Measures of Central Tendencies

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

The mean, median and the mode are the three measures of central tendencies.

    Mean: 

The mean or average for the ungrouped data is found by adding together the values of  the members of a set and dividing by the number of members in the set.   

      

 Solving Simultaneous Linear Equations:

In this video, you can learn how to solve simultaneous linear equations in 3 minutes using calculator.

 Mean of grouped data:

In this video, you can learn how to find the mean of grouped data in 4 minutes using Microsoft Excel.

 Mean of ungrouped data using Microsoft Excel.

In this video, students can learn how to find the mean of grouped data using the Microsoft Excel:

Representation of Data using Bar Graph and Pie-Chart:

In this video, one can learn how to represent data using the Bar Graph and Pie-Chart.

Legendre's R R 4 and 5

Legendre's R R 6