Choosing the Right Measure of Center

Front

What is the mean in a data set?

Back

The mean is the average of all the numbers in a data set, calculated by adding all the values together and dividing by the number of values.

Front

When is the mean the best measure of center to use?

Back

The mean is the best measure of center when the data set is symmetrical and has no outliers.

Front

What is the median in a data set?

Back

The median is the middle value in a data set when the numbers are arranged in order. If there is an even number of values, the median is the average of the two middle numbers.

Front

When should you use the median as a measure of center?

Back

The median should be used when the data set has outliers or is skewed, as it is not affected by extreme values.

Front

What is the mode in a data set?

Back

The mode is the value that appears most frequently in a data set.

Front

When is the mode the most useful measure of center?

Back

The mode is most useful for categorical data, where we want to know the most common category.

Front

What is the range in a data set?

Back

The range is the difference between the highest and lowest values in a data set.

Front

How do you calculate the mean of a data set?

Back

To calculate the mean, add all the numbers together and divide by the total number of values.

Front

What is an outlier?

Back

An outlier is a value in a data set that is significantly higher or lower than the other values.

Front

Why is it important to identify outliers?

Back

Identifying outliers is important because they can skew the mean and misrepresent the data.