+ 1.2 2.7 4.4 6.6 9.5 y 1.6 4.7 9.9 24.5 39.0

Q: What is the strength/magnitude of the correlation?

A: Consider, Correlation coefficient=0.953.

Q: What is the value of my regression's intercept?

A: It is given that Correlation coefficient r = 0.4 Mean(y) = 32, SD(y) = 10 Mean(x) = 20, SD(x) = 12

Q: a. A scatterplot of Melanie's data, along with the regression line, is shown below. There is an…

A: HERE CHECK IMPACT OF OUTLIER ON CORRELATION

Q: on coefficient was –0.99. Would it be accurate to use this equ because that would be extrapolation.…

A: Given that the least squares regression line is, y=35035.71-4142.86x  The correlation coefficient is…

Q: While examining the relationship between two variables, A and B, a researcher computes a Pearson's…

A: We know that,  The Pearson's correlation coefficient values always lies between -1 to 1. Correlation…

Q: WHat is the linear correlation coefficient

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

Q: When interpreting a correlation coefficient of -0.92, you would say that there is a O strong…

A: The strength and direction of linear relationship between two variables is measured by correlation,…

Q: this scatterplot, what value of the correlation coefficient between the variables would you select…

A: There is no pattern in the given scatterplot. Thus,  there is no correlation between the variables.

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: Determine whether the correlation coefficient is an appropriate summary for the scatterplot and…

A: Here Given the scatterplot

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: A used car company believes that there is a relationship between the amount spent on advertising and…

A: The table shows the amount spent on advertising and its sales.

Q: Explain what it means when a correlation between the variables X and Y have anr2of 0.72.

A: The value of R2 is 0.72.

Q: What is one purpose of the linear correlation coefficient?

A: Linear correlation coefficient (r): It describes the strength and direction of the relationship…

Q: X y 25.6 49.2 24.2 58.4 26.9 45.4 29.6 50.6 26.3 52.9 30.1 50.2 31.1 42.5 27.3 44 38.5 38.7 Find the…

A: Given data set   x              y 25.6         49.2 24.2         58.4 26.9         45.4 29.6…

Q: In soccer, it seems reasonable to assume that the more shots a team takes, the more goals they will…

A: 1. Even if the correlation is found to be statistically significant, that does not necessarily mean…

Q: The correlation coefficient for these data is:

A: The correlation coefficient r of the data can be obtained by taking the square root of coefficient…

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

A:

Q: What is the value for r (correlation coefficient)?

A:

Q: Suppose that the correlation coefficient between study time (in hours) and GPA was found to be 0.43.…

A: Given that the correlation coefficient between study time (in hours) and GPA was found to be 0.43

Q: What is the correlation coefficient r is equal to?

A:

Q: The sign (+ or -) of the correlation coefficient tells us the _________ , where the number (0-1)…

A: Correlation: Correlation a  degree relationship between two data sets. It can be denoted as r. The…

Q: The ages​ (in years) of 10 men and their systolic blood pressures​ (in millimeters of​ mercury) are…

A:

Q: A correlation coefficient of 0.5 does not mean that 50% of the data are explained. Comment.

A: Given that  The correlation coefficient of 0.5 does not mean that 50% of the data are explained

Q: What is indicated by a positive value for a correlation?

A:

Q: The correlation coefficient may assume any value between ?

A: The correlation coefficient between the two variables gives the linear relationship between the two.…

Q: what aspects may impact the r value obtained for our correlation?

A: definition of correlation: if the change in one variable affects the change in other variable so…

Q: a. What is the value of the correlation coefficient?

A: Here use formula for correlation coefficient  Take x = midterm score y = final scores

Q: For

A:

Q: 1. A relationship between height (in inches) and arm length (in inches) was found to have a…

A:

Q: whether or not there was a linear relationship between the number of visits his soldiers made to the…

A: Given: Number of visits per week: x 1  3  4  2  3  5  Average time spent…

Q: A researcher calculates a correlation coefficient of -.38 for a sample of youths age 5 through 18…

A: From the given information,

Q: Are there ever any circumstances when a correlation such as Pearson's r can be interpreted as…

A: Correlation between any two variables tell us the linear association meaning that one variable rise…

Q: Is the correlation significant between the pair of variables with the weakest correlation? Yes, at p…

A: Consider the level of significance is 0.05.

Q: Compute the value of correlation coefficient from the following data obtained from a study or income…

A: Let x denote the Age and y denote the income. Then the correlation coefficient can be computed using…

Q: Describe the relationship between x and y in a positive correlation and in a negative correlation.…

A: The positive correlation indicates that if x increases then y will also increase. This shows that x…

Q: The symbol that is used for the linear correlation coefficient is _______.

A:

Q: What might you conclude from the correlations? There is a moderately positive relationship between…

A: From the output, The correlation coefficient between Math and SES is 0.466.

Q: When calculating a correlation coefficient between two continuous variables, the scales on which the…

A: Correlation: By correlation we mean the association or interdependence between two variables. If two…

Q: What information does a regression coecient provide that a correlation does not?

A: Correlation is used to find the association between two variables whereas regression is used to…

Q: Is the correlation significant between the pair of variables with the weakest correlation? Yes, at p…

A: Consider the level of significance is 0.05.

Q: Sancho believes that the relationship between the two variables he is investigating is curvilinear.…

A: It is an important aspect in statistics . It is widely used in correlation analysis .

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: For a data set of chest sizes (distance around chest in inches) and weights (pounds) of twelve…

A: The sample size n is 12.

Q: A company wishes to know whether advertising expenditure is related to sales volume. Using the past…

A:

Q: For a data set of chest sizes (distance around chest in inches) and weights (pounds) of twelve…

A: The linear correlation coefficient is r=0.732 and the data consists of 12 anesthetized bears. Let ρ…

Q: Here is a scatterplot. Give an estimate for the correlation coefficient r and explain how you made…

A: Correlation: Correlation determines the strength and direction of the linear relationship between…

Q: The coefficient of correlation is independent of the change of origin and scale of measurements.

A:

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

A: