Archive for May 2021
Tableau Basics: SUM vs AVG
First time users of Tableau often get tripped up over the default Tableau SUM aggregation. Here is what I mean. Suppose the question is to find the average of SALES PER VISIT (sales measured across the preceding 6 months) among the males and females in a sample of 25 shoppers. The data look like this…
Read MoreCurse of Big Data
“Big data.” We checked in with Google search trends recently. Appears that “Big Data” has lost its luster search-wise…started trending down about 4 years ago. Nowadays, everything is big data? Implications of big data However, this does not mean we should lose sight of certain statistical implications associated with being “big”. Yes, large amounts of…
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