Name: _____________________________________ Date: ______________
Exit Ticket
Summative Assessment: MAFS.6.SP.1.3 Recognize that a measure of center for a numerical data set summarizes all of its values with
a single number, while a measure of variation describes how its values vary with a single number.
Instructions: Calculate the mean and median for the following GPA data for 6 students: (Round to the
nearest hundredth)
1.6
1.7
1.8
1.9
2.0
2.0
1) Mean: _________________
2) Median: _________________
3) What is the lower extreme (minimum)? _________________
4) What is the upper extreme (maximum)? _________________
5) What is the range? _________________
Instructions: Using the GPAs listed above, change the 1.6 GPA to 3.0 GPA.
6) Calculate the mean (round to the nearest hundredth): ___________________________
7) What is the median? _________________
8) What is the lower extreme? _________________
9) What is the upper extreme? _________________
10) What is the range? _________________
11) Which of the following measures of central tendency changed when the 3.0 GPA replaced the 2.0
GPA? Circle all that apply.
Median
Mean
Mode
12) Which measure of variation accounts for the change? _______________________
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Answer Key:
1. 1.83
2. 1.85
3. 1.6
4. 2.0
5. 0.4
6. 2.07
7. 1.95
8. 1.7
9. 3.0
10. 1.3
11. Mean and median
12. Range
(c) Copyright. All rights reserved. www.cpalms.org