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In a negative correlation, higher scores on one variable are associated with second variable scores on...
For given input prices, isocosts closer to the origin are associated with: Select one: A. higher costs. B. initially lower, then higher costs. C. lower costs. D. the same costs.
Consider the following scatterplot, regression equation, and correlation of midterm and final exam scores for a class of 15 students. Which of the following are true statements? Select one answer ı points Y ะ 90.6-0.489x , r -0.602 110 100 90 80 , 5어 2 20 40 60 80 100 Mdterm Exam Score I. The same number of students scored 100 on the midterm exam as scored 100 on the final exam. II. Students who scored higher on the midterm...
The authors of a paper studied the relationship between y = arch height and scores on a number of different motor ability tests for 218 children. They reported the following correlation coefficients. Motor Ability Test Correlation between Test Score and Arch Height Height of Counter Movement Jump -0.03 Hopping: Average Height -0.09 Hopping: Average Power -0.06 Balance, Closed Eyes, One Leg 0.05 Toe Flexion 0.10 (a) Identify the value of the correlation coefficient between average hopping height and arch height....
The researcher wants to know if there is any relationship between resilience (higher scores equal higher rates of resilience) and optimism (higher scores equal higher levels of optimism). Resilience scores (X) Optimism scores (Y) 17.00 15.00 10.00 20.00 15.00 19.00 22.00 19.00 19.00 20.00 24.00 22.00 a. What is the Pearson’s correlation (r) between resilience and optimism? b. Is the relationship positive or negative? c. According to this data, what happens when a person has higher levels of optimism? d....
Scores on the first half of a 60-item test are correlated with scores on the second half of the same test, yielding a correlation coefficient of 0.82. What is the reliability for the full test? a. 0.82 b. 0.90 c. 1.00 d. 1.64
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.
6. In one class, the correlation between scores on the final and the midterm was 0.50, while the correlation between the scores on the final and the homework was 0.25. True or false, and explain the relationship between the final scores and the midterm scores is twice as linear as the relationship between the final scores and the homework scores. 7. The figure below has six scatter diagrams for hypothetical data. The correla- tion coefficients, in scrambled order, are: -0.85...
Which of the following may have an adverse effect on a correlation coefficient? Select one: a. too many people in your experiment b. a negative relationship between your X and Y variables c. the scores on one variable have larger numbers than the other variable d. restricting the range of possible scores e. None
(True or False) If the correlation coefficient is positive, then above-average values of one variable are associated with above-average values of the other.
1. Should stocks in the same industry have a higher or lower correlation than different industry stocks? Explain.