Which of the following scenarios could give you a meaningful regression analysis? a. There is no linear relationship between the variables b. Correlation will be done after the regression analysis c. There is a strong negative linear relationship between the variables d. The value of is not significant
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.
Which of the following scenarios could give you a meaningful
a. There is no linear relationship between the variables
b.
c. There is a strong negative linear relationship between the variables
d. The value of is not significant
4. In a regression line, how do you call the magnitude of the change in one variable when the other variable
changes at a unit?
a. Unit change c. marginal change
b. Variable change d. regression change
5. If the equation of the regression line is , how can it be interpreted?
a. Every unit of change in the value of , the value of also changes at 6 units on average
b. The slope of the line is .234
c. Every unit of change in the value of , the value of also changes at .234 unit on average
d. Every unit of change in the value of , the value of also changes at 6 units on average
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