MEASURES OF CENTRAL TENDENCY
A measure of central tendency is a measure that tells us where the middle of a bunch of data lies.The three most common measures of central tendency are the mean, the median, and the mode.
WHAT IS THE MEAN:
Mean is the most common measure of central tendency. It is simply the sum of the numbers divided by the number of numbers in a set of data. This is also known as average.
WHAT IS THE MEDIAN:
Median is the number present in the middle when the numbers in a set of data are arranged in ascending or descending order. If the number of numbers in a data set is even, then the median is the mean of the two middle numbers.
WHAT IS THE MODE:
Mode is the value that occurs most frequently in a set of data.
EXAMPLES OF CENTRAL TENDENCY:
For the data 1, 2, 3, 4, 5, 5, 6, 7, 8 the measures of central tendency are
Mean = 1+2+3+4+5+6+7+8 41
-------------------------- = ----- = 4.56
9 9
Median = 5
Mode = 5
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