DATA MANAGEMENT / MEASURES OF CENTRAL TENDANCY
Mean  is the average of all the numbers. You add all the numbers in the set together and divide it by how much numbers there are.
 example: 5+5+5+5=20 20/4=5
Mode  is the most common number that appears in the set of numbers. You can have more than 1 mode or no modes at all.

example: 2,2,3,5,7 2 is the most common number that appears
Median  is the middle number in the set of numbers. You need to have a numerical order to find the median

example: 2,2,3,5,7 3 would be the median because it's in the middle of the set of numbers
Range  is the difference between the largest and the smallest values in the data set. You have to subtract the largest number and the smallest number in the set of numbers to find the range.
Graphing
This is a graph:
x Axis – is the constant or your term.
y Axis – is the variable. It is the item that changes.
You must label the x and y axis. You also have to label the title.
Example:
Miles Walked
Questions
Sam made the following on unit tests for the term:
92,98,15,92,87,92
Find the mean, median, mode and range.
Mean

92+98+15+92+87+92=476

476/6=79.33
Median

92,98,15,92,87,92

15,87,92,92,92,98
Mode
Range

92,98,15,92,87,92

9815=83
LINKS
Student Led Electronic Portfolio
BIBLIOGRAPHY
Titles made in
Information taken from
Questions taken from
 Data Management Test
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