The document defines and provides examples for calculating the mean, median, mode, and range of a data set. It explains that the mean is the average found by adding all values and dividing by the number of values. The median is the middle value when the data is arranged from lowest to highest. The mode is the value that appears most frequently. The range is the difference between the highest and lowest values. It provides sample data sets and asks the reader to find the mean, median, mode, and range.

1. Mean, Median, Mode, and Range

2. Mean You might think of this as the “average” of your data set. 14, 25, 32, 9, 25 -Add the data -Take the sum of the data and divide it by the number of data Ex. 105 / 5 = 21

3. Median -Think “middle” -Take the data set and arrange the numbers from least to greatest. 14, 25, 32, 9, 25 9, 14, 25, 25, 32 -Take a number from the far left, far right, far left, and so on until you arrive with the number in the middle. 25 (If you have 2 numbers left, add them and divide by 2)

4. Mode -The number than appears the most often. 14, 25, 32, 9, 25 25 (There can be more than one mode however there is no mode if the numbers appear equally often)

5. Range -The range is the difference between the greatest value and the least value. 14, 25, 32, 9, 25 32 – 9 = 23 Range

6. Let’s try together!! 7, 26, 101, 52, 26 84, 51, 99, 48, 2, 36 Find the mean, median, mode, and range of the data sets (you may use a calculator).

7. Connection to the World What have you been hearing about gasoline prices? How can we use what we have learned in relation to gasoline prices?