. A and B are independent events .(i) (ii) . / .(i) / (ii) / . / .(i) / (ii) / (iii) / .
Exercise . (d) (c) (d) (a) (c) (a) (d) (c) (b) (a) (d) (c) (a) (b) (d) (a) (a) (b) (c) (d) (d) (b) (a) (b) (a) Miscellaneous Problems . . tons .
. Median= , MD = . . Mean= .
, MD = . . QD= , Coefficient of QD= . .
CORRELATION AND REGRESSION ANALYSIS Exercise . . . .
. Y = .6102X+ . ; X = .556Y+ . Height of son is .
. Y = . X – . ; weight of the student is .
Y + . . Y = . X ; estimated yield = .
unit per acre . Y = . X + . ; Estimated sales = .
( in crores of rupees) . Y = . X + . ; X = .
X + . ; estimated expenditure on food and entertainment ( Y ) is . . X = .
Y – and estimated value of X is . when Y = Y = . X + . and estimated value of Y is .
when X = . X = ; Y = and r = . . ; ; xy yx = − = − = − Exercise .
(a) (b) (a) (b) (c) (a) (a) (b) (a) (b) (a) (a) (c)