I have a set of 1000 numbers. I want to divide them into 20 groups each containing 50 numbers. The condition for division is that average and standard deviation of all 20 groups should be close to each other. I want to solve this problem with solver or open solver (add-in to excel) of excel. Any comments is highly appreciated.
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So I have a sheet where I am assigning levels to individuals based on their training, IE: Level 4 SME, Level 3 trained and can train others, level 2 trained, and level 1 untrained. For each shift, I want at least 2 level 2 individuals if so readiness is 100% anything above that is over percentage(which is fine) but anything less I want it to be less than 100%. I am trying to do this with formulas but it is not working the way I want.
Table Layout
Formulas
The above example would show more than 100% becuse there is more then two people at level 2 I wish there was a way to loop in excel to allow for me to increment and number for every count of 2.
How about this
=IF(COUNTIF(B2:E2,">=2")>=2,">=100%","not ready")
you can do a certain amount of looping in the UI with the LAMBDA function, if you have Office 365, although I'm not clear as to your requirement.
=COUNTIF(B2:E2,">=2") * 0.5 --> format as percent
how to generate auto number from 0,000000000000000000000000000001 till 0,999999999999999999999999999999 at excel and the format cell is number ?
i've tried for dragging mouse , but i guess thats so terrible
You're out of luck.
Excel uses a 64 bit double precision IEEE754 floating point type for numbers (along with some clever rounding tricks). That gives you 53 bits of precision which loosely translates to 15 decimal significant figures of accuracy.
You will not be able to descriminate between numbers with such a small interval between them, if the total range is between 0 and 1.
(There's also the small matter of there not being enough space in a workbook to represent all those numbers.)
I made a little test machine that accidentally created a 'big' data set:
6 columns with +/- 550.000 rows.
The end result I am looking for is a graph with 6 lines, horizontal axis 1 - 550.000 measurements and vertically the values in the rows. (capped at 200 or so). Data is a resistance measurement that should be between 0 - 30 or very big (borken), the software writes 'inf' in these cases.
My skill is limited to excel, so what have I done until now:
Imported in Excel. The measurements are valuable between 0 - 30 and inf is not good for a graph, so I did: if(cell>200){200}else{keep cell value}.
Now making a graph is a timely exercise and excel does not like this, result is not good.
So I would like to take the average value of 60 measurements to reduce the rows to below 10.000. So =AVERAGE(H1:H60)
But I cannot get this to work.
Questions:
How do I reduce this data set and get a good graph.
Should I switch
to other software that is more applicable?
FYI: I already changed the software of the testing device to take the average value of a bunch of measurements the next time... But I cannot repeat this test.
Download link of data set comma separated file 17MB
I think you are on the right track, however my guess is that you only want to get an average every 60 rows and are unsure how to do this.
Using MOD(Number, Divisor) inside an if statement will let you specify that the average should be calculated only once in every x number of cells.
Assuming you'll have one row above your data table for headers, you are looking for something along the lines of:
=IF(MOD(ROW(A61),60) = 1,AVERAGE(H2:H61),"")
Once you have this you can filter your average column to non-blank values and use this to create your graph.
I want to use the RAND() function in Excel to generate a random number between 0 and 1.
However, I would like 80% of the values to fall between 0 and 0.2, 90% of the values to fall between 0 and 0.3, 95% of the values to fall between 0 and 0.5, etc.
This reminds me that I took an applied statistics course once upon a time, but not of what was actually in the course...
How is the best way to go about achieving this result using an Excel formula. Alternatively, what is this kind of statistical calculation called / any other pointers that I can Google around for.
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Use case:
I have a single column of meter readings, which I would like to duplicate 7 times (each column for a new month). each column has 55 000 rows. While the meter readings need to vary for each month, when taken as a time series, each meter number should have 7 realistic readings.
The aim is to produce realistic data to turn into heat maps (i.e. flag outlying meter readings)
I don't think that there is a formula which would fit exactly to your requirements. I would use a very straightforward solution:
Generate 80% of data using =RANDBETWEEN(0,20)/100
Generate 10% of data using =RANDBETWEEN(20,30)/100
Generate 5% of data using =RANDBETWEEN(30,50)/100
and so on
You can easily change the precision of generated data by modifying the parameters, for example: =RANDBETWEEN(0,2000)/10000 will generate data with up to 4 digits after decimal point.
UPDATE
Use a normal distribution for the use case, for example:
=NORMINV(RAND(), 20, 5)
where 20 is a mean value and 5 is a standard deviation.
I have large scale data (700K rows), and I'm trying to count the number
of appearance of a word within the rows, and do so for also many times (50K iterations).
I'm wondering if Excel is appropriate platform, using VBA or maybe COUNTIFS, or should I use different Platform?
If so, is there a platform that has similarity points to Excel and VBA?
Thanks!
With your small sentences in column A and the 700k lines in column A of Sheet1, this formula will count the occurrences. It's an array formula and must be entered with Ctrl+Shift+Enter.
=SUM(--NOT(ISERR(FIND(A2,Sheet1!$A$1:$A$700000))))
To calculate 200 small sentences took about 20 seconds on my machine. If that's an indication, it will take about 1.5 hours to calculate 50k small sentences. You should probably find a better tool or at least hit calculate right before you leave for lunch. Definitely test it on a smaller number to make sure it gives you the answers you want. If you don't have to do this often, maybe 1.5 hours is palatable.