Sunday, September 14, 2014

KURTOSIS - Descriptive Statistics using Microsoft Excel Statistical Functions

The practice sheet can be downloaded from Link. Statistics Marks Data - Download Sheet

About the Data Sheet - The data in this sheet is related to marks scored by 100 Students in a Statistical Test. 

Based on the data, we will use Microsoft Excel Statistical functions to analyse the descriptive statistics. 

In the Data Sheet, we have Data from A2:A101, A1 being the header of the Data. 

KURTOSIS

A statistical measure used to describe the distribution of observed data around the mean. It is sometimes referred to as the "volatility of volatility."

Used generally in the statistical field, kurtosis describes trends in charts.

Kurtosis characterizes the relative peakedness or flatness of a distribution compared with the normal distribution. Positive kurtosis indicates a relatively peaked distribution. Negative kurtosis indicates a relatively flat distribution.

= KURT(number1,number2,...)

Kurtosis is defined as:

where s is the sample standard deviation.

In the Data Sheet, we have Data from A2:A101, A1 being the header of the Data. 

=KURT(A2:A101)

Result is 1.6994

The result is positive highlights peaked distribution.

The practice sheet can be downloaded from Link. Statistics Marks Data - Download Sheet

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