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Popup November 15, 2012 um 9:44 am

I simply don’t believe that college textbooks increased by 186% in 2004 alone!

The graph surely represents cumulative increase since 1986, but it does so in a rather sloppy way.

Nate Hoffelder November 15, 2012 um 3:31 pm

I thought the graph showed the cumulative increase over time, not proportional.

Popup November 15, 2012 um 4:25 pm

Yes, that’s what it looks like, but the graph is labelled 'annual percentage increased'.

The data might well be correct, but when it’s presented in such a sloppy fashion it’s hard to take it seriously.

Frustrated November 16, 2012 um 6:17 am

What a great, unintentional example of the kinds if poor presentation you are likely to get without a professional author and editorial team. You don’t see this in professional textbooks. Perhaps you do get what you pay for.

Nate Hoffelder November 16, 2012 um 7:32 am

You must not follow the same textbook publishing circles I do. This kind of mistake is less uncommon in paid textbooks than you might think.

And what makes you say that the folks who release an OEM textbook aren’t pros?

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