10. Calculate the coefficient of correlation for the following data:5001000 1500 2000 2500 30003500y100200300400500600700

From the provided information, Hours (x) Scores (y) 500 100 1000 200 1500…

Answered: 10. Calculate the coefficient of…

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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6. Which of these relationships would be better described with a Spearman's rank coefficient than with a Pearson's coefficient? a. The association between income and educational attainment (measured in years of school) b. The association between hours of sleep and score on an exam C. The association between years aged and price of wine d. The association between ice cream sales and crime rates e. The association between number on NY Times Best Seller List and copies of book sold
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.
9. 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 x
We will rank the y-values of the following data set: x y -5 2.8 -2.9 -1.7 -1.2 3.9 0 2.7 1.3 -6.6 2.2 -6.9 3.3 5.9 Fill in the following table: x y x-rank y-rank -5 2.8 1 -2.9 -1.7 2 -1.2 3.9 3 0 2.7 4 1.3 -6.6 5 2.2 -6.9 6 3.3 5.9 7
For the following pairs of data points (10, 100), (8, 120), (5, 200), (4, 200), (10, 90), (7, 110) , and (6, 150) , the value of bo is A 186.9657 b 268.6957 C 286.5769 d 168.6957
Use the data table below to answer the questions regarding the relationship between sit-ups (X) and pull-ups (Y). Subject Y 1 20 15 2 15 10 3 34 20 4 18 17 5 23 7 1. Subject X2 Y Y2 XY 1 20 400 15 225 300 2 15 225 10 100 150 3 34 1156 20 400 680 4 18 324 17 289 306 23 529 7 49 161 110 2634 69 1063 1597 5E
1. Calculate the correlation coefficient 2. How are the fat and sodium contents associated?
We will rank the y-values of the following data set: x y 3 -7.5 4.3 6.5 4.9 -7.5 6.9 -0.1 8 4.8 9.2 -7.3 10.1 -3 10.8 2.5 11.9 -13.1 Fill in the following table: x y x-rank y-rank 3 -7.5 1 4.3 6.5 2 4.9 -7.5 3 6.9 -0.1 4 8 4.8 5 9.2 -7.3 6 10.1 -3 7 10.8 2.5 8 11.9 -13.1 9
5. Draw a histogram for the following data. Weekly wages in Rupees Number of workers 10-15 7 15-20 19 20-25 27 25-30 15 30-40 12 40–60 12 60–80 8.

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10. Calculate the coefficient of correlation for the following data: 500 1000 1500 2000 2500 3000 3500 y 100 200 300 400 500 600 700