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Lecture notes introduction in research (psychology) (PSYC201) Numbers, Hypotheses & Conclusions $7.58   Add to cart

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Lecture notes introduction in research (psychology) (PSYC201) Numbers, Hypotheses & Conclusions

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Master the intersection of statistics and psychology with these comprehensive study notes. Unravel the complexities of data analysis, hypothesis testing, and research methodologies specific to psychological studies. Whether you're delving into correlation coefficients or inferential statistics, the...

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  • April 23, 2024
  • 9
  • 2023/2024
  • Class notes
  • Shameek takoorparsadh
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Variability
Tut1 - SST

, Measures of Variability

Measures of central tendency (see Tutorial 3 of prescribed reading) tell us, in a
highly economical fashion, where the midpoint of a group of scores is, but they
do not reveal anything about the way the scores are arranged around that
midpoint. Measures of variation do exactly that – they tell us how widely
dispersed numbers are. There are three commonly used measures of variation –
 range,
 the variance, and the
 standard deviation –
Each of which helps us to understand the degree of variability in a dataset in a
different way. Measures of variability indicate the degree to which the scores
are dispersed, or different from each other.

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