I need help answering these questions
A) In a linear regression model..
We have dependent variable and independent variables for explaining the dependent variable.
One of the basic purpose of linear regression line is to able to predict one set of scores (dependent) from another set(independent) with the help of fitted regression line.
D option is correct.
2 The general equation for the straight line is
Y=a+bX
Where Y is dependent variable
X is independent variable
a,b are parameters of the model.
C option is correct
3)The slope of straight line is represented by 'b'.
Option B is correct.
4) In the above straight line .
Slope of the line is 'b' which is coefficient of X variable.
OptionB is correct.
5)In the straight line in general form slope is
(Y2-Y1)/(X2-X1)
C is correct.
6)The amount of change in Y variable that accompanies a given amount of change in X variable is the slope of the straight line
A is correct
7)
Y=-.8X
When X=10
Y is -.8*10=-8
A IS CORRECT.
8) If Y is Y=-1.4+5X
Then slope is 5 and intersect the Y axis at -1.4
C is correct.
I need help answering these questions MULTIPLE CHOICE. Choose the one alternative that best completes the...
Enter True or False, depending on whether the corresponding statement is true or false. 1. If the coefficient of correlation r = 0, then there is no linear relationship between the variable y and the variable x. 2. A straight line that slopes upward and exactly fits all data points would produce a correlation coefficient value of one. Consider the linear equation y = Bo + B1x. Enter your answers as a single letter indicating the correct answer, i.e. A...
(8 points) Consider the linear equation y = bo +bix. a. In the equation, bo is A. the dependent variable B. the slope C. the y-intercept D. the independent variable b. In the equation, b, is A. the independent variable B. the slope C. the y-intercept D. the dependent variable C. Give the geometric interpretation of bo. It indicates A. how much the x-value on the straight line changes when the y-value increases by unit B. the x-value where the...
Multiple Choice Questions Choose the one alternative that best completes the statement or answers the question (2.5 points each). You do not need to justify your answers. A If one wants to test whether there is a difference in mean scores before and after an exam, which will be an appropriate test to use? a) one sample z test b) one sample t test c) paired t test d) two sample independent t test B If X is a random...
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Solve the equation using the Multiplication Property of Equality. A) I-36 C) (4 D) 15) Solve the equation. Check your solution.- 4 21 A) y.2.1 5 5 3y A) D) 18 4) 1.2x- 4.6 0.4x +1.64 C) 17.02) Solve the system of equations using substitution. 5)x-5y 14 y -2 A) 24,-2) 6) fy-5x + 7 A) infinitely many solutions 1 26 B) 26 1 C)...
Answer all please MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Solve the equation using the Multiplication Property of Equality. A) I-36) B) 1-3) C) 14) D) 15) Solve the equation. Check your solution. 4 21 Y.2.1 18 4) 1.2x - 4.6 0.4x +1.64 ")10128(617.8 C) 17.02) Solve the system of equations using substitution. 5)|x-5y = 14 y -2 A) 24,-2) 6) y-5x + 7 y 8x+6 A) infinitely many solutions C) no...
In the simple linear regression equation, (y a+ bx+ e), the a is the... O A. independent variable O B. slope of the fitted line C. dependent variable O D.y-intercept Reset Selection Question 2 of 5 1.0 Points In the simple linear regression equation, (y a+bx+ e) the y is the O A. independent variable O B. dependent variable O C. slope of the fitted line D. y-intercept Question 3 of 5 1.0 Points The R2 for a regression model...
nstructor as a Multiple Choice 04-08 of the regression line. In the graph of the simple linear regression equation, the parameter B, is the O a. slope O b. x-intercept O c. y-intercept O d. end-point oooo olololo a Multiple Choice 04-10 - The procedure of using sample data to find the estimated regression equation is better known as O a. interval estimation O b. extrapolation O c. point estimation O d. the least squares method Icon Key
14. Multiple Choice Variables x and y have a correlation coefficient of r = 0.89. Which statement is best? a. There is a strong positive association between x and y and a straight line fit to the data cannot be substantially improved by fitting a curve to the data. b. There is a strong positive association between x and y and a straight line fit to the data can certainly be substantially improved by fitting a curve to the data....
i neeed help for my qz2 this one is visual basic , i dont understand how to write code QZ2: Linear Regression (100 points) Given: A data table (see next page) Find: 1. Use one-dimensional array to find the equation of least-squares-fit line (slope and y-intercept; 10 points each), correlation coefficient and coefficient of the determination (10 points each) 2. Use two-dimensional array to find the equation of least-squares-fit line (slope and y-intercept; 10 points each), correlation coefficient and coefficient...