Calculating the mode

Stem and Leaf Plot

A graphical method for displaying quantitative data, showing the distribution of numbers through a stem (tens, hundreds, thousands) and leaves (ones digits).

Mean

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

Median

The middle number in a sorted list of numbers; if the list has an even number of values, the median is the average of the two middle numbers.

Mode

The number that occurs most frequently in a data set; there can be no mode or multiple modes.

To calculate the Mean, you must:

1) Add up all the numbers, 2) Divide by the number of data values.

Steps to find the Median:

1) Order the numbers from least to greatest, 2) Identify the middle number, averaging if there is an even number of values.