Range vs Standard Deviation

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5 Terms

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What is range

Difference between the highest and lowest values in a set of measurements

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How to calculate range?

Maximum value - minimum value

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What is standard deviation?

A measure of the spread of a set of values around the mean

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How to calculate standard deviation on calculator?

  • go on menu and go onto statistics

  • press 1 and input data into column

  • when all data entered, press OPTN

  • choose 3 and ox is SD

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Why do we use standard deviation

It measures variability of data, compares different sets, identifies outliers, indicates reliability of the mean and helps predict patterns