Vocabulary

Mean: is the average of the data set.

Median: It is the middle number of the data set when in order from the least to the greatest.

Mode: It is the number that occurred the most often.

Range: It is the difference between the highest and lowest values in the set.

Mean absolute deviation: is an indicator of the spread of the data, or how far each data value is from the mean.  The higher the mean absolute deviation, the further spread the data is from the mean.

Standard deviation: is a calculated value that shows how the data deviates from the mean of the data.

Concept

Answer questions based on the basic vocabulary of measures of variation (mean absolute deviation and standard deviation)

Rules

Steps to finding mean absolute deviation: ​

1. Find the mean.​
2. Find the absolute value of the differences between each value in the data set and the mean. ​
3. Find the average of the absolute values of the differences between each value in the data set and the mean.

Example

Drag the correct answer choice to complete the statement.

Solution

When finding the mean absolute deviation, the average distance between each data value and the mean, you must first find the mean. In order to take a data value and subtract the mean, you need the mean first.

Pre-requisite Skills

Find Mean, Median, Mode and, Range Using Graphs (6.2.9)

Find the Mean (5.8.5)

Find the Mode (5.8.6)

Find Median (5.8.7)

Find the Range (5.8.8)