6. The following sample contains the scores of 6 students selected at random inMathematics and English. Use the scores in English as the dependent variable Y.Mathematicsscore (X)English score(Y)7074928074 65 8384 63 87 78 90Σ æ=464, Σy=476, Σ w2 -36354, Σy-X-38254, Σæy=36926.c) Find the sample correlation coefficient r and interpret. O- 0.2397 and the relationship between x and y is weak0.2397 and the relationship between x and y is strongO-0.2397 and the relationship between x and y is strong0.2397 and the relationship between x and y is weak

Answered: 6. The following sample contains the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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a. Calculate the correlation coefficient r, letting Row 1 represent the x-values and Row 2 the y-values. r = ____ b. Calculate the correlation coefficient r, letting row 2 represent the x-values and row 1 the y-values. r = _____ c. What effect does switching the variables have on the correlation coefficient?
The table list chest sizes and weights of anesthetized bears. Chest (in). 49 35 41 41 63 57 Weight (Ib) 348 166 320 262 390 290 Compute the correlation coefficient, r.
The correlation between midterm and final grades for 300 students is 0.620. If 5 points are added to each midterm grade, the new r will be: a. 0.124 b. 0.57 c. 0.62 d. 0.744
First Paired Data Set 4 10 13 11 19 21 36. Use the First Paired Data Set. Find the correlation coefficient r. A. 0.862 B. 0.943 C. 0.725 D. 0.607
The following table shows the weekly sales, test scores & achievement ratings of 5 salespersons working for a local car dealership: Salesperson Weekly Sales (Y) Sales Aptitude Test Score (x1) Mechanical Achievement (x2) Walters 11 10 6 Sullivan 5 4 2 Obmer 8 1 4 Smith 12 7 5 Jones 4 3 1 Brown 6 5 3 Black 7 2 2 Calculate the multiple correlation coefficient.. Select one: a. 0.925 b. 0.952 c. 0.295 d. 0.592
Use Spearman rho formula to determine if there is a correlation between the English and Math score of 10 students English 86 76 46 71 82 64 58 80 75 61 Math 66 80 40 60 65 56 58 77 67 81 Ho: Ha: Calculated Value: Tabulated Value: Decision: Conclusion:
The data obtained in a study on the number of absences in virtual class and the final grades of seven randomly selected students from a mathematics class. The data are shown below. To determine the significance of the correlation coefficient at 0.05 level of significance, what is the calculated or computed value (CV)? Number of absences x Final in a virtual class grade y 82 6 86 15 43 9. 74 58 5 90 78 a. -1.59 b. 2.32 C. -2.32 d. 1.59
4. Consider the following data: XINMASSN 1 2 3 4 5 6 7 y 6 7 5 4 3 1 2 a) Make a scatterplot of these data. The variable labeled "x" should be plotted along the x-axis. Describe the pattern. b) Find the correlation coefficient for these data.
The following table shows the annual family income of the students enrolled in the JRMSU-TC and their general weighted average (GPA). Students Annual Family Income (Pesos) General weighted average (GPA) % 1 85 100,000 50,000 2 79 3 150,000 4 180,000 5 300,000 6 500,000 7 230,000 2. Determine the correlation coefficient. 82 85 93 92 95
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23. Find the value of the linear correlation coefficient r. Show work. The paired sample data below consists of the temperatures on randomly chosen days and the amount a certain kind of plant grew in millimeters. Temperature 62 76 50 51 71 46 51 44 79 Growth 36 39 50 13 33 33 17 6 16

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