Introduction
Mean, median, and mode are three kinds of "averages". There are many "averages" in statistics, but these are, I think, the three most common, and are certainly the three you are most likely to encounter in your pre-statistics courses, if the topic comes up at all.
The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers. The "median" is the "middle" value in the list of numbers. To find the median, your numbers have to be listed in numerical order, so you may have to rewrite your list first. The "mode" is the value that occurs most often. If no number is repeated, then there is no mode for the list.
The "range" is just the difference between the largest and smallest values.
Task
Complete the questions on the Webquest guide.
Process
Name:
WEB QUEST MEAN, MEDIAN, MODE, RANGE WORKSHEET
MODE
http://www.mathsisfun.com/mode.html
The Mode is the ______________________________________________________________.
FIND THE MODE OF
1) 10,20,30,20,30,10,30,20,30,15
2) 31,43,53,41,53,31,43,43
RANGE
http://www.mathgoodies.com/lessons/vol8/range.html
The range is the difference between ______________________________________________________________.
FIND THE RANGE OF
1) 339, 445, 226, 712, 120, 263
2) 199, 211, 63, 200, 544, 347, 727, 98, 110
MEDIAN
http://www.mathsisfun.com/median.html
To find the Median put the numbers in ___________________and find the ___________________.
FIND THE MEDIAN OF
1) 12,2,4,1,7,9,10,11,16,12,18
2) 41,32,57,22,19,66,34
MEAN
http://www.mathsisfun.com/mean.html
To find the MEAN we ………………………
FIND THE MEAN OF
1) 2,3,4,5,6
2) 10,12,12,26
3) 8,12,32,14,15,6,17,13,3,10
1) The number of goals a netballer scored in the 12 games of a season was as follows 1,1,1,1,2,2,2,3,3,3,8,12. A local newspaper reporter asked the netballer what his average was for the season.
a) Which measure of center (mean, median, or mode) should the netballer give the reporter as his “average” so that the value of the average is as high as possible?
b) Which measure of center would you choose to best describe the number of goals the netballer typically scored each game? Why?
2) Do the following activity
http://www.bbc.co.uk/bitesize/ks2/maths/data/mode_median_mean_range/play/
3) Play Game RAGS TO RICHES
http://www.quia.com/rr/51667.html
4) Watch and complete the Study Jams for Mean, Median, Mode, and Range!
5.) Take the quiz!
Evaluation
Teacher Created Rubric
Conclusion
Have fun!