Mean, median, and mode

The first instance of  is under the Probability and statistics Math Mission. This exercise introduces and practices the calculation of the measurements of center.

Types of Problems
There are three types of problems in this exercise:


 * 1) Find the mean: This problem provides a collection of data points and asks the student to calculate the arithmetic mean of the data set.Mmm1.png
 * 2) Find the median: This problem provides a collection of data and asks the student to calculate the median of the data set.Mmm2.png
 * 3) Find the mode: This problem provides a set of numbers and asks the student to find the mode of the data set.Mmm3.png

Strategies
This exercise is easy to get accuracy badges because mean, median and mode are easy to find when you know what they are. The speed badges are medium because mean and mode are fast but median can take a few seconds to order.
 * 1) The arithmetic mean is what many people think of when they hear "average." Add them up, and divide by how many there are.
 * 2) The median is the number in the middle of an ordered data set. Make sure the data is in order before you try to get the middle number.
 * 3) Most of the data sets for median seemed to have an odd number of elements. If there are an even number, just take the average of the middle two values.
 * 4) The mode is the 'fashionable,' or most common data point.