Therefore, any decision aimed at addressing the problem of falling circulation must be based on more thorough investigation to gather sufficient data in order to narrow down and locate the actual causes of the problem.
From the survey quoted in the argument, however, we find no sign of such procedures for random sampling, and have good reason to doubt if the sample is representative enough to reflect the general attitudes of all workers as a whole.
When samples are used to make general claims about a particular group, the samples should be close enough in time to the generalization they are used to support, so that historical changes will not invalidate the generalization.
The problem is that the two situations are not similar enough to justify the analogical deduction.
The argument rests on the gratuitous/unreasonable assumption thatApias work and quality are more superior to Macadam.
The arguer fails to establish a causal relationship betweenthe homework frequency and the performance of students.
The arguers conclusion depends on the questionable assumption thatBecton Pharmaceuticals will not be able to maintain its present position in the market.
The arguer fails to provide any information concerningthe performance of the new quality control manager.
The reasoning thatall employees at Acme Publishing Company need to improve their reading speed is open to doubt/doubtful/suspicious/unreliable/problematic/questionable/unconvincing/unfounded/unwarrantec/groundless.
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