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the difference between any two consecutive terms in an arithmetic sequence. The constant difference (d) = Tn + 1 - Tn
a statistical average; the sum of all the values divided by the number of values.
the notation (standardised set of rules and symbols) that allows us to describe functions.
the set of all the elements under consideration. The complement of the universal set is the...
the extent of the relationship between the ordering of two random variables.