12th class Statistics chapter 14 online mcq test with answers for ICS part 2 Statistics chapter 14 (Simple Linear Regression and Correlation)

ICS Part 2 Statistics Chapter 14 Online Test

Sr. #	Questions	Answers Choice
1	Regression line x on y is
2	If X and Y are independent, then Cov(x,y) = 0 which implies that	b<sub>yx</sub> = 0 b<sub>xy</sub> = 0 ρ = 0 a = 0
3	r_xy -------------- r_yx	= < > ≠
4	If constants are added to or subtracted from the values of the variables, the value of r	is negative is positive is zero remains unchanged
5	The measures of strength of closeness of linear relationship between two variables is called	simple linear regression composite linear regression simple linear correlation composite linear correlation
6	If r = -1, then there is	negative correlation perfect negative correlation no correlation average correlation
7	If b_yx = 0.89 and b_xy = 0.75, then r=	0.89 0.28 0.98 0.82
8	r is the ------------ of two regression co-efficient b_yx and b_xy	arithmetic mean geometric mean harmonic mean median
9	The estimates of the parameters=α and=β are	μ and=σ2 a and b μ andπ χ2 and Z
10	A set of points in a rectangular coordinate system, where each point represents an observed pair of values is called	least square regression scatter diagram pie graph regression coefficient
11	The variable that forms the basis of estimation is called	regression regressand regressor correlation
12	The relationship that describes the dependence of the expected value of the dependent random variable for a given value of the independent non-random variable is called	equation relation ratio regression