Practical Research 2 Reviewer: Research Design, Sampling, Instruments, and Analysis

Sampling Techniques

• Stratified sampling involves selecting sub-samples proportionate in size to significant characteristics of the total population.

Measurement in Research

• Validity refers to the extent to which a research instrument measures the intended construct.
• A measurement device, like a survey, test, or questionnaire, is generally referred to as an instrument.

Types of Interviews

• A structured interview is one where the interview follows a specific format with the same line of questioning.

Sampling Techniques

• Quota sampling is a technique where researchers select people non-randomly according to some fixed quota.

Research Designs

• The purpose of a historical research design is to study past events or situations to understand their causes and effects.

Research Fundamentals

• In research, a sample refers to a subset of the population chosen for study.

Research Designs

• The purpose of a descriptive research design is to describe the characteristics of a population or phenomenon.
• Quantitative analysis refers to the process of analyzing numerical data to draw conclusions.

Research Designs

• The purpose of an experimental research design is to establish cause-and-effect relationships between variables.

Test your knowledge of practical research concepts including research design, sampling methods, data-gathering instruments, quantitative analysis techniques, and descriptive research. This quiz covers key aspects of conducting a study and analyzing the gathered data.