Central Tendency It is a measure that tells us where the middle of a bunch of data lies.
3 most common measures of central tendency are the mean, the median, and the mode.
Let’ s take a situation where Mary & Hari got marks for 5 questions. Both of them claim to have performed better. Let’ s see who has performed better in the exam.
Mean: Let’ s find the average scores. Average Score of Mary is( 10 + 8 + 9 + 8 + 7)/ 5 = 8.4 Average Score of Hari is( 4 + 7 + 10 + 10 + 10)/ 5 = 8.2 Based on the Mean data, Mary has performed better.
The mean( or average) of a number of observations is the sum of the values of all the observations divided by the total number of observations. It is denoted by‘ x bar’.