Excel & Statistics 44: Skew & SKEW function

Dear All,

Does anyone know how to create Skewed distribution charts, when knowing the mean, standard deviation and skewness ?? (For example, mean - 50, Standard deviation = 25%, skewness - 3.3)

I have no problem creating a normal distributed chart, but including skewness is not straightforward. I believe it maybe involve lognormdist function, but I am not familarly with how they function, so any explaination involving Lognormdist needs to assume I know nothing.

Thanks

Paul

If X1 yes then X2 yes

If X1 no then X2 no

If yes at all then x1 >=200000

I need the constraint to put into excel to formulate a model

Need to have the answer in 15 minutes if possible. Thanks for help.

Hi everyone, first thanks for the help.

I am trying to create a histogram and let me explain some of the data.

I have a list of data separated like so:
3.5
3.6
3.8
3.8
3.9
3.9
etc...

Now I need to calculate the frequencies of these like so:
3.5 (up to but not including) 4.0
4.0 (up to but not including) 4.5

I can count out the frequencies myself but i need to create a histogram (bar graph) with the y axis as the frequency and the x axis as the IMR(infant mortality rate: ie the 3.5 (up to but not including) 4.0).

I am having problems with calculating the frequencies because when setting the bin values because they include 4.0.

If this is confusing I can provide some more information, but cannot find a good tutorial that would create a histogram anywhere remotely close to the histogram i drew by hand.

Hi Lords and Ladies!

I was wondering if there are any statistical tools in excel?

What I need is a comparison program to do the following:

Column A: abcdefgh
Column B: bcaghfrnreo
Column C: 80% match (roughly)

Is that possible to do in excel?

Regards,
Don Defy

I have a data set based on an uneven distribution of cards in a 60 card deck, each with a value ranging from 0-5.

I need to build a probability distribution of all the random samples of 10. So, how many random sets of 10. have an average value of 1 (or a total of 10) etc.

Then, I need to build a variable distribution so that it changes as I change the sample size. So, with a sample of 20 cards, what does the distribution look like?

Can this be done in excel? Should I post what I have now to work with?

Morning All,

Does anyone know of a free tutorial that can explain how to get statistical data in Excel? - I have seen it done before (in excel) for 'Linear regression', I am wondering if the same can be done for "Polynomal"?

Rgs

Neville

I am having difficulty setting up a Excel sheet for the following problem.

An industrial Engineer at ABC Products wants to determine whether there are more units produced on PM shift then AM Shift.

Sample of 54 Am workesr with a mean number of units produced is 345 with a standard deviation of 21.

Sample of 60 PM workser with a mean number of units produced is 351 with a standard deviation of 28 units.

Significance level is .05

Trying to figure out if the PM shift is larger.

Hi,
I was hoping someone could help me with this particular statistics+excel problem that I cannot solve, or, at least need some confirmation that I am solving it correctly...

MY DILEMMA: Let's say I am asking people to choose their favorite letter(s) ranging from a-vvv (1-100). I ask 9 people to choose their favorites, but they can't choose more than 100 #'s (obviously since a-vvv represents 100 letters). Once I gather the information, the only way I know how to create the proper order is to AVERAGE the data by inputting zero into the fields/letters that were not chosen (since no one chose all 100 letters). My question is... HOW DO I PROPERLY ORDER THE "LETTERS" FROM MOST TO LEAST POPULAR BASED ON THE SUBMISSIONS??? I realize this is a statistics problem, but I'm hoping something efficient can be done in excel.

I've also attached the working excel file to use as a working document. Feel free to PM if you would like to attach an excel file.

Thanks in advance everyone!

-Ryan

Hi,

I have a lot of data and I am struggling to decide the best statistical analysis to use for displaying it.

Basically, I have many different scores from 1-10 for assessments that are carried out in our practice. There will be many scores at every number between 1-10 and one obvious way I can do it is calculate the average. However, I find this masks the actual results of my data and so I am investigating other methods of analysing and presenting this data.

Chart options would be particularly welcomed as Excel's default is quite limited.

Using Excel 2003, Windows XP.

Thanks in advance.