CORRELATION Two regression lines of asample are X+6Y= 6 and 3X+2Y= 0. Find thecorrelation coefficient.

Answered: Image /qna-images/answer/971cffe9-2359-4132-993f-8bfca66927d7.jpg

Answered: * Two regression lines of a sample are…

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015

1st Edition

ISBN:9781680331141

Author:HOUGHTON MIFFLIN HARCOURT

Publisher:HOUGHTON MIFFLIN HARCOURT

Chapter4: Writing Linear Equations

Section: Chapter Questions

Problem 12CR

See similar textbooks

Similar questions

the regression line always passes through mcq
Here, mean of X is 3 and the mean of Y is 7. The regression line that predicts Y from X necessarily goes through the point (3,7). True False
A regression line describes the relationship between the dependent and independent variables and can be used to estimate specific points for x or y, provided an individual is supplied with the values of all the other variables but one. True or false
Would I use the regression line to predict Y from X ? And what is the pattern of the scatterplot?
when a regression is used as a method of predicting dependent variables from one or more independent variables. How are the independent variables different from each other yet related to the dependent variable?
Find the degrees of freedom in a regression model with an intercept term that has 88 observations and 7 explanatory variables.
when the regression line passes through the origin then
To monitor and improve its productivity, a company made an investigation and found out that the factor that affects the productivity the most is the absenteeism. The company data analytics department have collected data about the two variables (Productivity and Absenteeism) for the 12 past years as shown in the table below. Now the purpose of the company is to determine, through regression analysis, whether the productivity is statistically affected by the absenteeism level or not. Year Absenteeism Productivity (in number of absent worker) (in Million AED) 1 204 342 2 352 336 3 154 406 4 206 410 5 422 278 6 530 214 7 750 138 8 482 268 9 374 262 10 120 356 11 188 396 12 634 152 Questions: Construct a scatter diagram for the data about productivity and absenteeism then interpret the possible relationship that can be found. Construct a simple regression model to predict the…
The following table gives the data for the grades on the midterm exam and the grades on the final exam. Determine the equation of the regression line, yˆ=b0+b1x�^=�0+�1�. Round the slope and y-intercept to the nearest thousandth. Grades on Midterm and Final Exams Grades on Midterm 7171 6262 7878 9494 8383 8181 8080 9494 8585 6262 Grades on Final 8888 7979 8888 9191 8080 7070 7171 9393 6565 7777
Which pair of h0/h1 is used in the two sided test for the slope of a simple linear regression?
Calculate the equation of the regression line and calculate the correlation coefficient
4) Use computer software to find the multiple regression equation. Can the equation be used for prediction? A wildlife analyst gathered the data in the table to develop an equation to predict the weights of bears. He used WEIGHT as the dependent variable and CHEST, LENGTH, 4)_ and SEX as the independent variables. For SEX, he used male-1 and female=2. WEIGHT CHEST LENGTH SEX 344 45.0 67.5 1 416 54.0 72.0 1 220 41.0 70.0 360 49.0 68.5 332 44.0 73.0 1 140 32.0 63.0 436 48.0 72.0 1 132 33.0 61.0 356 48.0 64.0 150 35.0 59.0 1 202 40.0 63.0 365 50.0 70.5 1 A) WEIGHT = 196 + 2.35CHEST + 3.40LENGTH + 25SEX; Yes, because the R2 is high. B) WEIGHT =-320+10.6CHEST + 7.3LENGTH-10.7SEX; Yes, because the P-value is high. C) WEIGHT =-442.6 + 12.1CHEST + 3.6LENGTH- 23.8SEX; Yes, because the adjusted R² is high. D) WEIGHT = 442.6+ 12.1CHEST + 4.2LENGTH– 21SEX; Yes, because the P-value is low. %3D |D %3D

SEE MORE QUESTIONS

Recommended textbooks for you

Big Ideas Math A Bridge To Success Algebra 1: Stu…

Algebra

ISBN:

9781680331141

Author:

HOUGHTON MIFFLIN HARCOURT

Publisher:

Houghton Mifflin Harcourt