Analytical - web analytics for blogmasters

Besides sums, a lot of website/ weblog analysis requires averaging a set of values and looking for patterns over time. Here’s a quick review of the notation used to represent averages on this weblog. Please review the notation for sums, if you haven’t already done so. The information below builds on that review.

Terms:

1. Average = the sum of a data set of numeric values, divided by the number of values. Sometimes referred to as median.
2. Given a set, A, with N values, the average of A is Avg(A) = Sum(A)/N = (∑a_{i (i=1..N)})/N.

Any other mathematical/ statistical terms to be used will be covered when necessary.

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