The values of correlation coefficient x and :y of between -1,1 -1,0 0,1 O
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Q: Which of the following is not a property of correlation? Correlation is not affected by the change…
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A: Hi! Thank you for the question, as per the honor code, we are allowed to answer three sub-parts at a…
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A: Here use correlation coefficient
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A: It is given that∑xi=743,∑yi=2223∑xi2=70927,∑yi2=618065∑xiyi=205719,n=8
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- 19A negative value for a correlation indicates____ increase in X tend to be accomplished by the increase in Y how much weaker relationship then if the correlation were positive a much stronger relationship than if the correlation were positive increase in X tend to be accomplished by decrease in YQuestion: Calculate the Pearson's correlation coefficient (r) between two variables, x and y, with the following data: x: [1, 2, 3, 4, 5] y: [2, 4, 6, 8, 10]
- A sample of 30 ordered pairs produces a linear correlation coefficient of r-0.026 Which of the following statements would be true? No regression line could be calculated from these ordered pairs Although no linear correlation exists, there might be a strong non-linear correlation A negative linear correlation exists A positive linear correlation exists The regression line would not pass through the point (x, y)A Of two personnel evaluation techniques available, the first requires a 2-hour test-interview while the second can be completed in less than an hour. The scores for each of the eight individuals who took both tests are given in the table below. Applicant Test 1 (x) Test 2 (y) 1 75 38 2 90 56 60 35 71 46 92 58 3 4 5 7 8 106 55 87 69 30 52 (a) Find the correlation coefficient r to describe the relationship between the two tests. (Round your answer to three decimal places.) r= (b) Would you be willing to use the second and quicker test rather than the longer test-interview to evaluate personnel? Explain. O The correlation coefficient is close to -1, indicating that the second and quicker test could be used in place of the longer test-interview. O The correlation coefficient is close to 1, indicating that the second and quicker test could be used in place of the longer test-interview. O The correlation coefficient is close to 1, indicating that the second and quicker test could not be…Q5/A// Determine the correlation Company A В C coefficient for the data X 73 30 21 18 Y 7 8. 9. D/ID
- required question (a) Point out the inconsistency in the statements: (i) The regression of y on x is 2y + 3x = 4 and the correlation coefficient between x and y is %3D 0.8. (ii) The correlation coefficient between 3x and-2y is the same as the correlation coefficient between x and y. answer Your Answer2.)Use the following data where Y is the dependent and X is the independent variable: SALES EXPERIENCE Y ('000TL) X(Years) 114 61 129 135 117 6 17 11 7 12 Test the hypothesis that there is a significant correlation between Y and X at 1% level of significance.Which of the following is not a property of the product moment correlation coefficient? it is independent of sample size and units of measurement. it is a measure of association between two variables. it always lies between 1 and -1. it implies a causal relationship between two variables.
