A study examined cholesterol
levels of people who had smoked for 25 years and people of similar ages who had
smoked for no more than 5 years and then stopped.
Smokers
|
Ex-smokers
|
|||||
225
|
211
|
209
|
284
|
250
|
134
|
300
|
258
|
216
|
196
|
288
|
249
|
213
|
310
|
250
|
200
|
209
|
280
|
175
|
174
|
328
|
225
|
256
|
243
|
200
|
160
|
188
|
321
|
213
|
146
|
225
|
237
|
213
|
257
|
292
|
232
|
267
|
232
|
216
|
200
|
271
|
227
|
216
|
243
|
200
|
155
|
238
|
163
|
263
|
216
|
271
|
230
|
309
|
192
|
242
|
249
|
183
|
280
|
217
|
305
|
242
|
267
|
243
|
287
|
217
|
246
|
351
|
217
|
267
|
218
|
200
|
280
|
209
|
217
|
183
|
228
|
|
Draw a histogram for each of these data sets.
Would a histogram with unequal widths be more suitable?
Write a comparison of the two data sets.
If you need support on this task click here for a different question to have a go at first.
If you need more of a challenge, particularly looking at how to read histograms then click here.
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