Podcast
Questions and Answers
What is the purpose of Cochran's correction formula?
What is the purpose of Cochran's correction formula?
Which method of collecting data involves researcher-completed instruments?
Which method of collecting data involves researcher-completed instruments?
What does Yamane's formula determine?
What does Yamane's formula determine?
Which scale consists of categories organized in an ordered sequence?
Which scale consists of categories organized in an ordered sequence?
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What is the purpose of a rating scale in research?
What is the purpose of a rating scale in research?
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What is the defining feature of a ratio scale that differentiates it from an interval scale?
What is the defining feature of a ratio scale that differentiates it from an interval scale?
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In Cochran's formula, what does 'p' represent?
In Cochran's formula, what does 'p' represent?
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In a data set, what are measurements or observations collectively referred to as?
In a data set, what are measurements or observations collectively referred to as?
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Which method of collecting data involves subject-completed instruments?
Which method of collecting data involves subject-completed instruments?
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What is the role of an independent variable in a research study?
What is the role of an independent variable in a research study?
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Which scale reflects equal differences between numbers in magnitude but lacks an absolute zero point?
Which scale reflects equal differences between numbers in magnitude but lacks an absolute zero point?
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What distinguishes a nominal scale from other scales?
What distinguishes a nominal scale from other scales?
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What is the purpose of a questionnaire?
What is the purpose of a questionnaire?
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Which of the following is an example of a nominal scale of measurement?
Which of the following is an example of a nominal scale of measurement?
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What is Cochran's correction formula used for?
What is Cochran's correction formula used for?
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Which question design principle suggests starting with demographic questions?
Which question design principle suggests starting with demographic questions?
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What should be avoided when designing a questionnaire?
What should be avoided when designing a questionnaire?
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Which level of measurement involves an ordered series with equal intervals between consecutive points?
Which level of measurement involves an ordered series with equal intervals between consecutive points?
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Study Notes
Scales of Measurement
- A nominal scale reflects categorization with no inherent order or equal differences, distinguished from other scales by lacking any magnitude or order.
- An ordinal scale consists of categories organized in an ordered sequence.
- An interval scale reflects equal differences between numbers in magnitude but lacks an absolute zero point.
- A ratio scale has an absolute zero point, differentiating it from an interval scale.
Data Collection
- Researcher-completed instruments involve researchers collecting data directly from participants.
- Subject-completed instruments involve participants completing questionnaires or surveys themselves.
Questionnaires
- The purpose of a rating scale is to quantify opinions, attitudes, or behaviors.
- A questionnaire is used to collect self-reported data from participants.
- When designing a questionnaire, avoid leading questions and ensure clarity and concision.
- The principle of starting with demographic questions helps to build rapport and increase respondent engagement.
Statistical Analysis
- Cochran's correction formula is used to adjust the chi-square value when there are expected frequencies less than 5.
- In Cochran's formula, 'p' represents the population proportion.
Research Design
- An independent variable is the variable manipulated by the researcher to observe its effect on the dependent variable.
- Data collected in a study are collectively referred to as observations or measurements.
Statistics
- Yamane's formula determines the sample size required for a study.
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Description
Test your knowledge on designing questionnaires for data collection. Learn about types of questions, attitude scales, and instructions for creating effective questionnaires.
