A set of n = 5 pairs of X and Y scores has EX = 15, E Y = 5, and EXY = 10. For these data, what is the value of the numerator? 10 25 -5 -25
Study B X Y 4 5 8 7 8 6 13 Use the following data set and calculate the following: ΣΧ. ΣΥ (Σ)(Σ ) а. b. ΣΧΥ c. Pearson r
A set of n=10 pairs of X and Y scores has SSx=14, SSy=84, and SP=28. What is the slope of the regression equation for these scores? Answer:
For the data set shown below, complete parts (a) through (d) below. x 33 44 55 77 88 y 44 66 77 1313 1515 (a) Find the estimates of beta 0β0 and beta 1β1. beta 0β0almost equals≈b 0b0equals= -3.244 (Round to three decimal places as needed.) beta 1β1almost equals≈b 1b1equals=2.267 (Round to three decimal places as needed.) (b) Compute the standard error, the point estimate for sigmaσ. s Subscript eseequals=nothing (Round to four decimal places as needed.) b) Compute the...
Question 7 0.5 pts A set of n = 4 pairs of scores (X and Y values) has SSX-5, SSY-625, and SSXY-50. The coefficient of determination (R2) for these data is__.. (Round your answer to two decimal places.) Question 7 0.5 pts A set of n = 4 pairs of scores (X and Y values) has SSX-5, SSY-625, and SSXY-50. The coefficient of determination (R2) for these data is__.. (Round your answer to two decimal places.)
a. One set of 10 pairs of scores, X and Y values, produces a correlation of r = 0.60. If SSY = 200, find the standard error of estimate for the regression line. b. A second set of 10 pairs of X and Y values produces a correlation of r = 0.40. If SSY = 200, find the standard error of estimate for the regression line.
9, X = 3, 4, 5, and 7; compute Σ, (ΣΧ), and ΣΧ2 10. X EX --3, 0, 1, and 2; compute Σ(X-1), and D3-3 11. X-3,4,5, and 7; Y-1,0,1, and 2 compute ΣΧΥ and (DIP X-3, 4, 5, and 7; Ys-1,0,1, and 2; compute ΣΧ'ya and Σ(X-2)(Y-3) 's 4, 5, 6, and 9; Y -1,-1, 1, and 2; compute ΣΥ2 and Σ(X-5)(Y+ 1) 12. 13.
A) For the following scores, find the value of each expression: X 3 5 O 2 1. Σx 2. Σx2 3. ΣΧ+1 4. Σ (Χ+1) B. For the following set of scores, find the value of each expression: X 3 2. 5 1 3 1. x2 2. (2x) 3. (X-1) 4. (x-1)2 C) For the following set of scores, find the value of each expression: X 6 -2 0 -3 -1 1. Ex 2. x2 3. (X+3) D) For the...
(a) Suppose you are given the following (x, y) data pairs. x 1 2 5 y 2 1 8 Find the least-squares equation for these data (rounded to three digits after the decimal). ŷ = + x (b) Now suppose you are given these (x, y) data pairs. x 2 1 8 y 1 2 5 Find the least-squares equation for these data (rounded to three digits after the decimal). ŷ = + x (c) In the data for parts (a) and (b), did...
Problem 1. (16 points) Consider the follow set of n = 5(x, y) pairs: x 2025 26 30 35 y 21 30 35 31 40 NOTE: SXX = 126.8, SXY = 139.6, SYY = 197.2, X = 27.2, and y = 31.4. Compute the sample correlation correct to three decimal places of accuracy. Correlation ==