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Spider Running Speeds after Amputation

SpiderSpeed.Rd

Data on speed before and after amputation of a pedipalp in the spider genus Tidarren.

Usage

SpiderSpeed

Format

A data frame with 32 observations on the following 2 variables.

speed.before

speed (cm/s) before amputation

speed.after

speed (cm/s) after amputation

Source

Ramos, M., D.J. Irschick, and T.E. Christenson. 2004. Overcoming an evolutionary conflict: Removal of a reproductive organ greatly increases locomotor performance. Proceedings of the National Academy of Sciences (USA) 101: 4883-4887.

References

http://en.wikipedia.org/wiki/Pedipalp, http://en.wikipedia.org/wiki/Tidarren, http://www.pnas.org/content/101/14/4883

Examples

xyplot(speed.after ~ speed.before, SpiderSpeed)

favstats(SpiderSpeed$speed.before)
#>   min    Q1 median     Q3  max     mean        sd  n missing
#>  1.25 2.355    2.9 3.0225 3.55 2.668125 0.6415525 16       0
favstats(SpiderSpeed$speed.after)
#>   min   Q1 median   Q3  max    mean       sd  n missing
#>  2.32 3.22   3.51 4.76 5.45 3.85375 0.992632 16       0
favstats(SpiderSpeed$speed.after - SpiderSpeed$speed.before)
#>  min   Q1 median     Q3  max     mean       sd  n missing
#>    0 0.34  0.935 1.9125 3.42 1.185625 1.073778 16       0