Compute Karl Pearson's coefficient of correlation from the following dataand comment on its value :1719233540424854Y :0213112413501837

Answered: Compute Karl Pearson's coetficient 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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Q. 1 Given below is an output of Pearson correlation. Report direction, strength of relationship between height and shoe size and whether this relationship is significant or not. (2) Correlations age height shoesize age Pearson Correlation 523 .244 Sig. (2-tailed) .121 .496 10 10 10 height Pearson Correlation 523 1 388 Sig. (2-tailed) 121 .268 N. 10 10 10 shoesize Pearson Correlation 244 388 Sig. (2-tailed) 496 268 10 10 10
A study was done to look at the relationship between number of vacation days employees take each year and the number of sick days they take each year. The results of the survey are shown below. Vacation Days 11 11 15 4 13 0 3 3 0 5 3 7 Sick Days 3 -0 0 3 0 7 9 9 6 4 10 5 Find the correlation coefficient: r=r= Round to 2 decimal places. The null and alternative hypotheses for correlation are:H0:H0: == 0H1:H1: ≠≠ 0 The p-value is: (Round to four decimal places) Use a level of significance of α=0.05α=0.05 to state the conclusion of the hypothesis test in the context of the study. Select from the following answers. There is statistically significant evidence to conclude that an employee who takes more vacation days will take fewer sick days than an employee who takes fewer vacation days . There is statistically significant evidence to conclude that an employee who takes more vacation days will take more sick days than an employee who takes fewer vacation…
1. Find Karl Pearson's co-efficient of correlation of the following data. Age of husband (x): 20 Age of wife (v): 22 23 25 25 28 29 30 30 34 18 20 22 24 21 26 26 25 27 29
What is Correlation ? The following marks have been obtained by a class of 7 students in Economics and History. Find Karl Pearson's Coefficient of Correlation from this data : 66 90 89 55 58 44 42 Economics: 58 76 65 58 53 49 56 History:
Subject Extroversion Neuroticism 1 43 49 2 46 53 3 48 67 4 48 57 5 48 56 6 50 48 7 51 60 8 51 41 9 53 51 10 58 47 11 62 41 12 63 51 13 63 30 14 63 28 15 67 55 16 67 47 17 67 39 What is the correlation coefficient for the association of extroversion and neuroticism in personalities.xls? What is the value of Fisher's z-transforation of the correlation coefficient for the association of extroversion and neuroticism in personalities.xls? What is the standard deviation of the sampling distribution of Fisher's z-transformed correlation coefficient for the association of extroversion and neuroticism calculated from the data in personalities.xls?
A study was done to look at the relationship between number of movies people watch at the theater each year and the number of books that they read each year. The results of the survey are shown below. Movies 10 4 10 4 0 2 10 7 5 7 8 8 Books 4 8 9 10 16 15 7 7 9 6 5 9 Find the correlation coefficient: r=r= Round to 2 decimal places. The null and alternative hypotheses for correlation are:H0:H0: ? ρ r μ == 0 H1:H1: ? μ ρ r ≠≠ 0 The p-value is: Round to 4 decimal places. Use a level of significance of α=0.05α=0.05 to state the conclusion of the hypothesis test in the context of the study. There is statistically insignificant evidence to conclude that there is a correlation between the number of movies watched per year and the number of books read per year. Thus, the use of the regression line is not appropriate. There is statistically significant evidence to conclude that a person who watches fewer movies will read fewer books than a person who watches fewer…
Suppose the researcher also expected a relationship between the IQ scores of fathers and their sons. Use the following IQ scores to test this theory. Family Father Son 120 121 110 105 120 125 92 87 85 92 72 90 107 110 115 122 155 133 90 123 What is Pearson correlation coefficient (r) for the data above? A .788 B .892 C .714 D 1.0
The following data gives the number of hours 7 students spent studying and their corresponding grades on their midterm exams. 3.5 4 4.5 5.5 6 84 90 93 99 Answer How to enter your answer (opens in new window) Hours Spent Studying 0.5 3 Midterm Grades 69 72 75 Step 1 of 3: Calculate the correlation coefficient, r. Round your answer to six decimal places. Copy Data Tables Keypad Keyboard Shortcuts
The following table gives the marks obtained by a student in ten tests during the year. Calculate the correlation coefficient. Test No. : 1 2 3 4 5 6 7 8 10 Marks in Accounts : 77 54 27 52 14 35 90 25 56 60 Marks in English : 35 58 60 40 50 40 35 56 34 42

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Compute Karl Pearson's coetficient of correlation from the following data and comment on its value : 17 19 23 35 40 42 48 54 Y : 02 13 11 24 13 50 18 37