Quiz: Measures of Central Tendency

Use the data set below to answer questions 1 through 3.

2, 3, 3, 4, 6, 7, 8, 8, 8, 9, 10, 12

1. What is the mean?
a. 6.667
b. 7.5
c. 8
2. What is the median?
a. 7
b. 7.5
c. 8
3. What is the mode?
a. 3
b. 7
c. 8
4. A data set of 20 values has a sum of 468. What is the mean?
a. 23.4
b. 468
c. 9360
5. A data set of 30 values has a mean of 6.2. What is the sum of the values?
a. 0.207
b. 4.839
c. 186
6. A data set has a sum of 860 and a mean of 26.875. How many values are in the set?
a. 32
b. 40
c. 23112
7. A data set has values 1, 2, 4, 5, 6, 6, 7, 8, 9, 10, 12 and an unknown value, x. If the mean is 6.00, what is the value of x?
a. 1
b. 2
c. 6
8. Which of the following should be true for a distribution that is nearly symmetric?
a. The mean will be larger than the median.
b. The mean will be smaller than the median.
c. The mean will be close to the median.

Use the below table showing the weight, in ounces, and the frequencies for a sample of 35 cuts of steak for questions 9 through 11.

equation

9. What is the mean?
a. 13.343
b. 14
c. 467
10. What is the median?
a. 13
b. 13.343
c. 14
11. What is the mode?
a. 13
b. 13.343
c. 14

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