## 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
• 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 • 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

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