(i) (ii) ( ) (iii) (i) (ii)
n 1 n 2 n k
(i) (ii) (iii) (iv) (v) (i) ( ) (ii) ( ) (iii) ( ) (iv) (v) (i) (ii)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 s (s+1) (s+2) N 6 12 18 K=N/n
(i) (ii) (iii) (i) (ii)
(Convenience Sampling) (Judgement Sampling) (Quota Sampling) (Snowball Sampling)
Ex.
(Purposive)
µ 0.92 σ 0.25 0.81 0.63 1.04 1.11 0.91
Sol: 0.90 n σ = s n 1 0.92-0.90=0.02 x 0.19 0.25-0.19=0.06 s
(unbiased estimate) SRS( )
( )