Föreläsning 12a Flashcards
(11 cards)
What is a nominal scale?
A scale used for labeling variables without any quantitative value; it categorizes data.
What is an ordinal scale?
A scale that denotes order among values but not the magnitude of difference between them.
What is an interval scale?
A numeric scale where intervals between values are meaningful, but there is no true zero.
What is a ratio scale?
A scale with a meaningful zero point, allowing for statements about how many times greater one object is than another.
What is central tendency?
It refers to the middle or center of a data set; commonly measured with mean, median, or mode.
What is dispersion in statistics?
The extent to which data values vary; measured with range, variance, or standard deviation.
What is correlation?
A statistical measure that expresses the extent to which two variables are linearly related.
What is reliability in research?
The degree to which an assessment tool produces stable and consistent results.
What is validity in research?
The extent to which a test measures what it claims to measure.
What are examples of data collection methods?
Surveys, experiments, observations, and existing data analysis.
What distinguishes qualitative from quantitative analysis?
Qualitative focuses on non-numerical data and meaning, quantitative focuses on numerical data and statistical methods.
