Explanations, glossary and practice questions with fundamental concepts and tips, explanations and examples per topic when encountering, understanding and applying statistics
Data is any collection of facts, statistics, or information that can be used for analysis or decision-making. It can be raw or processed, and it can be in the form of numbers, text, images, or sounds.
Reliability refers to the consistency of a measurement. A reliable measurement is one that gives consistent results when repeated under the same or similar conditions. For example, if you take a thermometer
A statistical sample is a small group of people or things that is used to represent a larger group. This is often done because it is not possible or practical to measure the entire group.
If the sample is representative of the larger group, then the results of the analysis of the sample can be used to make inferences about the larger group.
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