Ethomaz's Dismantling the Myths: Amazon.com's Best Sellers is Not Accurate to the Predict Overall Hardware Sales in US (Checking: Accuracy with Software)

[ethomaz]

POE said:

How can i chek those?
Link please   :D

All of them uses the same base URL.

http://www.amazon.com/gp/bestsellers/2014-04-14/videogames/ref=zg_bs_tab_t_bsar

Hos look at the date "2014-04-14"... this one is the weekly ranking and you can add or remove 7... so you can have these URLs:

http://www.amazon.com/gp/bestsellers/2014-04-07/videogames/ref=zg_bs_tab_t_bsar 
http://www.amazon.com/gp/bestsellers/2014-04-14/videogames/ref=zg_bs_tab_t_bsar
http://www.amazon.com/gp/bestsellers/2014-04-21/videogames/ref=zg_bs_tab_t_bsar

Understood? Now remove the day from the URL mantaing only the YEAR and MONTH.

http://www.amazon.com/gp/bestsellers/2014-04/videogames/ref=zg_bs_tab_t_bsar

So you have the Monthly ranking... change to 03 (March), 12 (December), etc.

And just the YEAR is the Yearly ranking.

http://www.amazon.com/gp/bestsellers/2014/videogames/ref=zg_bs_tab_t_bsar

 

So you you know you can use any date using this format:

YYYY
YYYY-MM
YYYY-MM-DD