25. For a given set of dataΣx = 15, Σ x² = 55, Σy = 43, Σ y² = 397, Σ xy = 145, n = 5What is the equation of the regression line of y on x?y = 3.8+1.6xy = 1.6+3.8xy = 3.8+0.97xy = 1.6+0.97xA.B.C.D.

we know,For a given set of data,

Answered: 25. For a given set of data Σx=15, Σx²…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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16)
41
1.)Make a scatter plots by sex for VistsPerWeek vs. Friends for those in the Facebook_Survey_Sample who have a facebook account. 2.)For the men’s scatter plot, from question 1, find the line through (25,60) and (15,40) and then find the RSE for the line. 3. Find the regression line for the points in the men’s scatter plot from question 1. 4.)Use the regression as a model to predict how many facebook friends a man who visits Facebook 80 times per week should have. 5.)Find the RSE for the regression line in question 3.
5. The National Center for Health Statistics published data on heights and weights. We obtained the following data from 10 randomly selected males 8-12 years of age. * y Height 69 Weight 151 72 154 70 160 200 Weight go IGO Regression Equation: Correlation r = 67 153 140 (20 O 75 201 66 126 a. If the researcher uses "Height" to predict "Weight" then the response variable is weight b. Use your calculator to create a scatter plot. Copy the scatter plot below (draw it). Make sure to label the horizontal axis and vertical axis, and provide the minimum and maximum values (displayed on your graph on your calculator) on each axis.. 70 174 71 185 60 70 Height 80 c. Is the association between the two variables positive or negative, or no association? (circle one) 68 143 g. Identify the slope of the regression line: and mention both men's heights and weights.)" d. Use your calculator to find the regression line (or line of best fit) and the correlation r. (Make sure something has a hat on it.) 65…
1. Correlation analysis is used to determine the equation of the regression line b. a specific value of the dependent variable for a given value of the independent variable the strength of the relationship between the dependent and the independent variables d. a. с. None of these alternatives is correct.
7. Find slop of a linear regression model for the following data: x = [1, 2, 3, 4, 5, 6, 7] z = [ 1.40, 3.78, 4.41, 4.60, 8.40, 8.64, 12.81]. -1.7 -0.5 0.5 O 1.7 CS Scanned with CamScannel
30)
- 16. Find the least squares regression line for the points (0, 8), (4, 5), (5, 3), (8,-1), and (10,-2). Round numerical values in your answer to two decimal places. a. y=-1.07x+2.63 b. y=-1.27x+8.36 c. y=-1.07x+8.36 d.y=-1.07x+10.54 c. y=-1.27x+2.63
1) Draw the graph of the estimated regression below. Y₁ = Bo + B₁X₁B₂X² + B3X²
4. Consider a multiple linear regression model with two independent variables with 12 values in each variable. The coefficient of determination is obtained as 0.58. Evaluate the adjusted coefficient of detemination. for f nding Tote1 Cam ltinle lincor

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25. For a given set of data Σx=15, Σx² = 55, Σ y = 43, Σ y² = 397, Σxy=145, n = 5 What is the equation of the regression line of y on x? y = 3.8+1.6x y = 1.6+3.8x y = 3.8+0.97x y = 1.6+0.97x A. B. C. D.