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” ‏گا‎
‎A:-'quadS({N-n}/{Nn})~{1/2}"
‎8;-60265((1-1)/(1೧)) (1/2)
யற்ற
0: 4८२05/0(1-{1}/{14})^ {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) ೧೦೯ (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) ೧೦೯ (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"

(1) *quadalpha_1+3alpha_2-alpha_3-alpha_4"
(11) *quadalpha_1+3alpha_2-2alpha_3-2alpha_4'

Then which of the following is correct?
i} and (1) ೩೧೬ ೧6೩೯ ೧೧೧೭೧೫5೬
are linear contrasts
linear contrasts
. ராணா
Correct Answer:- Option-B
Question68:-While analyzing the data of a “quadlook” Latin Square Design, the degrees of freedom in the ANOVA is
&:- १५३५८21
8:-१५॥५॥1 `
C:-"quadk™2-2k+1"
D:-* quad{k-1}{k-2)"
Correct Answer:- Option-D
Question69:-In a split plot design with factor “ഡ്രാമ 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
‏7-ھ‎
‎62
‎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