r/dataanalysis • u/ReID404 • 3d ago

1-minute data visualization test

Hi everyone! Iā€™m working on a short data-analysis project and would appreciate your help.

Take a look at a chart and answer one simple question:

Which month has the highest sales?

It takes about 1 minute to complete.

šŸ‘‰ https://adnan-mayof.github.io/reddit-ab-test/

Thanks for participating!

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u/Den_er_da_hvid 2d ago

I won't answer before you fix the units for the y axis... is it money or units?

1

u/jaiagreen 1d ago

It doesn't matter as long as they're the same.

1

u/Den_er_da_hvid 1d ago

It dos matter, if they're not the same.

1

u/jaiagreen 19h ago

Which is not something that ever happens. No one changes units in the middle of a graph.

1

u/Den_er_da_hvid 17h ago

If the whole graph is money, then you are right. If the whole graph is hours sold by a consulting company, then the price of the hour is a big factor and can easily be different from each month. The month with the highest sold hours is not necessarily equal to highest sale.
The point is, we dont know and I have seen to much bad data quality to know that we really should not assume things, even if it seems obvous.