denote This is a function that allows the user to insert abbreviations in the formula, explain them and make the needed computations
denote(abbr, expr, info)
expr e.g., x denotes a^2 + b
Abbreviation used in the text to refer to the calculation, for example 's_p' for the pooled variance.
Expression: calculations to be made in order to obtain the value to which the abbreviation refers to.
Information: Explanation of the formula used to provide the value of the abbreviation. e.g. 'the pooled variance'