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…
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- When the value of the correlation coefficient between heating time (X) and temperature (Y) obtained positive means (The faster the heating time and the lower the temperature) (The shorter the heating time, the lower the temperature) (The faster the heating time and the higher the temperature) (other)The Pearson's r correlation between two variables X and Y is calculated to be 0.6. What can be concluded from this correlation coefficient about the relationship between X and Y?Imagine that there is a correlation of r = 0.65 between variable X and variable Y. Based on the correlation between these two variables (and only these two variables), what is a person's predicted value on variable Y, when his X value on variable X is a z score of 1.5? Please provide your answer as a z score with a minimum of three decimal places.
- Suppose IQ scores were obtained from randomly selected twins. For 20 such pairs of people, the linear correlation coefficient is 0.930 and the equation of the regression line is y=−10.69+1.11x, where x represents the IQ score of the twin born first. Also, the 20 x values have a mean of 98.28 and the 20 y values have a mean of 98.5. What is the best predicted IQ of the twin born second, given that the twin born first has an IQ of 92? Use a significance level of 0.05.LOADING... Click the icon to view the critical values of the Pearson correlation coefficient r.Question content area bottomPart 1The best predicted IQ of the twin born second is enter your response here.(Round to two decimal places as needed.)Suppose a friend of yours computes a correlation coefficient of +1.10 and comes to you for advice as to how to interpret it. What would you tell your friend?Suppose Y1, Y2 and 3Y are not correlated variables, however, have the same standard deviation. Show that correlation between Y1 + Y2 and Y2 + Y3 is equal to half. Whether correlation coefficient is zero or not
- A set of n = 5 pairs of X and Y values has SSX = 10, SSY = 40 and Sum of product ()= 10. For these data, the Pearson correlation is _____.We can use lenght of a man's hand span to predict his height, with correlation coefficient of r = 0.60. If we change out measurements from sm to m, the new corrrelation will beImagine a study where all our data (x, y) falls perfectly on a flat and straight horizontal line. If we calculated the correlation coefficient r for this data, what would it be? What would that mean for our hypotheses?
- If there is a very strong correlation between two variables, then the correlation coefficient must be A. much larger than 0, regardless of whether the correlation is negative or positive B. any value larger than 1 C. much smaller than 0, if the correlation is negative D. None of these alternatives is correct.Suppose the Pearson correlation between X and Y is -0.4567. Now I create a new variable Z = 4 - 8*X, then what is the Pearson correlation between Z and Y?If the correlation coefficient r is equal to 0.321 , find the coefficient of determination