A Stem & Leaf diagram is a way of representing data in a tabular format. The left section of the diagram is called the ‘STEM’ and the right section is. read more…

Box plots are used to represent the 5 data items listed below graphically, which are: Lowest value in the dataset Lower Quartile (LQ) Median Upper Quartile (UQ) Highest value in. read more…

Completing a Cumulative Frequency table is a simple exercise. This is done by simply performing some addition on the data you are given. Here are a couple of examples. Example. read more…

Both the ‘Range’ and ‘Interquartile Range’ measure the spread of our data set. That is they both tell us how spread out our data set is; so the bigger the. read more…

If you have a data set, you can be asked to provide 4 measurements on this data. These are: Lower Quartile (Q1), Median (Q2), Upper Quartile (Q3) and Interquartile Range.. read more…

In data analysis, there are 3 types of ‘Average’; which are Mean, Median and Mode, and one which measures the ‘Spread’, which is the Range. The below examples explain how. read more…

## Category: Statistics

## Stem & Leaf Diagrams

A Stem & Leaf diagram is a way of representing data in a tabular format. The left section of the diagram is called the ‘STEM’ and the right section is. read more…

## Frequency Polygons

A frequency polygon is a line graph that is based on a frequency table. Frequency polygons are similar to histograms. Here is an example below.

## Box Plots

Box plots are used to represent the 5 data items listed below graphically, which are: Lowest value in the dataset Lower Quartile (LQ) Median Upper Quartile (UQ) Highest value in. read more…

## Completing a Cumulative Frequency Table

Completing a Cumulative Frequency table is a simple exercise. This is done by simply performing some addition on the data you are given. Here are a couple of examples. Example. read more…

## Range vs. Interquartile Range

Both the ‘Range’ and ‘Interquartile Range’ measure the spread of our data set. That is they both tell us how spread out our data set is; so the bigger the. read more…

## Part (I) – Quartiles & Interquartile Range

If you have a data set, you can be asked to provide 4 measurements on this data. These are: Lower Quartile (Q1), Median (Q2), Upper Quartile (Q3) and Interquartile Range.. read more…

## Statistics – Mean, Median, Mode and Range

In data analysis, there are 3 types of ‘Average’; which are Mean, Median and Mode, and one which measures the ‘Spread’, which is the Range. The below examples explain how. read more…