An experiment was conducted to measure the effectiveness of various feed supplements on the growth rate of chickens. A five number summary of the weights of the chicks in grams six weeks after hatching is as follows. Source: Anonymous (1948) Biometrika, 35, 214. . Min - 114 Q1-209 Median - 258 Q3-321 Max-419 1. About 2. About 3. About 4. About percent of the chicks weigh more than 209. percent of the chicks weigh more than 258. percent of the chicks weigh more than 321. percent of the chicks weigh between 209 and 321.