Mean, Mode and Median
Levels and central tendencies are very much related.
If the level of measurement is nominal then central tendency will be
only mode.
For ordinal level median will be used.
Level : What is the mean of 10, 20, 30 and 40?
Answer: 10 + 20 + 30 + 40 = 100
Mean = 100 ÷ 4 =25
Median: The central value of data is called median;
For example a set of values is 10,12,14,16,18,20,22
the central vale 16 is median.
Note: If a set may be consist on even numbers like as 2 4 6 8 10 12
the central two value collect and divided by two For example the above set 6, 8 are two central vales 6+8 = 14 ..... 14/2 = 7
The number 7 is Median.
Mode: The most frequent value is called MODE.
In a set the frequent vale is always mode for example a set of data is consist 2,4,4,6,7,8,9
the most frequent value 4 is mode.
NOTE: Some time two combine vale may be mode in this situation collect both values and divided by two like as 2, 4, 4, 6, 8, 8, 10
In the above group 4 and 8 two vales are frequent collect 2+8=10 and divided by two 10/2=5 the value 5 is Mode.
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