### Box-and-whisker plots

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Box-and-whisker plots A box-and-whicker plot is a diagram that shows the distribution of a set of data at a glance. They are drawn using five summary statistics: the lowest and highest values( the range), the first and third quartiles (The interquartile range) and the median. Drawing box-and-whisker plots All box-and-whisker plots have the same basic […]

### Making comparisons using averages and ranges

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Making comparisons using averages and ranges Having found a value to represent you data (an average) you can now compare two or more sets of data. However, just comparing the averages can sometimes be misleading. It can be helpful to know how consistent the data is and you for this by thinking about how spread […]

### Mean, Median and Mode

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Mean, Median and Mode What is a data set? A data set is a set that is collected for a specific purpose, so it`s an organized collection of data. The two most common types of data sets 1. Numerical data sets 2. Categorical data sets 1. Numerical data is a data type expressed in numbers, is always collected […]