This excel resource contains a series of interactive sheets exploring frequency tables and quartiles.
The first sheet calculates the mean from a frequency table. The second calculates an estimate for the mean from a grouped frequency table. New examples for both sheets can be generated at the click of a button.
The third interactive sheet demonstrates how linear coding can be used to calculate an estimate of the mean from a table. The assumed mean and divisor used can be altered to demonstrate the effect on the calculation.
The next sheet calculates the quartiles for a skewed set of grouped data using a cumulative frequency table.
In a similar way the next two sheets calculate the deciles, and then percentiles, for a set of grouped data.
This program was designed by be viewed on a screen with a resolution of 1024 x 768. Users may have to adjust the resolution of their screen for the pages to display as was originally intended. The program uses macros which need to be enabled on users’ machine.