3. Coefficient of correlation = - 0.25 means (a) Strong positive correlation (b) Weak positive correlation (c) Strong Negative correlation (d) Weak Negative correlation

Q: For perfect correlation, the coefficient of correlation should be +1 +1 -1

A: The Pearson correlation coefficient used to determine the relationship between two quantitative…

Q: The correlation coefficient indicates how strongly the independent variable affects the dependent…

A: Correlation coefficient: The population linear correlation coefficient is denotes as ρ, which…

Q: What information is provided by the sign (+ or -) of the Pearson correlation? Give an example of a…

A: The sign in Pearson correlation describes the direction of the relationship between two variables.…

Q: hp mpg 1.000000 -0.866756 -0.772352 mpg wt wt -0.866756 1.000000 0.641831 hp -0.772352 0.641831…

A: Solution: The correlation matrix for mpg, wt and hp is given.

Q: I want explain this correlations table between (x1 and x2) , (x3 and x1) , (x3 and x2) Dependent or…

A: The sample correlation coefficient between the variables x1 and x2, obtained using the sample size…

Q: How are linear correlation and rank correlation alike? (Try to avoid using the word "correlation" to…

A: Both  linear correlation and rank correlation represents the direction and the strength of the…

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: What are the key properties of correlation coefficient?

A: Correlation is measure of linear association between two quantitative variables. The variables are…

Q: Describe about the Homoscedasticity as correlation coefficient assumption.

A: Solution: A correlation coefficient is a statistical measure of the degree to which changes to the…

Q: True or false: If the correlation coefficient between two variables is 0, then there is no linear…

A: When there is no linear association between the two variable, then the correlation coefficient…

Q: What is the best estimate for the linear correlation coefficient and what is the value of r ?…

A: Best estimate is decided by looking at scattered plot Here best estimate is r=-1

Q: What does it mean to say that the linear correlation coefficient between two variables equal 1?…

A: What does it mean to say that the linear correlation coefficient between two variables equal 1? It…

Q: True or false The correlation coefficient of 0.5 is stronger than a correlation coefficient of -0.8

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

Q: explain spss model

A: Introduction Pearson's r ranges from -1 to +1 where -1 shows a perfect -ve relationship, 0 shows no…

Q: True or False: In a linear correlation testing, any positive value for the linear correlation…

A: It is an important part of statistics. It is widely used.

Q: How do you determine if a strong positive or negative correlation exists between two variables using…

A: Correlation is a measure that indicates the strength and direction of association between two…

Q: Consider the set of pairs ((x. y)} of pairs shown in the following figure, which refers to two…

A: Correlation between two variables shows three types of association between variables. They are…

Q: correlation coefficien

A: It is asked to discuss the strengths and weaknesses of the correlation coefficient. The coefficient…

Q: True or False: Collinearity is present when there is not a high degree of correlation between any of…

A: Collinearity is present when there is not a high degree of correlation between any of the…

Q: What is the Numerical Value of correlation coefficient?

A:

Q: The data for the students Number of study hours \(x\) and Grde Points Average \(y\) 9 6 7 12 2.7 3.3…

A:

Q: Because a partial correlation considers the influence of a third variable, it is possible to have a…

A: From the above question Because a partial correlation considers the influence of a third variable,…

Q: 20. A newspaper article claims that the acad lated to the rank of its football team. From a sample…

A: Solution: According to the guidelines first three subparts should be answered when multiple subparts…

Q: a pearson correlation value (r) indicates the exact degree of accuracy in which a researcher can…

A: Pearson Correlation Coefficient r is a measure which indicates the strength of a linear association…

Q: Describe the relationship between two variables when the correlation coefficient ris near 0. no…

A: The correlation coefficient, r, between two variables is near 0.

Q: Define “correlation coefficient”

A: Correlation: Correlation a measure which indicates the “go-togetherness” of two data sets. It can be…

Q: (c) Find the value of the correlation coefficient between systolic blood pressure and diastolic…

A: (c) Let x be the systolic blood pressure, and y be the diastolic blood pressure. The sums are, x…

Q: If the variance of the sum is Var(X+Y) = 6 and Var(X) = Var(Y) = 4, then what is the correlation…

A: given data  Var(X+Y) = 6 Var(X) = Var(Y) = 4 corr(X,Y) = ?

Q: A study was done to look at the relationship between number of lovers college students have had in…

A:

Q: How does interpretation of correlation coefficient done?

A: The correlation coefficient is used to define a linear relationship between independent and…

Q: A correlation between two variables is spurious when the correlation disappears after adding a…

A: Given statement: A correlation between two variables is spurious when the correlation disappears…

Q: 22) A correlation of -0.9 indicates a __________ relationship between the variables.

A: we know that correlation coefficient (r) always lies between -1 and +1i.e -1≤r≤11)if r=-1 it means…

Q: the strength of correlation is indicated by: both (a) and (b) (B) its sign (+ or -) None of the…

A: the strength of correlation is indicated by

Q: w would you describe a correlation of -1? - There is no relationship between x and y. - There is a…

A: Correlation tells how the variables are linearly related with each other. It represents the…

Q: What does a correlation coefficient of 0 imply?

A: The question is about correlation Introduction : Correlation coefficient : 1 ) The correlation…

Q: If r = +0.2 for 'Age' versus 'Hours spent on social media', what is your conclusion? There is a…

A: The correlation shows relationship between 2 variables.

Q: What is the importance of correlation coefficient?

A: Correlation coefficients are used to measure the strength of the relationship between two variables.…

Q: x 0.1 1.7 2.3 3.5 4.9 5.7 6.87.4 8.59.2 10.9 11.5 12.3 13.2 14.7 y 13.1 12.2 10.9 10 11.27.79.8…

A: Given Data : Lets assume : X: X ValuesY: Y ValuesMx: Mean of X ValuesMy: Mean of Y ValuesX - Mx…

Correlation

Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.

Linear Correlation

A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related. 

Regression Analysis

Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.