Ch.9 Perrin Data Tools Test Bank Answers

Chapter 9 Data Tools

Multiple Choice

What type of data are defined as variables that are named and placed into groups, classification, or classes? (pg 131)

1. Ordinal Data
2. Categorical Data
3. Nominal Data
4. Ratio Data

What type of data has no particular order in response categories and codes are arbitrary? (pg 131)

1. Ordinal Data
2. Categorical Data
3. Nominal Data
4. Ratio Data

What type of data has equal space between each variable? (pg. 133)

1. Ordinal Data
2. Continuous Data
3. Nominal Data
4. Ratio Data

Which measure of central tendency score is used for interval and ratio data, but not for nominal or ordinal? (pg 138)

1. Mean
2. Median
3. Mode
4. Variance

Variance is defined as: (pg 144)

1. Standard deviation multiplied by two
2. Standard deviation divided by two
3. Square root of standard deviation
4. Square of the standard deviation

True or False

T/F Biological sex, and place of birth are examples of nominal data. (pg 132)

T/F Ordinal Data have an assumed order, or rank, as well as a consistent distance between variables. (pg 133)

T/F When there are an even number of scores, the median is calculated by adding the two middle scores together and dividing by the mean. (pg 141)

T/F If data is evenly distributed, graphics will show that the mean and median are the same. (pg 141)

T/F In a positive skew, the median is greater than the mean. (pg 134)

Fill in the Blank

The type of data that has even intervals and an absolute zero point is ________ data. (pg 134)

___________ are generally used to display nominal data, while __________ polygons display continuous data. (pg 138)

A _______ standard deviation show that the data are gathered tightly around the mean, whereas ________ standard deviation shows that the data are dispersed or spread out far from the mean. (pg 143)

Matching

Match the following measures of central tendency to their proper definition (pg 138-141)

Mean Defined as the average score

Median Defined as the middle value of the data

Mode Defined as the most frequently occurring score