Part 1) Prerequisite Skills: a.) Mean = average (add them all up and divide by the \# of pieces of data) b.) Median = Phiddfe number c.) Mode = the \# that appears the mosa d.) Range = biggest \# - smallest \#

It looks like you're outlining some basic statistical concepts. Let me clarify and correct the definitions for you: a.) **Mean**: The mean is the average of a set of numbers. To calculate it, you add all the numbers together and then divide by the total number of values. b.) **Median**: The median is the middle value in a set of numbers when they are arranged in order. If there is an even number of values, the median is the average of the two middle numbers. c.) **Mode**: The mode is the number that appears most frequently in a data set. A set of numbers may have one mode, more than one mode, or no mode at all. d.) **Range**: The range is the difference between the largest and smallest numbers in a data set. It is calculated by subtracting the smallest number from the largest number. If you have any specific questions or need examples related to these concepts, feel free to ask!