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https://math.answers.com/math-and-arithmetic/How_do_you_calculate_Q1_Q3_IQR_and_the_standard_deviation

How do you calculate Q1 Q3 IQR and the standard deviation? - Answers

Suppose there are n observations. Put them in ascending order (smallest first) of size. Calculate k = n/4. Round up to the next integer, if necessary. Then Q1 is the kth observation in the ordered sets. Also Q3 is the 3kth observation in the ordered sets. IQR = Q3 - Q1 Calculation of the standards deviation is a lot more work. First find the mean = sum of all the observations, divided by the number of observations. Call that number M. Next find the mean "sum of squares", MSS. Square the value of each observation and add them together. Then divide this sum by the number of observations. Then the Variance is V = MSS - M2 Finally, the standard deviation is sqrt(V).



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How do you calculate Q1 Q3 IQR and the standard deviation? - Answers

https://math.answers.com/math-and-arithmetic/How_do_you_calculate_Q1_Q3_IQR_and_the_standard_deviation

Suppose there are n observations. Put them in ascending order (smallest first) of size. Calculate k = n/4. Round up to the next integer, if necessary. Then Q1 is the kth observation in the ordered sets. Also Q3 is the 3kth observation in the ordered sets. IQR = Q3 - Q1 Calculation of the standards deviation is a lot more work. First find the mean = sum of all the observations, divided by the number of observations. Call that number M. Next find the mean "sum of squares", MSS. Square the value of each observation and add them together. Then divide this sum by the number of observations. Then the Variance is V = MSS - M2 Finally, the standard deviation is sqrt(V).



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https://math.answers.com/math-and-arithmetic/How_do_you_calculate_Q1_Q3_IQR_and_the_standard_deviation

How do you calculate Q1 Q3 IQR and the standard deviation? - Answers

Suppose there are n observations. Put them in ascending order (smallest first) of size. Calculate k = n/4. Round up to the next integer, if necessary. Then Q1 is the kth observation in the ordered sets. Also Q3 is the 3kth observation in the ordered sets. IQR = Q3 - Q1 Calculation of the standards deviation is a lot more work. First find the mean = sum of all the observations, divided by the number of observations. Call that number M. Next find the mean "sum of squares", MSS. Square the value of each observation and add them together. Then divide this sum by the number of observations. Then the Variance is V = MSS - M2 Finally, the standard deviation is sqrt(V).

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      Suppose there are n observations. Put them in ascending order (smallest first) of size. Calculate k = n/4. Round up to the next integer, if necessary. Then Q1 is the kth observation in the ordered sets. Also Q3 is the 3kth observation in the ordered sets. IQR = Q3 - Q1 Calculation of the standards deviation is a lot more work. First find the mean = sum of all the observations, divided by the number of observations. Call that number M. Next find the mean "sum of squares", MSS. Square the value of each observation and add them together. Then divide this sum by the number of observations. Then the Variance is V = MSS - M2 Finally, the standard deviation is sqrt(V).

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