A question

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1

i have aquestion for statisticians …

wat is the difference between AVERAGEe value and MEAN value..
suppose we have a set of data which follow a particular distribution which we dont knwo yet .. How do we compute the mean of this data ..???

Q 2 # i have exponentially distributed data ( about 20000 points)
how to compute the mean.. of this data..?

thanx …2 days to assignment submission

2

There are three mathematical terms which are said to represent the "average of a sample". In other words, "average" is a very general word that can mean any of the following three:

  1. Median - The middle value. Eg The median of 1,1,7,12,19 is 7

  2. Mean - The sum of the sample, divided by the number of values in the sample. Eg the mean of 1,1,7,12,19 is 8

  3. Mode - The most commonly occuring value in the sample. Eg the mode of 1,1,7,12,19 is 1

So, to recap today's lesson, an AVERAGE value of a sample can be either the MEDIAN, MEAN, or MODAL value of the sample.

3

Re: A question

[QUOTE]
*Originally posted by Nibss: *
i have aquestion for statisticians .....

wat is the difference between AVERAGEe value and MEAN value..
suppose we have a set of data which follow a particular distribution which we dont knwo yet .. How do we compute the mean of this data ..????

Q 2 # i have exponentially distributed data ( about 20000 points)
how to compute the mean.. of this data..?

thanx .............2 days to assignment submission
[/QUOTE]

since maddy answered your first question
i'll try to help with the second.... use EXCEL...it can do all the calculations for you!!!

4

exactly zidee behn/bhai
My professoer advised me to use excel but i cudnt find mean function in it.....
can u tell me how can we use excel to find the mean of data
and 2ndly how to generate random numbers in excel which follow lets say poisson distribution...
thanx

5

All of this information can also be found in the Excel help files.

The function is called average
There are functions in excel that generate random numbers** RAND(). Once you have a list of random numbers
just normalize them over the poissons distribution. Or you can use the function **poisson

6

Re: Re: A question

[QUOTE]
*Originally posted by zidee: *

since maddy answered your first question
i'll try to help with the second.... use EXCEL...it can do all the calculations for you!!!
[/QUOTE]

Minitab is better than Excel for quant analysis.