Statistics

A demand analyst for a chain of gas stations has recently performed a study at one of the company's stores in which he asked customers to set their trip odometer to zero when they filled. Then, when the customers returned for their next fill-up, he recorded the miles that had been driven and wishes to construct a box and whisker plot as part of a presentation to describe the driving patterns of customers between fill-ups. The sorted sample data showing the miles between fill-ups is shown below. Construct a box and whiskers plot.

231 236 242 242 242 243 243 243 248

248 249 250 251 251 252 252 254 255

255 256 256 257 259 260 260 260 260

262 262 264 265 265 265 266 268 268

270 276 277 277 280 286 300 324 345