Dot Plots, mean, median

Front

What is the median?

Back

The middle number in a sorted list of numbers.

Front

What is the MEDIAN of this data: 40, 90, 95, 100?

Back

95

Front

When finding the median, what do you do if there are two middle numbers?

Back

Add them together and divide by 2.

Front

In order to find the median, the data must be sorted from least to greatest first. True or False?

Back

True.

Front

Find the Median: 2, 7, 9, 12, 15, 17, 20

Back

12.

Front

What is a dot plot?

Back

A graphical display of data using dots to represent the frequency of values.

Front

How do you create a dot plot?

Back

Place a dot above a number on a number line for each data point.

Front

What does the mean represent in a data set?

Back

The average of all the numbers in the data set.

Front

How do you calculate the mean?

Back

Add all the numbers together and divide by the total count of numbers.

Front

What is the difference between mean and median?

Back

Mean is the average, while median is the middle value when data is sorted.