Which of the following is a stratified sample? 1. Items or individuals are chosen without regards to their probability of occurrence. 2. The subjects of the sample are chosen on the basis of known probability. 3. Every individual or item from the frame has an equal chance of being selected. Selection may be with replacement or without replacement. 4. Decide on a sample size, n; divide frame of N individuals into groups of k individuals, k = N/n; randomly select one individual from the first group; select every kth individual thereafter. 5. The population is divided into two or more groups according to some common characteristic, e.g., whether an employee is full-time or part-time; simple random sample is selected from each group; the two or more samples are combined into one. 6. The population is divided into several parts, e.g., counties or election districts, in which each is representative of the population; a simple random sample is selected from each cluster; the samples are combined into one.

Which of the following is a stratified sample? 1. Items or individuals are chosen without regards to their probability of occurrence. 2. The subjects of the sample are chosen on the basis of known...

Which of the following is a stratified sample?

	1.	Items or individuals are chosen without regards to their probability of occurrence.
	2.	The subjects of the sample are chosen on the basis of known probability.
	3.	Every individual or item from the frame has an equal chance of being selected. Selection may be with replacement or without replacement.
	4.	Decide on a sample size, n; divide frame of N individuals into groups of k individuals, k = N/n; randomly select one individual from the first group; select every kth individual thereafter.
	5.	The population is divided into two or more groups according to some common characteristic, e.g., whether an employee is full-time or part-time; simple random sample is selected from each group; the two or more samples are combined into one.
	6.	The population is divided into several parts, e.g., counties or election districts, in which each is representative of the population; a simple random sample is selected from each cluster; the samples are combined into one.

Jun 07, 2022