For Problems 15-20. use the specified number of classes to do the following.
(a) Find the class width
(b) Make a frequency table showing class limits, class boundaries, midpoints, frequencies. relative frequencies, and cumulative frequencies.
(c) Draw a histogram.
(d) Draw a relative- frequency histogram.
(e) Categorize the basic distribution shape as uniform, mound-shaped symmetric, binodal, skewed left, orskewed right.
(f) Draw an ogive.
(g) Interpretation Discuss some of the features about the data that the graphs reveal. Consider items such as dat
Sports: DogsledRacing How long does it take to finish the 1161-mile Iditarod Sled Dog Race from Anchorage to Nome. Alaska (see Viewpoint)? Finish times (to the nearest hour) for 57 dogsled teams are shown below.
261 | 271 | 236 | 244 | 279 | 296 | 284 | 299 | 288 | 288 | 247 | 256 |
338 | 360 | 341 | 333 | 261 | 266 | 247 | 296 | 313 | 311 | 307 | 307 |
209 | 306 | 277 | 283 | 304 | 305 | 288 | 290 | 288 | 289 | 297 | 299 |
332 | 330 | 309 | 328 | 307 | 328 | 245 | 291 | 295 | 298 | 306 | 315 |
310 | 318 | 318 | 320 | 333 | 321 | 323 | 324 | 327 |
Use five classes.
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Chapter 2 Solutions
Understanding Basic Statistics
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