Best Measure of Center and Spread

Front

What is the mode in a data set?

Back

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

Front

What does the mean represent in a data set?

Back

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

Front

What is the median in a data set?

Back

The median is the middle value when the numbers are arranged in order. If there are two middle numbers, the median is the average of those two.

Front

What is standard deviation?

Back

Standard deviation is a measure of how spread out the numbers in a data set are. A low standard deviation means the numbers are close to the mean, while a high standard deviation means they are more spread out.

Front

How do you find the mean of a data set?

Back

Add all the numbers together and divide by the total number of values.

Front

What is a measure of center?

Back

A measure of center is a value that represents the center of a data set, such as the mean, median, or mode.

Front

What is a measure of spread?

Back

A measure of spread indicates how much the values in a data set vary, such as range or standard deviation.

Front

If a data set has two middle numbers, how do you find the median?

Back

Add the two middle numbers together and divide by two.

Front

What is the range of a data set?

Back

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

Front

When is the mean not a good measure of center?

Back

The mean is not a good measure of center when the data set has outliers or is skewed.