# Hapter 2: Research Methods in I/O Psychology

After reading Chapter 2, viewing the lesson, and reviewing the PowerPoint slides with note pages; complete the following descriptive statistics problems. (2 points)

1. Compute basic descriptive statistics for the following set of data:

3 4 8 8 11 14

A. What is N?

B. What is the mean?

C. What is the median?

D. What is the mode?

2. Find the descriptive statistics for the distribution of data below:

88 86 85 80 80 77 75 71 65 60 58

A. What is N?

B. What is the mean?

C. What is the median?

D. What is the mode?

E. What is the range?

3. In normal distributions of data, the mean, median, and mode will be equal.

A. Is the set of data in question one normal?

B. Is the set of data in question two normal?

4. Calculate the descriptive statistics for the following set of data:

7 24 27 18 20 10 27 16 25 12 16 14

A. What is the mean?

B. What is the median?

C. What is the range?

D. How many modes are in the data set above?

E. A set of data with this number of modes should be referred to as?