Consider the following bivariate data. Point A B C D E F G H I J...
Consider the following bivariate data.
| Point | A | B | C | D | E | F | G | H | I | J |
| x | 4 | 3 | 0 | 4 | 7 | 1 | 6 | 5 | 7 | 2 |
| y | 4 | 6 | 7 | 0 | 7 | 7 | 3 | 3 | 7 | 1 |
(b) Calculate the covariance. (Give your answer correct to two
decimal places.)
A = -0.167
(c) Calculate sx and sy.
(Give your answers correct to three decimal places.)
sx =
| sy | = |
(d) Calculate r using formula 13.2. (Give your answer
correct to two decimal places.)
(e) Calculate r using formula 13.3. (Give your answer
correct to two decimal places.)
Homework Answers
Consider the following bivariate data. Point A B C D E F G H I J...
Consider the following bivariate data. Point A B C D E F G H I J x 1 4 6 6 4 3 7 4 5 0 y 7 6 3 4 0 6 2 0 6 3 (a) Construct a scatter diagram of the given bivariate data. (Do this on paper. Your instructor may ask you to turn in this work.) (b) Calculate the covariance. (Give your answer correct to two decimal places.) (c) Calculate sx and sy. (Give...
Consider the following bivariate data. Point A B C D E F G H I J...
Consider the following bivariate data. Point A B C D E F G H I J x 0 6 5 6 0 0 2 5 1 0 y 5 3 1 5 3 6 4 6 5 0 (a) Construct a scatter diagram of the given bivariate data. (Do this on paper. Your instructor may ask you to turn in this work.) (b) Calculate the covariance. (Give your answer correct to two decimal places.) (c) Calculate sx and sy. (Give...
Consider the following set of data. (15, 12), (34, 45), (62, 31), (78, 18), (106, 64),...
Consider the following set of data. (15, 12), (34, 45), (62, 31), (78, 18), (106, 64), (122, 12) (a) Calculate the covariance of the set of data. (Give your answer correct to two decimal places.) (b) Calculate the standard deviation of the six x-values and the standard deviation of the six y-values. (Give your answers correct to three decimal places.) sx = sy = (c) Calculate r, the coefficient of linear correlation, for the data in part (a). (Give your...
Consider the following set of data. (15, 13), (32, 50), (64, 34), (79, 21), (108, 56),...
Consider the following set of data. (15, 13), (32, 50), (64, 34), (79, 21), (108, 56), (120, 5) (a) Calculate the covariance of the set of data. (Give your answer correct to two decimal places.) (b) Calculate the standard deviation of the six x-values and the standard deviation of the six y-values. (Give your answers correct to three decimal places.) sx = sy = (c) Calculate r, the coefficient of linear correlation, for the data in part (a). (Give your...
Consider the following set of data. (19, 11), (26, 53), (65, 28), (77, 20), (108, 56),...
Consider the following set of data. (19, 11), (26, 53), (65, 28), (77, 20), (108, 56), (118, 11) (a) Calculate the covariance of the set of data. (Give your answer correct to two decimal places.) A = -5.63 (b) Calculate the standard deviation of the six x-values and the standard deviation of the six y-values. (Give your answers correct to three decimal places.) sx = sy = (c) Calculate r, the coefficient of linear correlation, for the data in part...
Consider the following set of data. (19, 14), (29, 55), (55, 25), (83, 21), (106, 61),...
Consider the following set of data. (19, 14), (29, 55), (55, 25), (83, 21), (106, 61), (125, 12) (a) Calculate the covariance of the set of data. (Give your answer correct to two decimal places.) (b) Calculate the standard deviation of the six x-values and the standard deviation of the six y-values. (Give your answers correct to three decimal places.) sx = sy = (c) Calculate r, the coefficient of linear correlation, for the data in part (a). (Give your...
Let U ={a, b, c, d, e, f, g, h, i, j, k}. Let A={d, f,...
Let U ={a, b, c, d, e, f, g, h, i, j, k}. Let A={d, f, g, h, i, k}. Let B={a, d, f, g, h}. Let C={a, c, f. i, k} Determine (AUC) U ( AB). Choose the correct answer below and, if necessary, fill in the answer box in your choice. OA. (AUC) U(ANB)= } (Use a comma to separate answers as needed.) OB. (A'UC) U (ANB) is the empty set. LE This Question: 1 pt Let U={x|XEN...
Consider the following set of data. (21, 5), (33, 51), (59, 32), (83, 21), (113, 58),...
Consider the following set of data. (21, 5), (33, 51), (59, 32), (83, 21), (113, 58), (119, 8) (a) Calculate the covariance of the set of data. (Give your answer correct to two decimal places.) (b) Calculate the standard deviation of the six x-values and the standard deviation of the six y-values. (Give your answers correct to three decimal places.) (c) Calculate r, the coefficient of linear correlation, for the data in part (a). (Give your answer correct to two...
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X Company, a manufacturer, incurred the following total costs during the year: Direct materials Direct labor Overhead $53,608 113,177 155,888 The following additional information was available: • Revenue for the year was $85,034. Direct material purchases during the year were $30,062. • Several jobs that cost a total of $18,145 were unfinished as of...
Suppose you have a categorical variable X with nine categories: A, B, C, D, E, F, G, H and I. The frequencies corre...
Suppose you have a categorical variable X with nine categories: A, B, C, D, E, F, G, H and I. The frequencies corresponding to these categories are 25, 12, 7, 4, 6, 2, 1, 0, and 2 Consider now X is a vector of these frequencies and give R expressions that return the categories and its corresponding frequencies as below: X A B D E F G I 25 12 7 4 2 1 0 Now you wish to remove...
Let U ={a, b, c, d, e, f, g, h, i, j, k}. Let A={d, f, g, h, i, k}. Let B={a, d, f, g, h}. Let C={a, c, f. i, k} Determine (AUC) U ( AB). Choose the correct answer below and, if necessary, fill in the answer box in your choice. OA. (AUC) U(ANB)= } (Use a comma to separate answers as needed.) OB. (A'UC) U (ANB) is the empty set. LE This Question: 1 pt Let U={x|XEN...
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images are as large as I can get them! Please try to zoom
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X Company, a manufacturer, incurred the following total costs during the year: Direct materials Direct labor Overhead $53,608 113,177 155,888 The following additional information was available: • Revenue for the year was $85,034. Direct material purchases during the year were $30,062. • Several jobs that cost a total of $18,145 were unfinished as of...
Suppose you have a categorical variable X with nine categories: A, B, C, D, E, F, G, H and I. The frequencies corresponding to these categories are 25, 12, 7, 4, 6, 2, 1, 0, and 2 Consider now X is a vector of these frequencies and give R expressions that return the categories and its corresponding frequencies as below: X A B D E F G I 25 12 7 4 2 1 0 Now you wish to remove...
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