Stats Chapter 3 Individual Test

Front

What is the median of a data set?

Back

The median is the middle value when the data set is ordered from least to greatest. If there are two middle numbers, add them together and divide by two.

Front

How do you find the range of a data set?

Back

The range is found by subtracting the smallest value from the largest value in the data set.

Front

What is the best measure of center for a data set with outliers?

Back

The median is often the best measure of center when there are outliers, as it is not affected by extreme values.

Front

What should you do if there are two middle numbers when finding the median?

Back

Add the two middle numbers together and divide by two.

Front

How does adding a number smaller than the mean affect the mean?

Back

Adding a number smaller than the mean will decrease the mean.

Front

What is a frequency table?

Back

A frequency table is a way to organize data that shows how often each value occurs.

Front

What is the mode of a data set?

Back

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

Front

What is the difference between mean and median?

Back

The mean is the average of all values, while the median is the middle value when the data is ordered.

Front

How do you calculate the mean of a data set?

Back

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

Front

What is an outlier in a data set?

Back

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