Cara recorded the number of miles she walked each day for 12 days. Her data is listed below. Find the first and third quartiles of the data set.
[math]\,\,\,\,\,[/math]3.8 [math]\,\,\,[/math] 2.1 [math]\,\,\,[/math] 3.5 [math]\,\,\,[/math] 4.2 [math]\,\,\,[/math]1.2 [math]\,\,\,[/math] 2.4 [math]\,\,\,[/math] 2.5 [math]\,\,\,[/math] 4.5 [math]\,\,\,[/math] 3.5 [math]\,\,\,[/math] 1.5 [math]\,\,\,[/math] 3.7 [math]\,\,\,[/math] 2.8