The ranking of ten students in two subjects A and B areas follows :А:354710216В:6 49812310 5 7What is the co-efficient of rank correlation ?

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Answered: The ranking of ten students in two…

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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Example 21. Ten competitors in a beauty contest were ranked by three judges in the following order : First Judge: 1 5 10 3 2 4 Second Judge 3 5 8 4 7 10 2 1 6. 9 Third Judge 4 1 2 3 10 7 Use the method of rank correlation to determine which pair of judges has the nearest approach to common tastes in beauty. 00
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
A national study conducted by a market research firm, evaluated the top technology companies and their reputations. The following shows how 10 technology companies ranked in reputation and how the companies ranked in percentage of respondents who said they would purchase the company's stock. A positive rank correlation is anticipated because it seems reasonable to expect that a company with a higher reputation would have the more desirable stock to purchase. Company Company A Company B Company C Company D Company E Company F Company G Company Hi Company I Company J Ho: Ps ≤0 Ha: Ps > 0 O Ho: P₂ > 0 H₂: Ps = 0 Reputation Stock Purchase O Ho: Ps+0 Ha: Ps = 0 1 O Ho: Ps 20 Ha: Ps <0 2 3 4 5 6 7 8 9 10 3 1 4 2 9 5 10 6 (a) Compute the rank correlation between reputation and stock purchase. (Round your answer to three decimal places.) 's = 0.709 ✓ (b) Test for a significant positive rank correlation. State the null and alternative hypotheses. Ho: P₂ = 0 Ha: Ps0 7 8 Find the value of the…
A food truck owner recorded the temperature at noon, in degrees Fahrenheit, and the number of bowls of soup sold during the lunch hour for a random sample of 5 days. The data are shown in the following table. Temperature (degrees Fahrenheit) 57 75 43 68 67 Number sold 17 12 20 8 13 The mean temperature of the sample is 62 degrees Fahrenheit, and the mean number sold is 14. What is the correlation between the temperature and the number sold? A -0.85 B -0.68 0.68 D 0.73 E 0.85
Two 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
A nutritionist collects data from 25 popular breakfast cereals. For each cereal, the number of calories per serving is plotted on the x-axis against the number of milligrams of sodium on the y-axis. The value of r for the resulting scatterplot is 0.83. How would the value of the correlation coefficient, r, change if sodium was plotted on the x-axis and calories plotted on the y-axis? The value of r would increase. The value of r would not change. The value of r would change to –0.83. The value of r could increase or decrease, depending of the strength of the new relationship.
2.) The table shown below are the raw scores obtained by eight (8) students. Is there a relationship in their scores in Mathematics and in Biology? Use Pearson Product-Moment Coefficient of Correlation to establish the relationship. Student 1 3 4 6. 8. Mathematics (x) 6. 3. 4 3 Biology (y) 8. 3. 7 4
A test is being designed to compare the wearing quality of two brands of tires, say brand A and brand B. Six automobiles will be selected and equipped with the new tires from both brands and driven under normal conditions for 1 month. A measurement will be taken to determine how much wear took place on a scale from 0 to 200. Below is a table of the paired data collected from the 6 cars in the test. [BrandA BrandB] 125 64 64 65 94 103 38 37 90 102 106 115 Conduct a hypothesis test to determine whether the mean of the difference population is 0 at a significance level of a =. State your conclusion.
5. Ten competitors in a beauty contest are ranked by three judges in the following order. Judge I: 1 6 5 10 3 2 4 9 7 8 CS Scanned with CamScanner

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The ranking of ten students in two subjects A and B are s follows: А: 3 5 4 7 10 2 1 6 6 4 9 What is the co-efficient of rank correlation ? В: 8 1 2 3 10 5 7