a veterinary study recorded the masses in grams of 25 kittens at
birth.
235 240 245 260 265 265 270 275 275 275 280 280 285 290 295 300 300 305 305 315 320 320 325 340 350 determine
1 the first and third quartiles
2 the 10th 25th 75th and 90th percentiles
