Questions about relationship* 1. Explain the relationship between correlation analysis dan regression analysis( * is relationsip,...

Questions about relationship*

1. Explain the relationship between correlation analysis dan regression analysis( * is relationsip, not difference )
2. Explain the relationship between correlation covariance
3. Explain the relationship on this three analysis

Solutions

Expert Solution

Ans. (1)

Correlation analysis is one of the statistical methods to measure the strength between the two variable or more than to two variable.

The regression analysis is the prediction of the value of the dependent variable based on the value of inde[endent variable.

(2)

(a)The covariance is the measure of correlation and it is used in the calculation of correlation. The range of the value of correlation is between -1 and 1however the value of covariance lie between negative infinity to positive infinity.

(b) The covariance and correlation both measure does not affect by the change in the location. The covariance is affected by a change in scale however the correlation does not affect by a change in scale.

(3)

The regression, covariance, and correlation all measures are used to analyze the relationship between two variables in a different way. The value of covariance is used to calculate the correlation and the predicted values from the regression equation may be used for further calculation of covariance and correlation.

orchestra answered 1 year ago

Next > < Previous

Related Solutions

Intro Discussion and Questions- Regression and Correlation: How does correlation analysis differ from regression analysis? What...

Intro Discussion and Questions- Regression and Correlation: How does correlation analysis differ from regression analysis? What are the goals of each? What does the correlation coefficient r measure? Be specific. What values can it take on? What do the values indicate? What values can the coefficient of determination take on? What does it measure? What are some of the limitations of simple linear regression? Describe the equation for multiple linear regression; be sure to clearly define all of its parts....

Explain the difference between correlation analysis and regression analysis. Give an example of a lurking variable....

Explain the difference between correlation analysis and regression analysis. Give an example of a lurking variable. If a statistician computed a value of r = -2.83 what would you tell that statistician? Under what circumstances can we calculate r? Can the regression equation be assumed to hold 100 years from now? Are there other correlation coefficients other than the Pearson Product Moment Correlation Coefficient

What is the real difference between between correlation and regression analysis? I see that correlation allows...

What is the real difference between between correlation and regression analysis? I see that correlation allows us to examine whether two variables exhibit some kind of association with each other. Does correlation mean means that one variable is dependent on another? Is this an example of correlation - Tips are dependent on the actual restaurant bill? Can you give other examples of correlation and regression? Thanks.

2. Describe the difference between correlation and prediction (regression) analysis approaches?

CASE STUDY 2: Correlation and Regression are investigating the relationship between two continuous variables such as...

CASE STUDY 2: Correlation and Regression are investigating the relationship between two continuous variables such as height and weight, time and speed or the concentration of an injected drug and heart rate. a) In your opinion, discuss the importance of Correlation and Regression as a tools for analysis purposes. b) Find any correlation and regression that have been applied in business from the online platform. From the data you required to: i. State the Independent and Dependent Variable ii. Draw...

What impact does regression have on correlation analysis? Explain the two ways correlation can be displayed...

What impact does regression have on correlation analysis? Explain the two ways correlation can be displayed mathematically. Does one way have an advantage over the other? Please explain your thinking.

The authors of a paper presented a correlation analysis to investigate the relationship between maximal lactate...

The authors of a paper presented a correlation analysis to investigate the relationship between maximal lactate level x and muscular endurance y. The accompanying data was read from a plot in the paper. x 400 760 770 810 850 1015 1190 1240 1310 1400 1475 1480 1505 2200 y 3.80 3.90 5.00 5.20 4.10 3.60 6.40 6.88 7.55 4.95 7.70 4.45 6.50 8.90 Sxx = 2,617,030.357, Syy = 36.8158, Sxy = 7469.654. A scatter plot shows a linear pattern. (a)...

Regression and Correlation Examine the relationship between recreational facilities and adult obesity. What is your x...

Regression and Correlation Examine the relationship between recreational facilities and adult obesity. What is your x variable and why? What is your y variable and why? What is the correlation coefficient (r)? What does this mean concerning the relationship between facilities and adult obesity? What is r2? What does this mean(interpret it in a sentence)? What would be the slope and y-intercept for a regression line based on this data? What is your p-value? How do you interpret this? Adult...

Checking Your Progress – Correlation & Regression Researchers investigated the relationship between amount of study time...

Checking Your Progress – Correlation & Regression Researchers investigated the relationship between amount of study time statistics class and mid-semester quiz scores. The data appear below: 1 28 95 2 25 95 3 3 58 4 10 75 5 0 44 6 15 83 7 20 91 8 24 87 9 7 65 10 8 70 Find the correlation between hours of study and quiz scores, and test it for significance. Then complete a simple linear regression analysis using hours...

How is a linear regression analysis is different from a correlation analysis?

Subjects