 鲜花( 150)  鸡蛋( 3)
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学习过统计学吧。中值比平均值准确。具体解释可以问十年，他是数学高手。你看看下文就懂了，看% c) m9 ?% U. I: C7 Z) i
最低价格没有用的（统计学上没有任何代表意义）。3 ]- ]7 z/ ?- k' [% i, S* [- V
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Average Residential Sale Price VS. Median?* _: }* C! i! l/ g0 j- f4 u0 ?
Median and Average Sale Price are different ways of calculating a statistical average.
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$ D6 n1 A7 h" K" rAverage Residential Sale Price is the arithmetic average of a set of numbers otherwise known as the "mean". To calculate the this form of average, take all the numbers in a set and add them together then divide by how many numbers there were originally (example below).
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" ~$ Y! e) E; [Average Residential Sale Price information can be useful in establishing trends over time, but does not indicate actual prices in centres comprised of widely divergent neighbourhoods or account for price differentials between geographical areas.
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' ?: \5 z- W, P9 wThe median is another common way to calculate the average of a set of numbers. If you were to line up all numbers in a set from lowest to highest, the median would be the price that has as many numbers above it as below it (example below).1 r1 k# R1 j8 v# t0 }$ w$ c
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Median is a much better way of calculating the average sale price in a market that has large differences in price since it is not affected by several high or low priced homes which can skew the mean average sale price incorrectly.7 ~4 l6 J/ |3 t& _% O0 F
7 G' _+ ^; C. M7 P9 D qThe following is an example taken from real sold prices in Calgary.
+ ?- R# `3 G9 u8 t9 k, }! d9 Sold prices in May of 2006# B6 \$ S% Z; z* g
$ 7,000+ m! K% y2 H+ X
* ^) r! w u1 L$ 7,500
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$ 143,900
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4 b5 m' u" y8 M+ Q8 K$ 260,000
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$ 333,000. \4 \6 o2 R7 _( L
Median2 ^4 K4 p- Y X9 v# s) C7 v2 G
$ 490,000
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$ 750,000: Q7 k1 @) {* N$ O
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$ 3,000,0008 [ |" S: i$ f9 l0 L/ _) |
5 l# v" {0 v: N$ 3,475,000" x ?' X; t" ]! n; y1 v
: R @' N/ Z* |8 d9 _# z' J- e$ 8,466,400 divided by 90 P9 t* { J0 l# a* W
5 X9 |7 T/ a( b% e% R$ 940,711.114 X! a1 f& j8 M* x9 q* h
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Average Sale Price
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9 v% t, a7 V8 c( u1 {" p; UThe Average Sale Price would be $940,711 while the median would be $333,000. As you can see there can be a huge difference in the outcome of the statistical average depending on the method you choose to calculate it. In the calculation for average home price however, the median is typically the more correct number.2 T- b! C) M9 a
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+ E& t, p' i* }# f0 @+ S5 }: p原帖由 variator 于 2006-8-25 21:10 发表- w* h2 C7 o0 C/ W
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怎么又变成11,12月了, 不是8,9月吗? + S9 q4 O- J" O8 I6 K
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醉酒看没看爱城的MLS?,  , 如果看的话我们一起现在选一个区----如西区吧, 看看西区的低价SINGLE HOUSE 的底价到底如何变化? 对于我们穷人不关心那些所谓的& ...
[ 本帖最后由 醉酒当歌 于 2006-8-25 22:20 编辑 ] |
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楼主: 老杨
狗仔卡
发表于 2006-8-24 23:20
显身卡
发表于 2006-9-4 23:38
