Measures of Center and Variation (Grade 6)

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Measures of Center and Variation

1. 
Which of the following measures variation for a set of numbers?
  1. mode
  2. mean
  3. range
  4. median
2. 
Which mathematical operation is used to calculate the range of a data set?
  1. addition
  2. subtraction
  3. multiplication
  4. division
3. 
Look at the data set:

3, 4, 2, 9, 2, 3

Which number is an outlier of the data set?
  1. 2
  2. 3
  3. 4
  4. 9
4. 
What is the value of the interquartile range of the numbers below?

10, 12, 15, 17, 19, 20
  1. 7
  2. 10
  3. 12
  4. 16
5. 
Find the mean of 1, 5, and 6. What would happen to the mean if each of those numbers were increased by 3?
  1. the mean would stay the same
  2. the mean would increase by 3
  3. the mean would decrease by 3
  4. not enough information to determine
6. 
Use the data set to answer questions A - E.

Marcus records the following outdoor temperatures each hour from 9:00 a.m. to 3:00 p.m.:

[math]56^deg, 59^deg, 60^deg, 63^deg, 70^deg, 73^deg, 70^deg[/math]
A. 
What is the range of the temperatures?
  1. 17
  2. 63
  3. 64
  4. 70
B. 
What is the mean of the temperatures?
  1. 17
  2. 63
  3. 64
  4. 70
C. 
What is the median of the temperatures?
  1. 17
  2. 63
  3. 64
  4. 70
D. 
Which correctly shows how to calculate the range of the temperatures?
  1. [math]73^deg + 56^deg[/math]
  2. [math]73^deg - 56^deg[/math]
  3. [math]70^deg + 56^deg[/math]
  4. [math]70^deg - 56^deg[/math]
E. 
Marcus records one more temperature reading at 4:00 p.m. Which of the following temperatures would change the range of the data set?
  1. [math]56^deg[/math]
  2. [math]63^deg[/math]
  3. [math]70^deg[/math]
  4. [math]74^deg[/math]

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