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You used SS₂ = Σ(x-x) when calculating variance and standard deviation. An alternative formula for the standard deviation that is sometimes convenient for hand calculations is shown below. You can find the sample variance by dividing the sum of squares by n-1, and the sample standard deviation by finding the square root of the sample variance. Complete parts (a) and (b) below. (Ex)² SSX = Ex² n Click the icon for a table of the ages (in years) of shoppers at a local store. (a) Use the shortcut formula to calculate the sample standard deviation. S= (Simplify your answer. Round to one decimal place as needed.)

You used SS₂ = Σ(x-x) when calculating variance and standard deviation. An alternative formula for the standard deviation that is sometimes convenient for hand calculations is shown below. You can find the sample variance by dividing the sum of squares by n-1, and the sample standard deviation by finding the square root of the sample variance. Complete parts (a) and (b) below. (Ex)² SSX = Ex² n Click the icon for a table of the ages (in years) of shoppers at a local store. (a) Use the shortcut formula to calculate the sample standard deviation. S= (Simplify your answer. Round to one decimal place as needed.)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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You used SS, = Σ(x-x) when calculating variance and standard deviation. An alternative formula for the standard deviation that is sometimes convenient for hand calculations is shown below. You can find the sample variance by dividing the sum of squares by n-1, and the sample standard deviation by finding the square root of the sample variance. Complete parts (a) and (b) below. (Ex)² SSx Click the icon for a table of the ages (in years) of shoppers at a local store. = Σχε (a) Use the shortcut formula to calculate the sample standard deviation. S= (Simplify your answer. Round to one decimal place as needed.)
Transcribed Image Text:You used SS, = Σ(x-x) when calculating variance and standard deviation. An alternative formula for the standard deviation that is sometimes convenient for hand calculations is shown below. You can find the sample variance by dividing the sum of squares by n-1, and the sample standard deviation by finding the square root of the sample variance. Complete parts (a) and (b) below. (Ex)² SSx Click the icon for a table of the ages (in years) of shoppers at a local store. = Σχε (a) Use the shortcut formula to calculate the sample standard deviation. S= (Simplify your answer. Round to one decimal place as needed.)
4 n ex You used SS = x (x-x)² when calculating variance and standard deviation. An alternative formula for the standard deviation that is sometimes convenient for hand calculations is shown below. You can find the sample variance by dividing the sum of squares by n-1, and the sample standard deviation by finding the square root of the sample variance. Complete parts (a) and (b) below. (Ex)² SS = Ex². Click the icon for a table of the ages (in years) of shoppers at a local store. Data table 19 16 15 18 20 17 19 16 Shoppers' Ages 20 20 18 18 20 19 24 20 18 18 16 16 n X ar all Check answer
Transcribed Image Text:4 n ex You used SS = x (x-x)² when calculating variance and standard deviation. An alternative formula for the standard deviation that is sometimes convenient for hand calculations is shown below. You can find the sample variance by dividing the sum of squares by n-1, and the sample standard deviation by finding the square root of the sample variance. Complete parts (a) and (b) below. (Ex)² SS = Ex². Click the icon for a table of the ages (in years) of shoppers at a local store. Data table 19 16 15 18 20 17 19 16 Shoppers' Ages 20 20 18 18 20 19 24 20 18 18 16 16 n X ar all Check answer
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