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Recent questions tagged variance

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How is it that data from a normal distribution that is more than 2 standard deviations from the mean is 5%? It seems to contradict the 68-95-99.7 rule.
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asked Dec 15, 2021 in Data Science & Statistics by MathsGee Platinum (122,736 points) | 111 views
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asked Jun 17, 2021 in Data Science & Statistics by Maths Genie Bronze Status (5,586 points) | 129 views
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asked Aug 24, 2020 in Mathematics by Joshua Mwanza Diamond (51,996 points) | 98 views
1 Calculate the standard deviation  2 The coefficient of variation
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Calculate each of the following without the use of a calculator. From the sale prices, calculate 1 The mean 2 Standard deviation
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