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Statistics Basics: Population and Sample

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Statistics Basics: Population and Sample

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Questions and Answers

What is the main difference between probability and non-probability sampling?

Probability sampling is faster than non-probability sampling

The sample size is fixed in probability sampling

Non-probability sampling is used for large populations

Probability sampling has a known probability of being selected (correct)

What is the method of selecting kth element in the population list?

Systematic Random Sampling (correct)

Simple Random Sampling

Cluster Sampling

Stratified Random Sampling

How is the sample size of each group determined in Stratified Random Sampling?

Equal distribution among all groups

Randomly

Manually by the researcher

Proportionally to the size of each group in the population (correct)

What is the purpose of dividing the population into groups in Stratified Random Sampling?

To ensure representation of different characteristics in the study Signup and view all the answers

What is the method of selecting a sample where each member of the population is equally likely to be included?

Simple Random Sampling Signup and view all the answers

How is the value of k determined in Systematic Random Sampling?

By the formula: k = N/n Signup and view all the answers

What is the term for the set of all observations under study for a given characteristic or variable?

Population Signup and view all the answers

A teacher wants to conduct a study on the correlation of students' entrance examination scores and their academic performance. Which of the following best describes the population in this study?

All students enrolled in the school Signup and view all the answers

What is the purpose of census?

To gather information by complete enumeration of the population Signup and view all the answers

Which of the following is an example of a parameter?

The average height of all students in a school Signup and view all the answers

What is the term for the process of selecting a part of the population?

Sampling Signup and view all the answers

A numerical description of a sample is called a?

Statistic Signup and view all the answers