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Σ(- x i 1 9. Find the variance. Hint: S x п—1 10. Prove that when exam scores are weighted equally, the weighted mean is the same as the mean. 1.e. P n Σ. when scores are weighted equally XWi п i=1 i=1 n 11. The mean SAT (Scholastic Aptitude Test) score is 900 with a standard deviation of 200. According Chebyshev's Theorem at least what proportion of scores are between (a) 700 and 1100? (b) 500 and 1300? (c) 300 and 1500? п 12. Prove that the sum of the deviations from the mean is zero. i.e. Prove that (x- x) = 0. i-1 13. Use the following equation predicting pounds of garbage based on the number of people in the hou garbage = 10 household size+ 15 (a) Identify and interpret the slope. (b) Identify and interpret the intercept. (c) Find the residual of a household with 3 people which discarded 40 pounds of garbage. (d)Fill in the blank: The least squares linear regression line minimizes 14. One study showed a strong positive correlation between the number fire trucks sent to a fire and t

Σ(- x i 1 9. Find the variance. Hint: S x п—1 10. Prove that when exam scores are weighted equally, the weighted mean is the same as the mean. 1.e. P n Σ. when scores are weighted equally XWi п i=1 i=1 n 11. The mean SAT (Scholastic Aptitude Test) score is 900 with a standard deviation of 200. According Chebyshev's Theorem at least what proportion of scores are between (a) 700 and 1100? (b) 500 and 1300? (c) 300 and 1500? п 12. Prove that the sum of the deviations from the mean is zero. i.e. Prove that (x- x) = 0. i-1 13. Use the following equation predicting pounds of garbage based on the number of people in the hou garbage = 10 household size+ 15 (a) Identify and interpret the slope. (b) Identify and interpret the intercept. (c) Find the residual of a household with 3 people which discarded 40 pounds of garbage. (d)Fill in the blank: The least squares linear regression line minimizes 14. One study showed a strong positive correlation between the number fire trucks sent to a fire and t

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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Σ(- x i 1 9. Find the variance. Hint: S x п—1 10. Prove that when exam scores are weighted equally, the weighted mean is the same as the mean. 1.e. P n Σ. when scores are weighted equally XWi п i=1 i=1 n 11. The mean SAT (Scholastic Aptitude Test) score is 900 with a standard deviation of 200. According Chebyshev's Theorem at least what proportion of scores are between (a) 700 and 1100? (b) 500 and 1300? (c) 300 and 1500? п 12. Prove that the sum of the deviations from the mean is zero. i.e. Prove that (x- x) = 0. i-1 13. Use the following equation predicting pounds of garbage based on the number of people in the hou garbage = 10 household size+ 15 (a) Identify and interpret the slope. (b) Identify and interpret the intercept. (c) Find the residual of a household with 3 people which discarded 40 pounds of garbage. (d)Fill in the blank: The least squares linear regression line minimizes 14. One study showed a strong positive correlation between the number fire trucks sent to a fire and t
Transcribed Image Text:Σ(- x i 1 9. Find the variance. Hint: S x п—1 10. Prove that when exam scores are weighted equally, the weighted mean is the same as the mean. 1.e. P n Σ. when scores are weighted equally XWi п i=1 i=1 n 11. The mean SAT (Scholastic Aptitude Test) score is 900 with a standard deviation of 200. According Chebyshev's Theorem at least what proportion of scores are between (a) 700 and 1100? (b) 500 and 1300? (c) 300 and 1500? п 12. Prove that the sum of the deviations from the mean is zero. i.e. Prove that (x- x) = 0. i-1 13. Use the following equation predicting pounds of garbage based on the number of people in the hou garbage = 10 household size+ 15 (a) Identify and interpret the slope. (b) Identify and interpret the intercept. (c) Find the residual of a household with 3 people which discarded 40 pounds of garbage. (d)Fill in the blank: The least squares linear regression line minimizes 14. One study showed a strong positive correlation between the number fire trucks sent to a fire and t
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