140 likes | 146 Views
Discover the basics of mean, median, mode, and range in statistics. Learn how to calculate these measures and understand their importance in data analysis. Practice exercises included.
E N D
Statistics Part One: Recap of the Easy Stuff
Learning Objectives • To review what we know/can remember about mean, median, mode and range
Mean I’m not really sure What the MEAN is about Just add them all up And share them all out
The Mean To find the meanof a set of data you need to: 1. Find the total of all the data 2. Divide the total by the number of data values e.g. Find the mean of these numbers: 1) 55, 23, 54, 12, 87, 32 2) 1.3, -0.34, -2.6, 0.57, 85
Mode I don’t want to brag I don’t want to boast I am the MODE I am the most
The Mode The modeof a set of data is the most common or most popular value The mode does nothave to be a number e.g. Find the mode of these two sets of data: 1) 95, 90, 91, 90, 89, 84, 90 2) a, b, c, b, c, b, a, b, a, c, c
Median I don’t know the rhyme I don’t know the riddle I am the MEDIAN And I’m in the middle!
The Median • The medianis the piece of data in the middle • To find it you must first put all the data in size order • If you have two middle values, add them together and divide by two to get the answer e.g. Find the median of these two sets of data: 1) 29, 25, 0, 32, 14, 22, 14 2) 3.2, -27, 8.65, 0.04, 22.3, -1.1
Range From largest to smallest See how they change Take them away And I am the range
The Range The rangeof a set of data is the biggest value take away the smallest e.g. Find the range of these numbers: 1) 321, 554, 201, 438, 212, 545 2) 0.97, -2.213, -2.5, -1.1, 0.499