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08 Apr 2020, 01:02
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hazelnut
Equal grps were made to start rowing, jogging and dancing.
After 3 months, 80% of dancing grp was continuing while only 50% of rowing and jogging grps were continuing.
Conclusion: Once started, people are more likely to continue dancing.
(C) Dance is an activity for which participants are less dependent on favorable weather than jogging and rowing are.
Say we negate this - For dancing, people are as dependent on weather as for other activities.
Well then, it seems that dancing has an inherent quality because of which people like to continue it. The reason people continue it is not weather or some such external factor. It does help our conclusion that dancing is an activity that people like to continue.
Hence, negating (C) certainly doesn't break our conclusion. It is not an assumption.
Also, if you do not negate, think of it this way: (C) could explain WHY people continue dancing. But it is not an assumption required to say that people prefer to continue dancing. Our survey establishes (to whatever extent we can establish from a sample) that more people do continue dancing. The only assumption is that our survey doesn't have biases.
08 Apr 2020, 04:13
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negate assumption( choice(A) (B) (C) (D) (E))
then to examine---->which choice will make conclusion be negate, that is—dance is “not” the activity that people are most likely to continue, the one fit this requirement will be assumption
negate as below:
(A)
“more participant” change from dance to another activity
……though it’s easy to pick this one by inituitive
……this is “sufficient” but not necessary one to reach the conclusion
also there’s another flaw to this statement as we see words in this choice “after the survey ended”, if this conclusion is made after the survey ended then no matter what happen it will be invalid
(B)
joggers and rowers are more likely than dancers to become injure
--dancer’s injury accident low
--dancers more likely continue(support the conclusion rather than weaken)
(C)
dance more dependent on favorable weather/influence by weather more
--dance not more likely to continue…. how come it support the conclusion???
(D)
I can’t quite grasp what this choice really want to convey at first sight, after more thorough thinking I found that maybe use the concept of vulgar fraction to solve will be better
(choose by theirselves) ---more subjective, numerator
---------------------------------------------
(random assign) ----more objective, denominator
this vulgar fraction, if negation method applied, is lower for Jogging &Rowing/ higher for Dancing group, or say in Dancing group there have less random assign participants and more participants choose by their interest, thus the result is biased also the conclusion will break as other people have mentioned before
(E) since the stimulus says this question concern about “three equal groups”, thus the number of participants within each group won’t be different
then to examine---->which choice will make conclusion be negate, that is—dance is “not” the activity that people are most likely to continue, the one fit this requirement will be assumption
negate as below:
(A)
“more participant” change from dance to another activity
……though it’s easy to pick this one by inituitive
……this is “sufficient” but not necessary one to reach the conclusion
also there’s another flaw to this statement as we see words in this choice “after the survey ended”, if this conclusion is made after the survey ended then no matter what happen it will be invalid
(B)
joggers and rowers are more likely than dancers to become injure
--dancer’s injury accident low
--dancers more likely continue(support the conclusion rather than weaken)
(C)
dance more dependent on favorable weather/influence by weather more
--dance not more likely to continue…. how come it support the conclusion???
(D)
I can’t quite grasp what this choice really want to convey at first sight, after more thorough thinking I found that maybe use the concept of vulgar fraction to solve will be better
(choose by theirselves) ---more subjective, numerator
---------------------------------------------
(random assign) ----more objective, denominator
this vulgar fraction, if negation method applied, is lower for Jogging &Rowing/ higher for Dancing group, or say in Dancing group there have less random assign participants and more participants choose by their interest, thus the result is biased also the conclusion will break as other people have mentioned before
(E) since the stimulus says this question concern about “three equal groups”, thus the number of participants within each group won’t be different
11 Apr 2020, 05:27
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Hoozan
Hi
We must dovetail the negated answer option (C) along with the premises given in the stimulus. The following becomes apparent:
1) Negated option (C): dance is an activity for which participants are equally or more dependent on weather.
2) About half of those in the jogging and rowing groups were still participating in that activity at least twice per week after 3 months.
3) For the dance group that figure was closer to 80%.
Therefore, despite having an external factor that was equally or more important in pursuing dance, the activity had a greater retention rate. This supports the conclusion that people are more likely to continue with dance than the other activities.
Hope this helps.
