Measures of Central Tendency

A measure of central tendency is a single value that attempts to describe a set of data by identifying the central position within set of data.

Central tendency are also referred as measures of central location & also as summary of statistics

The valid measures of central tendency are
 mean:
 Simple average of all the values in the distribution
 Mean calculated over the population is represented by μ & Mean of sample is represented by x̄
 median:
 The median is the middle number in an ordered dataset
 The median is the number at position (n+1)/2
 mode: This is value which appears often in the dataset
 mean:

Calculate Mean, Median and mode for the salary sample in hyderabad Refer Here
Skewness
 This is measure of asymmetry that indicates whether the observerations in dataset are concentrated in one side
 Refer Here for the excel sheet
 Exercise: Try to find the skewness and also plot as shown in the above image for the excel Refer Here