A sports equipment manufacturer has developed a new reasonably priced golf ball that it hopes will allow average golfers to hit the ball straighter. A concern is that this new technology might impact on the distance that the ball travels. To compare distances, Sarah, a company researcher, conducts an experiment where 20 current balls and 20 new balls are subjected to distance tests, using a mechanical hitting device for consistency. The results of the tests, with distances given to the nearest metre, are given in Table 1. Table 1 Distances travelled by golf balls Current golf ball New golf ball 292 299 291 292 293 285 295 288 280 283 305 273 280 286 291 311 283 308 296 292 292 294 309 281 311 286 302 302 294 296 297 303 287 298 282 293 300 290 297 284 Sarah considers displaying the data as a pair of dotplots. Do you think that this is a good idea for these particular  datasets? Give a brief reason for your answer.

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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A sports equipment manufacturer has developed a new reasonably priced
golf ball that it hopes will allow average golfers to hit the ball straighter.
A concern is that this new technology might impact on the distance that the
ball travels. To compare distances, Sarah, a company researcher, conducts
an experiment where 20 current balls and 20 new balls are subjected to
distance tests, using a mechanical hitting device for consistency.
The results of the tests, with distances given to the nearest metre, are given
in Table 1.
Table 1 Distances travelled by golf balls
Current golf ball New golf ball
292 299
291 292
293 285
295 288
280 283
305 273
280 286
291 311
283 308
296 292
292 294
309 281
311 286
302 302
294 296
297 303
287 298
282 293
300 290
297 284

Sarah considers displaying the data as a pair of dotplots. Do you think that this is a good idea for these particular  datasets? Give a brief reason for your answer.

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