A student preparing for a triathlon suspected that the time she spent training in the pool was damaging her nail polish. She wished to investigate whether the color of the nail polish might make a difference. To investigate this, she mounted acrylic nails on sticks and polished them with two different color nail polishes. She soaked them together in a chlorine solution equivalent to a swimming pool’s chlorination and then tapped them 100 times on a computer keyboard to simulate daily stress. The response is the % of nail chipped off as measured by scanning images of the nails and using an image processing program.
Color: nail polish colorPctChipped: % of nail chipped off during stress
testingRows: 30
Columns: 2
$ Color <chr> "RED", "RED", "RED", "RED", "RED", "RED", "RED", "RED", "RE…
$ PctChipped <dbl> 26.7, 25.3, 31.6, 30.8, 30.2, 37.7, 28.2, 25.9, 25.9, 23.8,…# A tibble: 6 × 2
Color PctChipped
<chr> <dbl>
1 RED 26.7
2 RED 25.3
3 RED 31.6
4 RED 30.8
5 RED 30.2
6 RED 37.7