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Chapter 1: Q 5. (page 31)

Explain the meaning of a

(a) representative sample,

(b) probability sampling,

(c) simple random sampling.

Short Answer

Expert verified

(a) representative sample: it represents the important features of a population that is under study.

(b) probability sampling: a randomized method is used to sample data.

(c) simple random sampling: each sample has an equal chance of being drawn.

Step by step solution

01

Part (a) Step 1. Given information.

The given statement is:

Explain the meaning of a representative sample, probability sampling, and simple random sampling.

02

Part (a) Step 2. Define a representative sample.

A representative sample is one that represents the salient characteristics of the population under study as precisely as feasible.

03

Part (b) Step 1. Define probability sampling.

In probability, a random device is used to sample data, such as throwing a coin or reading a table of random numbers. or using a random generator to choose which members of the population will make up the sample Rather than relying on human judgment to make such decisions,

Alternatively, In other words, each person has a different chance of being included in the sample.

04

Part (c) Step 1. Define simple random sampling.

Simple random sampling is a sampling method in which each possible sample of a given size has an equal chance of being drawn or chosen from the population.

There are two types of simple random sampling techniques:

Simple random sampling with replacement and Simple random sampling without replacement.

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What is the acronym used for simple random sampling without replacement?

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