18 Questions
What is the primary purpose of a nominal variable?
To name, label or categorize particular attributes
Which of the following is an example of an ordinal variable?
Rating of a product on a scale of 1 to 5
What is the minimum value of reliability considered as 'excellent' according to Hinton et al. (2004)?
0.90
What is the relationship between reliability and validity?
A test must be reliable and valid
Which of the following is NOT a characteristic of a nominal variable?
It has an intrinsic ordering of categories
What is the second level of measurement?
Ordinal variable
What is the primary characteristic of nominal variables?
They take qualitative values representing different categories.
Which type of variable is an extension of nominal variables and takes values with an order or rank?
Ordinal variables
What is the key feature of interval variables?
Every point in the scale is equidistant.
Which type of variable is used to measure values with a true zero value?
Ratio variables
What is the primary purpose of measurement strategies in research?
To collect data through various methods
What is the main characteristic of an interval variable?
Each point is placed at an equal distance from one another.
What is the term for the tools or methods used to collect data in research?
Information collection methods
What type of variable is height an example of?
Ratio variable
What is the difference between an interval variable and a ratio variable?
Ratio variables have a zero value, while interval variables do not.
What is an example of an interval variable?
Temperature
What is the purpose of pre-testing in research?
To check the clarity and context of the research instructions and questions
What is the minimum reliability suggested for an exploratory or pilot study?
0.60
Test your understanding of statistical variables, including their measurement and reliability, as well as the different types of variables such as nominal variables. Learn about the cut-off points for reliability and more!
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