D:-an equal and independent chance of being included in the sample
Correct Answer:- Option-D
Question62:-In SRSWR with usual notations, the standard error of the sample mean ‘quadbary” is
A:-quadS({N-n}/{Nn})*{1/2}°
B:-quadS({N-1}/{Nn})*{1/2}°
C:'quadS(1-{n}/{N})*{1/2}°
D:-quadS/n(1-{1}/{N})*{1/2}°
Correct Answer:- Option-B
Question63:-The formulae for optimum allocation in various strata in stratified sampling were first derived by
A:-Tschuprov
B:-Cochran
C:-Lahiri
D:-Neymann
Correct Answer:- Option-A
Question64:-The ratio estimator of population mean is unbiased if sampling is done according to
A:-PPSWR
B:-PPSWOR
C:-SRSWR
D:-SRSWOR
Correct Answer:- Option-A
Question65:-The cluster sampling is more efficient when
A:-the variation within clusters in more
B:-the variation between clusters is less
C:-both (1) and (2)
D:-neither (1) nor (2)
Correct Answer:- Option-C
Question66:-Local control is a device to maintain
A:-homogeneity within blocks
B:-homogeneity among blocks
C:-both (1) and (2)
D:-neither (1) nor (2)
Correct Answer:- Option-A
Question67:-In a linear model ‘quadY_{ij}=alpha_i+e_{ij},’ ‘quadj=1,2,...,n_i;> ‘quadi=1,2,...,k,, consider
(i) ‘quadalpha_1-3alpha_2+alpha_3+alpha_4°

(ii) ‘quadalpha_1+3alpha_2-alpha_3-alpha_4*
(iii) ‘quadalpha_1+3alpha_2-2alpha_3-2alpha_4°

Then which of the following is correct?
A:-(i) and (ii) are linear contrasts
B:-(i) and (iii) are linear contrasts
C:-(ii) and (iii) are linear contrasts
D:-(i), (ii) and (iii) are linear contrasts
Correct Answer:- Option-B
Question68:-While analyzing the data of a ‘quadkxxk* Latin Square Design, the degrees of freedom in the ANOVA is
A:-quadk*2-1°

C:-‘quadk*2-2k+1>

D:- quad(k-1)(k-2)°

Correct Answer:- Option-D
Question69:-In a split plot design with factor ‘quadA* at 3 levels in main plots, factor ‘quadB* at 3 levels in sub-plots and 3
replications, the degrees of freedom for sub-plot error is

A:-27

B:-12

C:-8

D:-4

Correct Answer:- Option-B

Question70:-If the interactions ‘quadAB* and ‘quadBC* are confounded with incomplete blocks in a ‘quad2“n° factorial
experiment, then automatically confounded effect is