Difference between revisions of "Error Bars"
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* Error Bars [Bob Hausmann, Winter Workshop 1/23/2008] | * Error Bars [Bob Hausmann, Winter Workshop 1/23/2008] | ||
** Bob mentioned the need for Error Bars in his presentation at the DataShop Work Shop held in January 2008. | ** Bob mentioned the need for Error Bars in his presentation at the DataShop Work Shop held in January 2008. | ||
| + | ** Bob introduced something he's seen from another researcher: error bars used to indicate statistical significance--overlapping bars between points means no statistically significant different, but no overlap means there is statistical significant difference. This is a visual t-test. | ||
** Bob Hausmann pinged me about this a few days ago [Ryan Baker, 06/03/2008] | ** Bob Hausmann pinged me about this a few days ago [Ryan Baker, 06/03/2008] | ||
* Ability to represent error bars in graphs [Phil Pavlik, 03/18/2006] | * Ability to represent error bars in graphs [Phil Pavlik, 03/18/2006] | ||
Revision as of 19:38, 2 September 2009
Status: Requirements Done; Estimate Needed; Guesstimate: 6 weeks
User Story
As a psychologist, I want to see error bars on learning curves so I can do an "eyeball test" to see if two points are reliably different (if there error bars aren't overlapping), which will give me more confidence that the conditions are different.
Notes/Comments
- Adapted from Bob Hausmann's DataShop demo. See Error Bars on Wikipedia.
- Error Bars [Bob Hausmann, Winter Workshop 1/23/2008]
- Bob mentioned the need for Error Bars in his presentation at the DataShop Work Shop held in January 2008.
- Bob introduced something he's seen from another researcher: error bars used to indicate statistical significance--overlapping bars between points means no statistically significant different, but no overlap means there is statistical significant difference. This is a visual t-test.
- Bob Hausmann pinged me about this a few days ago [Ryan Baker, 06/03/2008]
- Ability to represent error bars in graphs [Phil Pavlik, 03/18/2006]
- Attendees of the DataShop Turns 3! event expressed interest in this item as well. [October 2008]
- Developer Note: Need to upgrade JFreeChart from v1.0.2 to v1.0.3.
See complete DataShop Feature Wish List.
