Without knowing something about how data is dispersed, measures of central tendency may be misleading. For example, a residential street with 20 homes on it having a mean value of $200,000 with little variation from the mean would be very different from a street with the same mean home value but with 3 homes having a value of $1 million and the other 17 clustered around $60,000. Measures of dispersion provide a more complete picture. Dispersion measures include the range, average deviation, variance, and standard deviation.
Range
The simplest measure of dispersion is the range. The range is calculated by simply taking the difference between the maximum and minimum values in the data set. However, the range only provides information about the maximum and minimum values and does not say anything about the values in between.
Average Deviation
Another method is to calculate the average difference between each data point and the mean value, and divide by the number of points
to calcuate the average deviation (mean deviation). However, performing this calcuation will result in an average deviation of zero since the values above the mean will cancel the values below the mean. If this method is used, the absolute value of the difference is taken so that only positive values are obtained, and the result sometimes is called the mean absolute deviation. The average deviation is not very difficult to calculate, and it is intuitively appealing. However, the mathematics are very complex when using it in subsequent statistical analysis. Because of this complexity, the average deviation is not a very commonly used measure of dispersion.
Variance and Standard Deviation
A better way to measure dispersion is to square the differences before averaging them. This measure of dispersion is known as the variance, and the square root of the variance is known as the standard deviation. The standard deviation and variance are widely used measures of dispersion.
Helpful blog, bookmarked the website with hopes to read more!
Really nice information, thanks!
strong almanac you’ve latch on to
very good \o/
This blog post gives the light in which we can observe the reality. this is very wonderful one and gives indepth information. many thanks for this great article! My kind regards, Carisa.
I’m having a weird problem I can’t get my reader to pickup your rss feed, I’m using google reader by the way.
This fits well, Where there is smoke, there is fire.
good quality post thanks
I’ve meant to post about something like this on my website and you gave me an idea. Thank you.
When I click your RSS feed it puts up a whole lot of unformatted html, is the issue on my reader?
Hey, just looking around some blogs, seems a pretty nice platform you are using. I’m currently using WordPress for a few of my sites but looking to change one of them over to a platform similar to yours as a trial run. Anything in particular you would recommend about it?
thanks good post
This blog is pretty cool! How did you make it !?
Like your site, I have been reading quite a lot about this recently and it is beneficial to get lots of unique bits of information and points of view. Look forward to reading more.
When are you going to post again? You really entertain me!
There are some interesting points in time in that clause but I don’t know if I see all of them eye to eye . There is some validness but I will hold opinion until I look into it further. Good article , thanks and we want more! Added to FeedBurner as well.
Yet again you come out with great article. often that you find that kind of information and written homework, and material.
This is some genuinely helpful info: thank you very much for offering this to us
Yet again you come out with document. discover that kind of information article customer, and material.
You made some good points there. I did a search on the topic and found most people will agree with your blog. Now, don’t get me wrong; I am a big boxing fan.
Hey man, was just browsing through the web looking for some information and came across your post. I am impressed by the information that you have on this blogsite. It shows how well you understand this subject. Bookmarked this page, will come back for more.
My hubby and I arrived here seeing as this blog site was tweeted by a girl I was following and am very I made it here.
very good \o/
for everyone remarkable intriguing . I think what made it so good had to say thanks again!
is among the. lately. figured
Escort Agency 1157 Lex Avenue New York, NY 10075 718 475-9412
Your place is valueble for me. Thanks!…
Hello man do you’r have old documents ? I relish letter develop for my friend … ..
Hello admin do you’r had news sites ? I approve article evolve so my friend … ..
Hi guy do you had other archives ? I deal letter build up pro my friend … ..
Hi friends did you have other sites ? I into clerical developing for my friend … ..
Hello friend do you’r have other archives ? I liked clerical evolve for my dad … ..
Hello guys did you’r had other documents ? I relish letter build up so me … ..
Hi guy do you had old sites ? I applaud article improve for me … ..
This is really a extremely beneficial read for me, Have to admit you might be 1 in the most effective bloggers I ever saw.Thanks for posting this informative article.
Hello admin do you’r have new articles ? I like clerical cultivate so me … ..
Hello man do you have old articles ? I deal letter improve for my friend … ..
Hello admin did you’r had other archives ? I appreciate article cultivate for my dad … ..
Hello admin did you have other sites ? I enjoy article build up for me … ..
Hi guy do you’r have old articles ? I look after article build up for my dad … ..