sum of all values in a data set divided by the number of values.
2. The is the middle value in a data set when it is ordered from least to greatest.
3. The is the value that appears most often in a data set.
For the data set: 12, 15, 18, 12, 20, 16, 12
4. Calculate the mean.
5. Find the median.
6. Determine the mode.
7. Which measure of center is most affected by outliers?
Mean
Median
Mode
All are equally affected
8. A data set can have more than one mode.
True
False
9. Sarah scored 85, 92, 78, and 90 on her first four math tests. What score does she need on her fifth test to have an average (mean) of 88?
The bar graph below shows the number of books read by students in a reading challenge.
10. Based on the graph, what is the median number of books read?
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