Measures of data

It is essential to be able to use and understand numerical data for fieldwork and in order to reach a conclusion. Handling data properly can show trends, patterns and can allow people to predict future trends.

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Exploring the use of statistical techniques that help geographers analyse the data they deal with every day

Data can be measured in the following ways:

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Median
This is the middle value in a list of numbers. This is found by ordering the numbers in numerical order and looking for the middle number
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Mean
This is the 'average'. This is calculated by adding up all the numbers and dividing by the total amount of numbers
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Range
The difference between the largest and smallest number in a set of data
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Quartiles
These are the values that divide the list of numbers into equal quarters
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Inter-quartile range
This is the difference between the upper quartile and lower quartile
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Mode
This is the number that occurs most often in a set of data
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Modal class
The group with the highest frequency

Statistical skills – WJECMeasures of data

Measures of data

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