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Zack Greinke: Fastball Velocity by Start

4 months ago Tiny slayor 3 comments 1 recs  | 

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interesting.......

However the math teacher in me will tell you that this could be categorized as a misleading graph because the y-axis scale (MPH) doesn’t begin at zero. For example, in the top graph, it appears that Zack threw a fastball velocity in start 19 that was nearly three times faster than in start 3 based on the length of the bars alone.

by Fernando Vina School of Linguistics on Jul 20, 2009 1:29 AM EDT reply actions   0 recs

Oh snap, my stats prof from freshman year is a royals fan!

Seriously, the guy spent an entire class period lecturing on the evils of truncated axis on graphs. Obviously, I paid close attention.

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by slayor on Jul 20, 2009 4:19 AM EDT up reply actions   0 recs

But

The point is to show the variation. A few mph on a fastball is a big deal. The graph does a pretty good job of showing this.

by ZeppelinDZ on Jul 20, 2009 11:32 AM EDT up reply actions   0 recs

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