Attempt any three questions. Q1. The regression line between height (X) in inches and weight (Y) in Ibs of male students are: 2y – 5x = 17 7x + 3y = 21 Determine which is regression of Y on X and X on Y. Obtain also correlation coefficient 'r'. 2. The following table gives the ages and blood pressure of 9 women. Age (X): 56 42 36 47 49 42 60 72 63 Blood Pressure(Y) 147 125 118 128 145 140 155 160 149 Find the correlation coefficient between X and Y. (i) Determine the least square regression equation of Y on X. 23. Find out the regression coefficients of Y on X and of X on Y on the basis of following data: Ex = 50, X = 5, ΣΥ-60, 60. F= 6, EXY = 350 Variance of X = 4, Variance of Y= 9 24. The equations of two regression lines between two variables are expressed as 2X- 3Y= 0 and 4Y– 5X-8 = 0. (i) Identify which of the two can be called regression line of Y on X and of X on Y. (ii) Find X and Y and correlation coefficient r from the equations

Attempt any three questions. Q1. The regression line between height (X) in inches and weight (Y) in Ibs of male students are: 2y – 5x = 17 7x + 3y = 21 Determine which is regression of Y on X and X on Y. Obtain also correlation coefficient 'r'. 2. The following table gives the ages and blood pressure of 9 women. Age (X): 56 42 36 47 49 42 60 72 63 Blood Pressure(Y) 147 125 118 128 145 140 155 160 149 Find the correlation coefficient between X and Y. (i) Determine the least square regression equation of Y on X. 23. Find out the regression coefficients of Y on X and of X on Y on the basis of following data: Ex = 50, X = 5, ΣΥ-60, 60. F= 6, EXY = 350 Variance of X = 4, Variance of Y= 9 24. The equations of two regression lines between two variables are expressed as 2X- 3Y= 0 and 4Y– 5X-8 = 0. (i) Identify which of the two can be called regression line of Y on X and of X on Y. (ii) Find X and Y and correlation coefficient r from the equations

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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