If S=234, S. XY = 244 S=255, then the value of correlation coefficient 'r' is XX YY

Q: Suppose the coefficient of correlation for two variable is r= -0.811. O 0.811 O -0.811 O 0.658 O Not…

A: Given, Coefficient of correlation (r)=-0.811 Coefficient of determination (r2)=?

Q: For a set of values of x and y, if Pearson's Correlationris equal to - 0.97, it means: x and y have…

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Q: A set of n = 15 pairs of scores (X and Y values) produces a correlation of r = 0.40. If each of the…

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Q: The correlation coefficient between people who get less than six hours sleep at night and caffeine…

A: HERE GIVEN CORELATION COEFFICEINT BETWEEN CAFINE INTAKE AND SIX HOURS SLEEP IS 0.39

Q: Suppose the Pearson correlation between X and Y is -0.4567. Now I create a new variable Z = 4 - 8*X,…

A: Correlation between X and Y = -0.4567 So, ρXY = -0.4567 Now, Z = 4-8X Hence, Var(Z) = 82 Var(X)…

Q: If the correlation coefficient is close to -1, the linear relationship between two variables is very…

A: We have to check weather the given statement is True or False.

Q: A computer while calculating the correlation coefficient between two variates X and Y obtained the…

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Q: A perfect straight line sloping downward would produce a correlation coefficient equal to: O A. -1…

A: Given that ; A perfect straight line sloping downward would produced a correlation…

Q: If the correlation coefficient between two variables is 0.93, then the corresponding coefficient of…

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Q: The value of correlation coefficient between variables X and Y lies between: A. 1 and 2 B. 0 and 1…

A: We have to identify correct option.

Q: Suppose the correlation value between two variables is calculated to be 0.818. How would you…

A: Concept: Correlation can be defined as the linear relationship between the two quantitative…

Q: A data set with a correlation coefficient of 0.05 means that the variables have_ correlation. -

A: Coefficient correlation : The correlation coefficient is a statistical measure of how strong a…

Q: In order to indicate a strong correlation between variables, the correlation coefficient will be…

A: In this case, we need to identify the correct option.

Q: A set of n=4 of X and Y scores produces a Pearson correlation of r=0.20.The x values vary from…

A: Given that A set of n=4 of X and Y scores produces a Pearson correlation of r=0.20.The x values vary…

Q: If the Pearson correlation (r=0.5) then: There is about 75% of the variation of dependent variable…

A: From the given information, the Pearson correlation is r=0.5. Consider, the coefficient of…

Q: If the coefficient of correlation between two variables is -0.6, their coefficient of determination…

A: Given: Correlation coefficient (r) = -0.6

Q: If correlation of X and Y is equal to 0, prove that correlation of x< and y may not be equal to 0.

A: Correlation: Correlation analysis is used to measure the strength of the association between…

Q: If the relationship of the variables is as: increasing of one variable decreases the other and they…

A: Correlation is defined as the linear relationship between the two variables. The range of the…

Q: Suppose IQ scores were obtained from randomly selected twins. For 20 such pairs of​ people, the…

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Q: "What is the correlation coefficient for this condition? X is the voltage across a resistor, Y is…

A: We have given that the statement about to the correlation condition of X and Y.   Note: According to…

Q: A set of n = 15 pairs of scores (X and Y values) produces a correlation of r = 0.30. If each of the…

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Q: The coefficient of correlation of the two variables a) is negative. b) is positive. c) should have…

A: The given plot shows the scatterplot.

Q: The higher the absolute value of the correlation coefficient, the less accurate the prediction is of…

A: The relationship between the two numerical or quantitative variables is explained by the correlation…

Q: if the correlation coefficient r is equal to 0.568, find the coefficient of nondetermination.

A: Correlation coefficient quantifies the strength and direction of relationship between variable. The…

Q: If o, = 0, - = o and the angle between the regression lines is tar . Find the coefficient of…

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Q: A data set with a correlation coefficient of 0.05 means that the variables have ___ correlation.

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Q: If the Pearson Product Moment Correlation Coefficient shows zero value, this definitely means that…

A: If Pearson correlation coefficient is equal to zero then it indicates that variables are uncollected…

Q: The correlation coefficient (r) between the number of volunteers x and the number of bags of trash…

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Q: If the coefficient of determination is equal to 1, then the correlation coefficient A. must also be…

A: Coefficient of determinations r2: The coefficient of  determination  determines the percentage of…

Q: For a correlation of -.64 between X and Y, each 1 _SD change in Zx corresponds to a predicted change…

A: It is provided that the correlation between X and Y is -0.64. So, r = -0.64.We have the relation, Zy…

Q: What is indicated by a Pearson correlation of r = +1.00 between Xand Y? Each time X increases, there…

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Q: In order to indicate a strong negative correlation between variables, the correlation coefficient…

A: Definition used -                 Negative correlation -                             From the…

Q: If the correlation coefficient between variables X and Y is roughly zero, then ______. Y is…

A: If the correlation coefficient of two variables is zero, there is no linear relationship between the…

Q: Given that the linear correlation coefficient r is found to be 0.867, what is the proportion of the…

A: Here Given linear correlation coefficient =r =0.867

Q: If variable X remains constant as variable Y decreases, the correlation is said to be: zero negative…

A: We have to find  correct answer.

Q: Suppose a positive linear correlation is found between two quantities. Does this mean that one of…

A: The positive correlation is a relationship between two variables in which both variables move in…

Q: For a correlation of -64 between X and Y, each1-SD change in zx corresponds to a predicted change of…

A: For each standard deviation increase in , then Y changes by r Standard deviations.

Q: Suppose that there is a correlation of r= 0.41 between the amount of time that each student reports…

A: It is given that the correlation coefficient between the amount of time that each student reports…

Q: the correlation coefficient between two variables x and y obtained the folfowing constants: N=25,…

A: Given that  the correlation coefficient between two variables x and y obtained the following…

Q: If someone owns an electric car it is represented by a one  and if they don’t it is represented by a…

A: Given:   Number of cars (y) Salary (x) xy y^2 x^2   0 80000 0 0 6400000000   0 17000 0 0…

Q: Imagine that there is a correlation of r = 0.65 between variable X and variable Y.  Based on the…

A: Given information r = 0.65, ZX = 1.5

Q: In order to indicate a strong correlation between variables, the correlation coefficient will be O…

A: In order to indicate a strong correlation between, the correlation coefficient will be

Q: found to be 0.5. It was later discovered that the difference in ranks in two subjects obtained by…

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Q: A researcher obtains a Pearson correlation of r= 0.60 for a sample of n= 6 pairs of X and Y scores.…

A: Given Pearson correlation coefficient = r = 0.6sample size n = 6.To test the significance of the…

Q: If the variables have a negative association, then their correlation must be: A. less than-1. OB.…

A: Given: Variable have negative association. So it's value is always less than zero.

Q: Suppose a friend of yours computes a correlation coefficient of +1.10 and comes to you for advice as…

A: Correlation is defined as the linear relationship between the two variables. The range of the…

Q: If the coefficient of determination is 0.81, the correlation coefficient %3D

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Q: If there is a very strong correlation between two variables, then the correlation coefficient must…

A: Correlation provides the linear relationship between two variables and it does not take into…

Q: correlation coefficient is said to be 0.95 would this be co

A: Correlation is defined as the linear relationship between the two variables. The range of the…