Please help The Pearson's correlation coefficientA. varies between 0 and ±1B. is negative if the variables areinversely relatedC. can be very high, and yet theremay be no causal relationshipbetween the variablesD. All of these.

Pearson's correlation is measure of strength of linear relationship between two variables

Answered: The Pearson's correlation coefficient O…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.5: Correlation And Causation

Problem 14PPS

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A positive correlation coefficient means that there is a relationship between two variables. O Zero Direct O Inverse O Proportional
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
If Ex=12, Ɛy=42, Ex²=46, Ɛy²=542, Exy=157and n =4, find the correlation coefficient,
If o̟ = 0,-0 and the angle between the regression lines is tar! Find the 3 0.. = coefficient of correlation.
1) Which of the following represents the closest relationship between two variables? Or= -0.50 r=0.00 Or=0.50 Or=-0.65 2) If values of one variable consistently go down when values of a second variable go up, there is a_______ between the two variables. -Negative correlation -Positive correlation - Zero -Need more information to tell
Which of the following is true of the correlation r? It measures the strength of the straight-line relationship between two quantitative variables. It cannot be greater than 1 or less than 1. A correlation of +1 or –1 can only happen if there is a perfect straight-line relationship between two quantitative variables. Correlation is 0 only when there is no association between the variables. Correlation changes when the explanatory and response variables are switched.
If the coefficient of correlation between x and y is close to 1, this indicates that: OA. y causes x to happen OB. there may or may not be any causal relationship between x and y OC. x causes y to happen OD. both A and B are correct answers If the coefficient of correlation is -0.60, then the coefficient of determination is: OA. -0.60 OB. 0.40 OC. -0.36 OD. 0.36
Suppose that two variables, x and y, have a correlation coefficient of −0.77. Which of the following statements are true? You must make a selection for each option. Click once to place a check mark for correct answers and click twice to empty the box for the wrong answers. check all that apply There is a strong relationship between these two variables. As x increases, y decreases. The variables have a negative linear relationship. As x increases, y increases. There is a weak relationship between these two variables.
1) Match each of the five scatterplots to the appropriate correlation coefficient and equation of regression line. Explain how you know that you have made a correct match. a. r= 0.83, y= -2.1 + 1.4x d. r= -0.83, y = 11.8 – 1.4x b. r= -0.31, y = 7.8 – 0.5x e. r= 0.41, y=1.4 + 1.4x c. r= 0.96, y= -2.1 + 1.4x Scatterplot 1 Scatterplot 2 Scatterplot 3 Scatterplot 4 Scatterplot 5
The coefficient of correlation will be zero if if the relationship between two variables x and y is non-linear. if there is no linear relationship between two variables. if the covariance between two variables x and y is 1. None of the above.

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The Pearson's correlation coefficient O A. varies between 0 and ±1 B. is negative if the variables are inversely related C. can be very high, and yet there O may be no causal relationship between the variables O D. All of these.