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- posted
17 years ago
wrote
Interesting... Isn't Trane basically American Standard ?
Some survey data to reinforce that:
...
But the accompanying note indicates that only the difference from the highest to the lowest two is statistically significant and the next-to-last exceeds that threshold by at best one or two points. So in reality, the chart says it is essentially a toss-up between everybody else and Goodman.
Of course, there's insufficient information published on the free-access page to allow one to determine whether the normalizations and sample sizes/relative populations, etc., are such as to make the data have any meaning whatsover (as is usually the case w/ CR imo :( ).
I think it does demonstrate one basic fact as others have mentioned -- buy cheap, get less.
;-)
Richard
Yep, and to boot, the graph scales and axis labeling are so imprecise you can't reliably pick out the numerical values to compute actual differences between computed means. It would have been much more meaningful if presented as a bar chart w/ estimate and high/low confidence limits to show the amount of overlap (and thereby also reflecting the relative precision of estimates for the various brands owing to sample size). But, that would give away too much as CR is, above all, mostly about selling CR.
It only makes sense, however, that the low-price-spread has to give up something for that position in the market so that one conclusion as noted previously I would venture is probably valid.
dpb wrote: ...
But, in all fairness, I do have to give CR credit for at least putting in the footnote about the size of the overall confidence interval between estimates -- while most folks who look at it will either ignore it entirely (as several earlier posters apparently did) or fail to understand what it means in drawing a conclusion from the data, at least it was given...
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