Paper 4: Fundamentals of Business Mathematics & Statistic
6.20 I FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS Correlation and Regression IMPORTANT FORMULAE KARL PEARSON’S COEFFICI ...
FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS I 6.21 Whereas in case of regression analysis, there is a functional relatio ...
6.22 I FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS Correlation and Regression Solution : Table : Calculation of Regressi ...
FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS I 6.23 Regression equation of Yon X is given by Y = a + bX Where constants a ...
6.24 I FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS Correlation and Regression Y Y b (X X)− = yx − Where YX 2 b = XY X ∑X ...
FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS I 6.25 Regression equation of Y on X Y Y b (x x)− = YX − Where YX 2 b XY = x ...
6.26 I FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS Correlation and Regression Solution: Table : Calculation Regression E ...
FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS I 6.27 Y Y b (x x)− = YX − ( ) YX X Y X Y 2 (^2) X X d d - d d Where b = d d ...
6.28 I FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS Correlation and Regression Regression coefficient of y on x or byx ca ...
FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS I 6.29 ∑(X - 20)(Y-10) = ∑xy = 40 Regression Equation of X and Y X - X = bXY ...
6.30 I FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS Correlation and Regression Solution: Let the marks in Maths be denote ...
FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS I 6.31 Example20 : The data about the sales and advertisement expenditure of ...
6.32 I FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS Correlation and Regression Regression Equation of Y on X : Y X Y Y r ...
FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS I 6.33 Regression Equation of Y on X Y X Y Y r (X X)− = σσ − Y - 30 = 0.8^45 ...
6.34 I FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS Correlation and Regression (ii) given variance of marks in statistics ...
FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS I 6.35 Regression Equation of Y on X Y X Y Y r (X X)− = σσ − Y - 35 = 0.8 10 ...
6.36 I FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS Correlation and Regression X^250 25 and Y^30030 = 10 = = 10 = XY 2 b ...
FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS I 6.37 Solution: (1) ∑X = 350 N = 10 X X^35035 = N 10= = Y Y^31031 = N 10= = ...
6.38 I FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS Correlation and Regression Solution: Given AX= Assume mean of X serie ...
FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS I 6.39 80 1500 5 80 300 160 2500 160 500 5 − − = = − − (^220) 0.647 340 =− = ...
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