Lesson 5
Calculating Measures of Center and Variability
Problem 1
The data set represents the number of errors on a typing test.
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- What is the median? Interpret this value in the situation.
- What is the IQR?
Solution
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Problem 2
The data set represents the heights, in centimeters, of ten model bridges made for an engineering competition.
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- What is the mean?
- What is the MAD?
Solution
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Problem 3
Describe the shape of the distribution shown in the dot plot. The dot plot displays the golf scores from a golf tournament.
Solution
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(From Unit 1, Lesson 4.)Problem 4
The dot plot shows the weight, in grams, of several different rocks. Select all the terms that describe the shape of the distribution.
bell-shaped
bimodal
skewed
symmetric
uniform
Solution
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(From Unit 1, Lesson 4.)Problem 5
The dot plot represents the distribution of wages earned during a one-week period by 12 college students.
- What is the mean? Interpret this value based on the situation.
- What is the median? Interpret this value based on the situation.
- Would a box plot of the same data have allowed you to find both the mean and the median?
Solution
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(From Unit 1, Lesson 3.)Problem 6
The box plot displays the temperature of saunas in degrees Fahrenheit. What is the median?
Solution
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(From Unit 1, Lesson 2.)