# Calculating Sample Size

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Statistically, 10% of a population is enough to estimate the survey results of 100%. But if you have a huge dataset, such as 1 billion records, instead of looking at 10% of the population (which is still large), you can look for the optimal (minimum) amount of data to survey.

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Contributed by: Daniel de Souza Carvalho (March 2017)

Open content licensed under CC BY-NC-SA

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