Compute the correlation co-efficient between the variables X and Y represer following table: X 4 11 Y 18 12 7 5
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A: Calculation: From the table,
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Q: Find the Covariance and the Correlation between X and Y
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Q: Match each scatterplot shown below with one of the four specified correlations. a. -0.39 b. О.36 C.…
A: To Match each scatterplot shown below with one of the four specified correlations.
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A: The formula for the calculation of correlation co-efficient is r=n∑xy−∑x⋅∑yn∑x2−∑x2×n∑y2−∑y2.
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A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…
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A: X Y X.Y X2 Y2 -13 -16 208 169 256 -11 -14 154 121 196 -4 3 -12 16 9 -7 -5 35 49 25 -9…
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A: Solution is given:
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A: Solution: Correlation: Two variables are said to be correlated where there is an association between…
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A: Mx= Mean of X Values=∑xiin=(6+5+7+3+1+8)6=306=5 My= Mean of Y Values=∑yiin=(3+5+3+6+10+3)6=306=5
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Q: Compute the correlation coefficien x16 52 3 y1 365 4
A: x = 1,6,5,2,3 y= 1,3,6,5,4
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A: This is a problem of theoretical distribution.
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Q: Determine the value that the correlation, r, could be for the following scatter plot. -0.8 0.04 -1 0…
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Q: Calculate the correlation coefficient, r of the following data: Variable X 24 Variable Y 44 13 8 81…
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Q: Match each scatterplot shown below with one of the four specified correlations. a. -0.85 b. 0.36 c.…
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Q: The correlation coefficient is r
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- Let the coefficient of correlation of two variables X and Y be larger than zero. What will be the effect on it, if the data of X are multiplied by the factor of 2? a) The effect depends on the data of X. b) It depends on Y . c) The coefficient will be doubled. d) It will be increased fourfold.Calculate the correlation co-efficient by first multiplying each X and Y by 10 a b) subtracting 70 from each X and 60 from each Y. X 8.2 9.6 7.0 9.4 10,9 7.1 9.0 6.6 8.4 10.5 12.4 Y 8.7 9.6 6.9 8.5 11.3 7.6 9.2 6.3 8.4Q1, a. define correlation and it's types. b. write the properties of r.
- Indicate which correlation coefficient represents a stronger relation between two variables A) -.85 B) +.65 C) 0.00 D) -.70Use the following table to find the linear correlation coefficient between x and y x112432y311234Calculate the correlation coefficient r, letting Row 1 represent the x-values and Row 2 the y-values. Then calculate it again, letting Row 2 represent the x-values and Row 1 the y-values What effect does switching the variables have on r? Row 1 Row 2 16 20 165 36 187 50 55 130 74 122 61 204 111 180
- Which of the scatter diagrams below suggests a strong positive linear relationship between the x and y variables?2. Determine if the correlation between the two given variables is likely to be positive or negative, or if they are not likely to display a linear relationship. The number of pets owned by a family and the cost of their vet bills A) Positive B) Negative C) No correlation essaGenerally speaking, if two variables are unrelated (as one increases, the other shows no pattern), the covariance will be: A perfect straight line sloping downward would produce a correlation coefficient equal to: A) +2 B) +1 C) -1 D) -2
- Q3) Interpret the following coefficient of correlation r = -0.83The table below contains the height in centimeters for10 sets of adult women twins. Calculate the correlationcoefficient (r) between the heights of the sisters for thetwin pairs.If the variable “Attractiveness” increases and the variable “Weight” appears to go down, we would say the correlation is: A) Zero B) Positive C) Negative D) Impossible to determine.