2. If the coefficient of correlation is a positive value, then

Q: If X and Y are independent the correlation cofficient between X and Y is equal zero

A: If x and y are independent, means they are uncorrelated , correlation coefficient is zero. Given…

Q: 1. State whether the scatter diagram shows strong positive correlation, weak positive correlation,…

A: Since we know that Positive correlation :- Both variable move in a same direction in other words as…

Q: 3. If the correlation coefficient is -0.03, is its relationship considered to be strong positive,…

A: Correlation: The extent linear relation between the two variables is called as correlation. Positive…

Q: Can you think of other correlations in life that are interpreted mistakenlyas causal?

A: Correlation and causation are terms that are mostly misunderstood and often used interchangeably.…

Q: If Data A has a correlation coefficient of r= -0.991, and Data B has a correlation coefficient of r=…

A: It is given that Data A has a correlation coefficient of r = -0.991. It is given that Data B has a…

Q: What does it mean if a Pearson correlation, r between variable X and variable Y is negative?

A: Correlation between two variables measure the strength and direction between two variables. It…

Q: A coefficient of correlation of -1 means that there is no linear correlation between two variables.…

A: According to the given information, we have Correlation coefficient, r = -1

Q: If y=3.2-7.9x, the correlation between x and y must be negative. Select one: O True False

A: It is given that  y^ = 3.2 - 7.9x

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

A:

Q: WHat is the linear correlation coefficient

A: The linear correlation coefficient is denoted by “r” and used to measure linear relationship between…

Q: If a set of data has a very weak negative correlation, the residual values will be a) Very large с.…

A: answer is D very small residual = obeserved - predicted value so for negative weak correlation it…

Q: 1) The coefficient of correlation between

A: Given :1. The coefficient of correlation between

Q: When can a correlation coefficient based on an observational study be used to support a claim of…

A: When can a correlation coefficient based on an observational study be used to support a claim of…

Q: If the correlation coefficient is 0, then there is no linear relationship between the two variables.…

A:

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: Suppose the correlation coefficient between the number of professional sports teams in a city and…

A: Let the number of hospitals be x and the number of sports team be y Therefore- x=0.72y Now for y=1,…

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 the points on the scatter plot fall almost in line, then the correlation. A. negative B.…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: If there is no linear correlation, does this mean that there is no correlation at all?

A: We know that,  If x and two variables then there is only linear correlation between X and Y.…

Q: If there is a strong negative linear correlation between the amount of money in the bank and the…

A: A strong negative correlation is when one of two variables increases in value while the other…

Q: If the coefficient of correlation between two variables is -0.93, then the percentage of variation…

A: There are two variables in this case. This is simple linear model. The value of coefficient of…

Q: In your own words, what does it mean to have a non-linear correlation?

A: Solution: First we need to know about the non-linear relationship. It is also a type of relationship…

Q: Imagine that there are only two points in a scatterplot. 7. How do you position these points so that…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Suppose that grades on a midterm and a final exam have a correlation coefficient of 0.5, and both…

A: The least square equation for the predicting grades of final exam on the basis of the grades of the…

Q: A researcher records the age and price for a group of used cars. What kind of correlation, in terms…

A: A researcher records the age and price for a group of used cars. Since we know that the price of a…

Q: If the coefficient of correlation between two variables is -0.88, then the percentage of variation…

A: We have given that,  Correlation coefficient (r) = -0.88 Then,  We will find the percentage of…

Q: Suppose it was observed that there is a correlation of r= -0.81 between a driver's age and the cost…

A: Since we know that negative correlation is defined as relationship between two variables in which if…

Q: A negative value of the correlation coefficient indicates that the variables are unrelated. O true O…

A: Negative Correlation :  If the  change in the value of one variable results in the change of value…

Q: If the value of the Pearson correlation is r = 0, then all data points on a scatterplot would fall…

A: We have to answer statement true or false..

Q: -7. If (X,Y) ~ LOGS(@), then what is the correlation between X and Y?

A: The correlation of X and Y is the normalized covariance . corr(x,y) = cov(x,y)/σxσy . The…

Q: 3. (b) The coefficient of rank correlation between the marks obtained by 10 students in Mathematics…

A: Let N be a no. of the student (N)=10  R1 is initial rank coefficient =0.5

Q: If the correlation coefficient between X and Y is equal to zero, then:

A: Given that the correlation coefficient between X and Y is equal to zero. That is,…

Q: Can the correlation coefficient be 4?

A: The range of the correlation coefficient is -1 to 1.

Q: 15. Is there a significant correlational relationship between X and Y? Yes or No

A: For the given data, we need to test for the significance of correlation between X and Y.

Q: Suppose a study finds that the correlation coefficient relating job satisfaction to salary is r=1.…

A: Given:

Q: If r= +1, the correlation is said to be a O Perfect negative correlation O Perfect positive…

A:

Q: 1- If the value of the linear correlation coeffici variables are independent.

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 17) What assumptions are required for a correlation to be a valid description of the relation…

A: Assumptions for correlation: Correlation quantifies the extent to which two quantitative variables.…

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: if the slope is negative then is the correlation coefficient also negative?

A: Given: the slope of the regression line is -ve then the correlation coefficient is -ve.

Q: Does "correlation imply causation"? Give one example in which a variable X is positively correlated…

A: Introduction: Correlation: Correlation is a measure of the strength of linear association between…

Q: Explain Graphically by drawing hypothetical disgrams when the coefficient of correlation between two…

A: The degree or extent to which two variables are linearly related or associated, is called the…

Q: If the correlation between two variables is close to Zero, the linear association between the…

A: The correlation coefficient r measures the strength and direction of the linear relationship between…

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

A:

Q: How do we decide if the correlation coefficient is close enough to ±±1 to declare that there is…

A: Introduction: The correlation coefficient, r measures the strength of linear association between two…

Q: If the correlation is 0, then there is no relationship between the two variables.

A:

Q: If we assume that the conditions for correlation are​ met, which of the following are​ true? If​…

A: Solution-: If we assume that the conditions for correlation are​ met, which of the following are​…