Education.com

# Data Organization and Interpretation for Praxis II ParaPro Test Prep Study Guide (page 4)

By LearningExpress Editors
LearningExpress, LLC

### Median

Another center of data is the median, which is the number in the center, if you arrange all the data in ascending or descending order. To find the median of a set of numbers, arrange the numbers in ascending or descending order and find the middle value. If the set contains an odd number of elements, then choose the middle value. If the set contains an even number of elements, simply average the two middle values.

Example

Find the median of the number set: 1, 5, 4, 7, 2.

First arrange the set in order—1, 2, 4, 5, 7—and then find the middle value. Because there are five values, the middle value is the third one: 4. The median is 4.

Example

Find the median of the number set: 1, 6, 3, 7, 2, 8.

First arrange the set in order—1, 2, 3, 6, 7, 8—and then find the middle values, 3 and 6.

Find the average of the numbers 3 and 6:

= 4.5. The median is 4.5.

### Mode

The mode of a set of numbers is the number that appears the greatest number of times.

Example

Find the mode for the following data set: 1, 2, 5, 9, 4, 2, 9, 6, 9, 7.

For the number set 1, 2, 5, 9, 4, 2, 9, 6, 9, 7, the number 9 is the mode, because it appears the most frequently.

The practice quiz for this study guide can be found at:

Math for Praxis II ParaPro Test Prep Practice Problems

View Full Article

## Add your own comment

### Ask a Question

Have questions about this article or topic? Ask
150 Characters allowed

### Related Questions

#### Q:

See More Questions

### Today on Education.com

#### WORKBOOKS

May Workbooks are Here!

#### WE'VE GOT A GREAT ROUND-UP OF ACTIVITIES PERFECT FOR LONG WEEKENDS, STAYCATIONS, VACATIONS ... OR JUST SOME GOOD OLD-FASHIONED FUN!

Get Outside! 10 Playful Activities