5. Calculate Karl Pearson's co-efficient of correlation. x: 1 2 3 4 6. 7 y: 3 8 19 11 13
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- runs 8.17. Compute Karl Pearson's coefficient of correlation between X and Y from the following observairons. X: 1 3 4. Y: 1 4 9. 16 Is the correlation coefficient equal to unity ? If not, why not ?Q19. The diagram below shows a scatter diagram of values of the variables x and y. Which one of the following is the most appropriate value of the correlation coefficient? Α.-0.5 В. 0.0 С. 0.5 D. 0.95.Which of the following best describes the Pearson correlation for these data? X Y 2 5 5 1 3 4 4 2
- Shown below is a scatterplot of Y versus X. -10 -20 -30 -40 -50 10 15 20 25 Which choice is most likely to be the correlation coefficient between X and Y? -0.99 0.99 0.10 -0 109. Tell whether the correlation coefficient would be closest to -1, 0 or 1. a. b. с. 150 150 150 100 100 100 50 50 50 0 2 4 6 x 0 2 4 6x 0 2 4 6 xTwo separate tests are designed to measure a student's ability to solve problems. Several students are randomly selected to take both tests and the results are shown below. Test A (x) 43 65 73 34 99 78 65 Test B (y) 39 60 62 20 85 70 54 1. Calculate r, the linear correlation coefficient. Identify the values for each part below. Part a. The value of n Part b. The sum of the x-values Part c. The sum of the y-values Part d. The sum of the x-squared values Part e. The sum of the y-squared values Part f. The sum of the (xy) values Part g. The final value of r rounded top three decimal places
- The data in the table is the number of absences for 7 students and their corresponding grade. Number of Absences Grade0 5.51 52 4.53 3.55 37 2.58 2 Step 1 of 3: Calculate the correlation coefficient, r. Round your answer to six decimal places.5. Use the following table to answer the question given below. Coefficient of correlation Dimension Sig (p) with variable F A -0.053 0.000 B 0.821 0.000 C -0.755 0.000 D 0.255 0.000 E -0.632 0.000 7 Comment on the correlation coefficient values (i.e. the relationship and its strength) given in the above table.10. The sign of the Pearson’s correlation coefficient (r) tells us what information? a. only the strength of the correlation (small, medium, or large) b. only the direction of the correlation (negative or positive) c. both the strength and direction of the correlation d. the strength, direction, and form of the correlation
- 5If the linear correlation coefficient between the weights (in kg) and heights (in inches) of 6 randomly selected males is 0.95, then 95% of the variation in weights of males can be explained by the linear correlation between height and weight? 1. True 2. False1. Compute the correlation coefficient. (Round your answer to 4 decimal places.) 2. Compute the correlation coefficient between x2 and y. (Round your answer to 4 decimal places.)The table below shows the values of x and y as follows 3 5 6. 10 12 Y 2 7 10 12 14 Find the person coefficient correlation? and it's kind? Find the sperman coefficient correlation? and it's kind?
