Glossary
Glossary | |
These is glossary of research key terms. This glossary is intended as an aid to
professionals and non-professionals who find the world of research
somewhat intimidating. While it is impossible to cover all the terms
that can be confusing, this document briefly defines some of the more
common terms and concepts. | |
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| Standard deviation | 1. A descriptive statistic used to measure the degree of variability within a set of scores. 2. (Interval/ratio level of measurement), a standardized measure of dispersion of the data around the mean, mathematically the standard deviation is the square root of the variance and thus is standardized on the units measured and intrinsically more understandable. For example the standard deviation for the age of an adult sample could be 25 years which means that 68.2% of the population is between the mean -25 and the mean +25. If the mean is 31 then 68.2% of the population is between 6 and 56 years of age. |
| Glossary V2.0 | |
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