1. درجات The correlation coefficient is used to determine: A specific value of the y-variable given a specific value of the x-variable. A specific value of the x-variable given a specific value of the y-variable. None of these The strength of the relationship between the x and y variables. 30 1J يقوم الانتقال إلى سؤال أخر بحفط هذا الرد.

1. درجات The correlation coefficient is used to determine: A specific value of the y-variable given a specific value of the x-variable. A specific value of the x-variable given a specific value of the y-variable. None of these The strength of the relationship between the x and y variables. 30 1J يقوم الانتقال إلى سؤال أخر بحفط هذا الرد.

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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Find the correlation coefficient between x and y values given below. 2 3 5 6 12 y 20 12 10 8 7 3 Select one: a. 0.920 b. 0.898 C.-0.898 d. -0.920 е. -0.296
Solve the problem. A olothes shop owner tries to predict the winter oolection sales by displaying the coats sales (in dollars) and the outside temperature (in degrees Fahrenheit) on the following scatterplot. He calculates that the correlation between coats sales and emperature is-0.801 Suppose the variable temperature is recorded in degrees Celsius rather than in degrees Fahrenheit. What will be the correlation? 6- :- 2- 30 40 50 60 70 Temperature (F) 20 OA -0.801 OB. -0.801 F/$ OC. 18.197 F-$ O D. -0.801 F•$ OE. 0.801
19. Which statement is correct? (A) The correlation coefficient and the intercept of the regression line always have the same sign. (B) The slope and the intercept of the regression line always have the same sign. (C) The correlation coefficient and the intercept of the regression line always have the same sign. (D) The correlation coefficient and the slope of the regression line always have the same sign. If you feel the answer is none of the choices given, submit no answer to the question.
16)
Somebody has calculated a correlation coefficient (r) of 0.83 for these variables. In the space 15) below, explain (using sentences for direction, and the appropriate calculation for strength) what this correlation coefficient means in terms of the relationship between the variables. ANSWER - 16) does/does Using a few sentences, provide your assessment of how the correlation coefficient in Q15 not match the relationship between these variables as shown on the scatterplot. ANSWER -
I need an introduction with interpretation to understand the attached file. Thanking you
Right arm 102 101 94 79 79 Left arm 175 169 182 146 144 If the sample data were to result in the scatterplot shown here, what is the value of the linear correlation coefficient r?
Q5/A// Determine the correlation Company A В C coefficient for the data X 73 30 21 18 Y 7 8. 9. D/ID
The correlation coefficient between the variables x and y is r=0.78 . If Sigma x=1.56, Sigma y=2.00, x bar=12,y bar=22 Find the equations of the registration lines Y on X
Use the value of the linear correlation coefficient r to find the coefficient of determination and the percentage of the total variation that can be explained by the linear relationship between the two variables. r= 0.279 What is the value of the coefficient of determination? 2= (Round to four decimal places as needed.) Enter your answer in the answer box and then click Check Answer. Check Answer Clear All part 1 remaining MacBook Pro F12 --- FIO F7 F8 F9 F5 esc F1 F2 & @ $ 6. 7 8 9 1 2 3 4 P Y Q tab K A S F + ||
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Q1. A psychologist conducted a study on the relationship between introversion and shyness. The values are results for scales of introversion and shyness. High positive scores on each scale indicate high introversion or shyness; and high negative scores indicate low introversion or shyness. Data collected from 10 people as follows: Introversion 4 -7 -1 0 6 7 -4 -9 -5 8 Shyness 11 -7 -1 -3 0 7 -1 -8 -1 5 a) Compute the correlation coefficient relating introversion and shyness scores. b) Find the regression equation which predicts introversion from shyness. c) What introversion score would you predict from a shyness score of 7?