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Mathematical Journal
Summarize the results of the activities by answering these questions:

1. How do you identify the dependent and independent variables?

2. What is the regression line?

3. Why is the regression line called the line that "best fit"?

4. How do we determine the regression line?

5. What is the use of the regression line?​

Sagot :

Torrejosjoanna8idn

Answer:

1.) The variables in a study of a cause-and-effect relationship are called the independent and dependent variables.

•The independent variable is a cause.It's value is independent of other variables in your study.

•The dependent variable is the effect. It's value depends on changes in the independent variable .

2.) A regression line is a straight line that describes how a response variable y changes as an explanatory variable x changes.We often use a regression line to predict the value of y for a given value of x.

3.)The regression line is sometimes called the "line of best fit" because it is the line the fits best when drawn through the points.It is a line that minimizes the distance of the actual scores from the predicted scores.

4.)A linear regression line has an equation of the from Y=a + bX where X is the explanatory variable and Y is the dependent variable. The slope of the line is b, and a is the intercept (the value of y when x=0).

5.)Regression line are useful in forecasting procedures.Its purpose is to describe the interrelation of the dependent variable (y variable) with one or many independent variables (x variable).

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