Standard Deviation
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Transcript of Standard Deviation
![Page 1: Standard Deviation](https://reader038.fdocuments.net/reader038/viewer/2022100604/5597dac21a28aba95e8b47f7/html5/thumbnails/1.jpg)
![Page 2: Standard Deviation](https://reader038.fdocuments.net/reader038/viewer/2022100604/5597dac21a28aba95e8b47f7/html5/thumbnails/2.jpg)
The total population of Worcester County is 709,705
There are 61 towns in the County The average population in each town is about
11,828
![Page 3: Standard Deviation](https://reader038.fdocuments.net/reader038/viewer/2022100604/5597dac21a28aba95e8b47f7/html5/thumbnails/3.jpg)
There are 61 towns in the County The total population is 709,705 To find the average you need to divide the sum
of the population by the number of numbers 709,705/61 =11,828 The average population of all 61 towns is 11,828
![Page 4: Standard Deviation](https://reader038.fdocuments.net/reader038/viewer/2022100604/5597dac21a28aba95e8b47f7/html5/thumbnails/4.jpg)
To find the standard deviation of a number set you first have to find the average
You then take the average and subtract it from each number
Then you square each number and add them to get your variance
Then you divide the answer by the number of numbers and find the square root of the variance. And you have you answer.
![Page 5: Standard Deviation](https://reader038.fdocuments.net/reader038/viewer/2022100604/5597dac21a28aba95e8b47f7/html5/thumbnails/5.jpg)
![Page 6: Standard Deviation](https://reader038.fdocuments.net/reader038/viewer/2022100604/5597dac21a28aba95e8b47f7/html5/thumbnails/6.jpg)
![Page 7: Standard Deviation](https://reader038.fdocuments.net/reader038/viewer/2022100604/5597dac21a28aba95e8b47f7/html5/thumbnails/7.jpg)
The standard deviation of all 61 towns in Worcester County is 21849
The average population is of all the towns is about 11,828
The variance is 29,120,112,671