Statistics Quiz 2

Name: _____________________________________

1. Augustus died in 14 AD. The year is an example of
   1. a ratio scale
   2. a interval scale
   3. a nominal measure
   4. an ordinal measure
2. Bar graph is appropriate for
   1. Nothing at all
   2. Nominal data
   3. Interval data
   4. Ratio data
3. A histogram is used with
   1. Ratio data
   2. Nominal data
   3. Regression analysis
   4. All of the above
4. Consider the data set: 8, 12, 24, 28. What is the mean?
   1. 18
   2. 16
   3. 22
   4. 24
5. What is the median?
   1. 12
   2. 18
   3. 22
   4. 24
6. What is the variance?
   1. 88
   2. 50.47
   3. 20
   4. 68
7. What is the standard deviation?
   1. 2.32
   2. 4.47
   3. 8.24
   4. 20.84
8. The measure of central tendency to use with nominal data is
   1. the median
   2. the deviants
   3. the mean
   4. the mode
9. We can use multiplication with
   1. any data we want
   2. ordinal data
   3. ratio data
   4. interval data
10. Consider the data set: 2, 5, 8, 11. What is the mean?
    1. 5.5
    2. 6.5
    3. 6
    4. 7
11. What is the variance?
    1. 8.94
    2. 15.43
    3. 3.35
    4. 11.25
12. What is the standard deviation?
    1. 2.32
    2. 4.47
    3. 8.23
    4. 3.35
13. To a mathematician, a probability is:
    1. something that can't be calculated
    2. an integer greater than one
    3. a personal belief
    4. a real number between 0 and 1
14. With ratio data, we typically measure variability as
    1. mean and median
    2. skew and kurtosis
    3. standard deviation and variance
    4. pie chart and histogram
15. In statistics the whole set we are interested in is called
    1. the population
    2. the sample
    3. the mean
    4. the range
16. With ordinal data we can measure variability using
    1. the variance
    2. the range
    3. a yardstick
    4. the standard deviation
17. If you have a data set with 21 scores, the median is the __ score.
    1. 21st
    2. 10th
    3. 1st
    4. 11th
18. Consider the data set: 10, 20, 40, 50. What is the mean?
    1. 30
    2. 24
    3. 34
    4. 35
19. What is the variance?
    1. 310.25
    2. 40
    3. 250
    4. 366.4
20. What is the standard deviation?
    1. 15.81
    2. 14.47
    3. 18.23
    4. 17.41