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# Standard Deviation1

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### Standard Deviation1

1. 1. By: Janine Woodbury
2. 2. <ul><li>What Is the standard deviation in the amount of goals scored between a game lost and a game won? </li></ul>
3. 3. UNO… Find the average of goals scored by the USA. 19/12= 1.583
4. 4. DOS… Second step is the subtract the average of goals scored overall by the number of goals scored in each game. AVERAGE GOALS DIFFERENCE 1.583 1 .583 1.583 1 .583 1.583 1 .583 1.583 1 .583 1.583 4 -2.417 1.583 3 -1.417 1.583 1 .583 1.583 1 .583 1.583 2 -.417 1.583 1 .583 1.583 2 -.417 1.583 1 .583
5. 5. TRES… After you subtract the average of goals and the amount scored each game, you square the deviation. Deviation Deviation 2 .583 .339889 .583 .339889 .583 .339889 .583 .339889 -2.417 5.841889 -1.417 2.007889 .583 .339889 .583 .339889 -.417 .173889 .583 .339889 -.417 .173889 .583 .339889
6. 6. QUATRO… After Squaring the deviation, add them together and divide them by the number of deviations there are. Deviation 2 .339889 .339889 .339889 .339889 5.841889 + 2.007889 .339889 .339889 .173889 .339889 .173889 .339889 10.916668
7. 7. C Í NCO… <ul><li>Divide the sum by the amount of deviations to calculate the variance. </li></ul><ul><li>10.916668 ÷ 12 = .90972 </li></ul>
8. 8. S Í ES <ul><li>After finding the variance, find the square root of it. </li></ul><ul><li>√‾ .90972 = .95379 </li></ul>
9. 9. THE END