What is the purpose of a scatter diagram (Scatter plot)? (Please provide Scatter plot examples) What is the Difference between linear regression and multiple regression analysis? What is the use of regression analysis (Please support your answer with a suitable example)? How to conduct multiple regression in Excel (Provide the steps)? A random sample of eight drivers insured with a company and having similar auto insurance policies was selected. The following table lists their driving experiences (in years) and monthly auto insurance premiums. Driving Experience (years) Monthly Auto Insurance Premium 5 $64 2 87 12 50 9 71 15 44 6 56 25 42 16 60 Does the insurance premium depend on the driving experience or does the driving experience depend on the insurance premium? Do you expect a positive or a negative relationship between these two variables?
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.
- What is the purpose of a
scatter diagram (Scatter plot)? (Please provide Scatter plot examples) - What is the Difference between linear regression and multiple
regression analysis ? - What is the use of regression analysis (Please support your answer with a suitable example)?
- How to conduct multiple regression in Excel (Provide the steps)?
- A random sample of eight drivers insured with a company and having similar auto insurance policies was selected. The following table lists their driving experiences (in years) and monthly auto insurance premiums.
|
Driving Experience (years) |
Monthly Auto Insurance Premium |
|
5 |
$64 |
|
2 |
87 |
|
12 |
50 |
|
9 |
71 |
|
15 |
44 |
|
6 |
56 |
|
25 |
42 |
|
16 |
60 |
Does the insurance premium depend on the driving experience or does the driving experience depend on the insurance premium? Do you expect a positive or a negative relationship between these two variables?
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