excel summation

  1. A

    Summation for Statistical Control Chart on Excel

    How can I do the following formulas on excel... I have a a respective column with values for each of my variables they are all changing. M changes incrementally by 1 and ni and si change with no particular pattern. Thank you ahead of time!
  2. T

    Summation Part of Erlang C Formula

    What would be the best way to write the below summation into a formula in excel? It is part of the Erlang C formula and I am looking to calculate it a number of times. Right now I have a table that changes based on the "A" value then I use a vlookup based on "N-1" to go grab that sum. I...
  3. S

    Summation of every 6 rows

    Hello I am running extensive simulations on 6 processors therefore my output data every timestep is divided into 6. Considering that there is a lot of timesteps close to a million, I need to be able to add 6 rows at a time. Example: timestep value 2 1 2...

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