SHE

IMPORTANCE OF THE 3M 

The usual first line of teaching and tutorials in statistics is "Mean, Median, Mode" -  the 3M. What are they, and what is the importance of these three statistic? The mean, median and mode of a data set are collectively known as measures of central tendency as these three measures focus on where the data is centered or clustered. To analyze data using the mean, median and mode, we need to use the most appropriate measure of central tendency. We need to remember the following points:

a.       The mean is useful for predicting future results when there are no extreme values in the data set. However, the impact of extreme values on the mean may be important and should be considered.  

2. The median may be more useful than the mean when there are extreme values in the data set as it is not affected by the extreme values.
3. The mode is useful when the most common item, characteristic or value of a data set is required.

How do you go about this in a simple manner? Follow this link www.mathsteacher.com.au/year8 and this www.mathgoodies.com/lessons/toc_vol8