Numerator
= 10 - ( [15*5] /5 )
= 10 - 15
= -5
Option 3) is the correct answer.
34. A set of n 5 pairs of X and Y scores has Σχ = 15, ΣΥ = 5, and ΣΧΥ = 10. For these data, the value of SP is- a. c.-10 d. 10 b. 5
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:
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.)
Use the given summary statistics to do the calculations in examples 9-12. n-10, Ex = 111, Ex? = 1371, 2y = 76, Ey? = 754, Exy = 702, b. = 18.9157, b, = -1.0194, x, = 15 n(Exy) -(Ex)(y) Example 8: Calculate the Correlation Coefficient, r = Vin(Ex')-(Ex)"][n(Ey) -(Ey)'l If you are unable to evaluate this expression as a whole, break it up into pieces using order of operations. Work to 5 decimal place in a - d) and round...
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.
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 ==
Consider n = 5 pairs (x! ,y, , . . . , (xt, y,'). Let x = n-ı Σ i , and y = n-ı Σ -1 y be the sample means of the x and y variables. Let & and Sy be the corresponding standard deviations. Let sry and rry be the sample covariance and sample correlation respective . Suppose x = 6.2,J = 8 8 2.95, sy4.494, sy 13.05. Part a) What is the sample correlation of the...
Consider the follow set of ?=5 (?,?)(x,y) pairs: ?x 20 25 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 = ?=
9. For the following set of scores, find the value of each expresion: b. (EX)2 c. Σ(X-1) d. Σ(X-1)2 9. For the following set of scores, find the value of each expresion: a.Σ b. (EX)2 c. Σ(X-1) d. Σ(x-1)?
Let x be the age in years of a licensed automobile driver. Let y be the percentage of all fatal accidents (for a given age) due to speeding. For example, the first data pair indicates that 39 % of all fatal accidents of 17-year-olds are due to speeding. 17 y 39 27 37 23 47 12 x 57 67 7 77 22 10 Complete parts (a) through (e), given Ex 329, Ey 118, E-18,263, Ey-2852, Exy 4086, and rm -0.939....