S = standard deviation of a sample Defined here in Chapter 3 SD (or sd) = standard deviation Defined here in Chapter 3 SEM = standard error of the mean (symbol is σ x̅) Defined here in Chapter 8 SEP = standard error of the proportion (symbol is σ p̂) Defined here in Chapter 8 X (capital X) = a variableGet the top SP abbreviation related to Statistics The standard deviation ( s) is the average amount of variability in your dataset It tells you, on average, how far each score lies from the mean The larger the standard deviation, the more variable the data set is There are six steps for finding the standard deviation List each score and find their mean
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