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In the mathematical Equation of Linear Regression Y = β1 + β2X + ϵ, (β1, β2) refers to __________
In the mathematical Equation of Linear Regression Y = β1 + β2X + ∊, (β1, β2) refers to . . . . . . . .
What is/are true about ridge regression?
1. When lambda is 0, model works like linear regression model
2. When lambda is 0, model doesn't work like linear regression model
3. When lambda goes to infinity, we get very, very small coefficients approaching
04. When lambda goes to infinity, we get very, very large coefficients approaching infinity.
Which among the following statements is/are correct. a. Every mathematical concept gives rise to more mathematical concepts. b. Mathematical ideas grows from abstract to concrete. c. Mathematical ideas grows from particular to general.
Which of the statements about mathematical games is/are correct? (a) Mathematical games must be like open ended play.  (b) Mathematical games provide non-didactic feedback to the child.  (c) Mathematical games promote processes of anticipation and planning in child. 
In a linear regression problem, we are using "R-squared" to measure goodness-of-fit. We add a feature in linear regression model and retrain the same model. Which of the following option is true?
Which of the following statements is false?  1. When value of correlation coefficient is one, the two regression lines coincide 2. The regression coefficients are independent of the change of origin and of scale 3. The sign of the regression coefficients are always the same 4. The square of the coefficient of correlation is called coefficient of determination 
Assertion (A): If regression coefficient of X on Y is greater than one, regression coefficient of Y on X must be less than one.
Reason (R): The geometric mean between two regression coefficients is the coefficient of correlation.
Assertion (A): If regression coefficient of X on Y is greater than one, regression coefficient of Y on X must be less than one.
Reason (R): The geometric mean between two regression coefficients is the co-efficient of correlation.
On the basis of the above, choose the appropriate answer :
Which of the following statements is/are true regarding mathematical skills and competencies used by street vendors and shopkeepers? A) They are not useful to solve mathematical problem in class B) They are ambiguous and illogical C) They help in developing alternate strategies in solving mathematical problems