Five stocks make up your stock portfolio.The stocks are designated A, B, C, D and E.You plan to select a random sample of three of the stocks to be researched more fully.List the possible samples that you might choose if you use simple random sampling.
A)ABC, ABD, ABE, ACA, ACE, AED, BCD, BCE, BDE, CDE
B)ABC, ABD, ABE, ACD, ACE, ADE, BCD, BCC, BDE, CDE
C)ABC, ABD, ABE, ACD, ACE, ADE, BCD, BCE, BDE, CDE
D)ABC, ACB, ABE, ACD, ACE, ADE, BCD, BCE, BDE, CDE
E)ABC, ACB, AEB, ADC, AEC, AED, BCD, BCE, BDE, EDC

Question

Quizplus · Accepted Answer

Simple random sampling without replacement for choosing 3 out of 5 stocks results in combinations, not permutations, of the stocks. The correct list should include all unique combinations of three stocks without repeating any combination. Option C correctly lists all unique combinations without repetition or order significance.

Five Stocks Make Up Your Stock Portfolio