altAvultiple Choice 115 1 The variable about which the inves

altA.vultiple Choice (1-15 1. The variable about which the investigator wishes to make predictions or estimates is called the a) dependent variable c. independent variable b. unit of association d. discrete variable 2. In regression analysis, the quantity that gives the amount by which Y changes for a unit change in X is called the a. coefficient of determination c. Y intercept of the regression line b slope of the regression line d. correlation coefficient 3. In the equation y bo +bi (x), bo is the y intercept of the regression line 4. In the equation y-bo-bi (x), bi is the b. slope of the regression line d. correlation coefficient a. coefficient of determination a. coefficient of determination c. y intercept of the regression line slope of the regression line d, correlation coefficient 5. In regression and correlation analysis, the measure whose values are restricted to the range 0 to 1, inclusive, is the coefficient of determination c. y intercept of the regression line b. slope of the regression line d. correlation coefficient 6. In regression and correlation analysis, the measure whose values are restricted to the range -1 to +1, inclusive, is the a. coefficient of determination b. slope of the regression line c. y intercept of the regression line (acorrelation co d.)correlation coefficient

Solution

Solution-

1. The variable about which the investigator wishes to make predictions or estimates is called the Dependent variable.

The correct option is A. Dependent variable.

Reason-

A dependable variable is a verified and calculated variable in a scientific experiment. There is a \'dependency\' on an independent variable variable.It is an element or event that has changed with the effect of an individual element or event that is called an independent variable.

2. In regression analysis, the quantity that gives the amount by which Y changes for a unit change in X is called the Slope of the regression line.

The correct option is B. Slope of the regression line.

Reason-

The slope of regression line (B) indicates X changes in the rate of change in y. Since y is dependent on y, the descending y describes the future values ??of y given.

5. In regression and correlation analysis, the measure whose values are restricted to the range 0 to 1, inclusive, is the coefficient of determination.

The correct option is A. coefficient of determination.

Reason-

The coefficient of determination (shown by R2) is a significant product of regression analysis. This is interpreted as the difference between dependable variables expected from independent variables.

6. In regression and correlation analysis, the measure whose values are restricted to the range -1 to +1, inclusive, is the Correlation coefficient.

The correct option is D. Correlation coefficient.

Reason-

Correlation coefficient is a statistical measure that calculates the relationships between relative variations of two variables.

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