Finish Times (To the Nearest Hour) for 57 Dogsled Teams

Multiple Choice

Finish times (to the nearest hour) for 57 dogsled teams are shown below. Use five classes. Categorize the basic distribution shape as uniform or rectangular, mound-shaped symmetric, bimodal, skewed left, or skewed right. $$\begin{array} { l l l l l l l l l l l l } 261 & 271 & 236 & 244 & 279 & 296 & 284 & 299 & 288 & 288 & 247 & 256 \\338 & 360 & 341 & 333 & 261 & 266 & 287 & 296 & 313 & 311 & 307 & 307 \\299 & 303 & 277 & 283 & 304 & 305 & 288 & 290 & 288 & 289 & 297 & 299 \\332 & 330 & 309 & 328 & 307 & 328 & 285 & 291 & 295 & 298 & 306 & 315 \\310 & 318 & 318 & 320 & 333 & 321 & 323 & 324 & 327 & & &\end{array}$$

A) approximately uniform or rectangular
B) approximately mound-shaped symmetric
C) approximately skewed left
D) approximately skewed right
E) approximately bimodal