Regression:
In the words of M.M.Blair:
“Regression is the measure of the average relationship between two or more variables in terms of the original units of the data”.
In the case of linear regression, the regression equations represent straight lines and there is a linear regression between the variables.
The regression equation of Y on X is
The regression equation of X on Y is
The point lies on both the lines of regression. Thus to find we have to solve the above two equations.
are called regression coefficients.
The correlation coefficients
The sign of correlation coefficient is according to the sign of regression coefficients. If both the regression coefficients are positive, the correlation coefficient is positive. If both the regression coefficients are negative, the sign of the correlation coefficient is negative.
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Solutions of Linear Regression – Previous Years Board questions – (2005 to 2013) – ISC – Class 12 – Mathematics
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Inverse Trigonometric Functions 
Determinants – Chapter 4 
Determinants Chapter 4 Exercise 4.1 and 4.2 
Determinants Chapter 4 Exercise 4.3 and 4.4 
Determinants – Chapter 4 – Exercise 4.5 
Determinants – Chapter 4 – Exercise Miscellaneous 
Continuity and Differentiability – Chapter 5 
Continuity and Differentiability – Chapter 5 – Exercise 5.2 
Continuity and Differentiability – Chapter 5 – Exercise 5.3 
Continuity and Differentiability – Chapter 5 – Exercise 5.4 
Continuity and Differentiability – Chapter 5 – Exercise 5.5 
Continuity and Differentiability – Chapter 5 – Exercise 5.6 
Continuity and Differentiability – Chapter 5 – Exercise 5.7 
Integrals – Chapter 7 
Integrals – Chapter 7 – Exercise 7.1 
Integrals – Chapter 7 – Exercise 7.2 – Integration by substitution 
Integrals – Chapter 7 – Exercise 7.3 – Integrations using trigonometric identities 
Integrals – Chapter 7 Exercise 7.4 
Integrals – Chapter 7 – Exercise 7.5 – Integration by partial Fractions 
Integrals –Chapter 7 – Exercise 7.6 – Integration by parts 
Integrals – Chapter 7 Exercise 7.7 – Some special types of standard integrals 
Integrals – Chapter 7 – Exercise 7.9 – Definite Integrals (1) 
Integrals –Chapter 7 Exercise 7.10 Definite Integrals (2) – Definite Integrals by Substitution 
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MCQ Class 10 Physics

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