Linda's Measures Of Central Tendency

Sunday, September 28, 2008
MEAN
Definition:
-Arrange the data in ascending order

-Add all the data and divide by how many pieces of data there are

-When an outliers are present, it makes the mean less accurate
MEDIAN
Definition:

-You must arrange the data in ascending order

-Find the number in the middle number

-If there are 2 numbers in the middle, add them, then divide by 2

-Using the median is appropriate if there are outliers present because it gets rid of them


MODE

Definition:

-Arrange the data in ascending order
-
The most frequently occurring number in a set of data

-There can be more than one mode

-There can be no mode at all


RANGE
Definition:
-You must arrange the data in ascending order

-Subtract the smallest data from the biggest data

-Range tells you if there are outliers

-The smaller the range, the less chance there is of being outliers present

Here is a video of Mean Median and Mode...


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