I stumbled across a most interestin artile about how none of the candidates in local government elections in a small town of Basalt in Colorado in the US were strongly in favour of growth. This is in contrast to the recent Brisbane elections. The article is Candidates talk growth in Basalt.
BASALT — Basalt residents can rest assured that none of the candidates for three open Town Council seats are lobbying for rampant, unfettered growth. That was apparent from a forum sponsored by the Chamber of Commerce on
Wednesday.The five council candidates in attendance — plus incumbent Mayor Leroy Duroux, who is running unopposed — all laid out convincing cases about their concerns and hopes for the community. They all essentially said they want Basalt to
remain a cool small town where you don’t have to be a millionaire to afford a place to live.
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Averages, medians, standard deviations, decile ranges, etc
The Following comments were received from demographer Katharine Betts of the Swinburne University.
Skilled professionals on 457 visas
I think the answer is that many people coming in on the temporary 457 visas are quite highly paid. It's a hassle for employers to bring them in (not a huge hassle, but a hassle nonetheless) and so they tend to do it more for professionals and skilled people whom they really want. Consequently it's logical that many of these people will be well paid.
However the average wages can hide big variations and it can still be the case that some people on 457 visas are exploited and underpaid.
Averages, medians, standard deviations and decile ranges
With averages (ie the arithmetic mean) a few big numbers can really skew the results. So if you get a small number of managers being brought in on big salaries this could obscure the fact that many people at the lower end were being paid low salaries.
I presume you are referring to Paul Maley's piece on page 1 of the Australian March 18? (James: Yes)
He just talks about "averages". It's not clear whether he's referring to a mean salary or a median salary. A median is a much more valid measure of central tendency where the data are skewed as it's not biased by extreme values.
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He's using ABS data and I'd expect them to use median salaries but he doesn't say that that is what he's got. Maybe he thinks the general reader will understand the word "average" and not want to be bothered by fine distinctions? But it does matter.
In any event neither measure tells us about the distribution of all the salaries. If the average used is a mean we'd need the standard deviation. If it's a median we'd want something like a decile range.