percentiles

  1. M

    Calculating percentiles using individual cells instead of an array.

    So I need to calculate the 95th and 5th percentile for a specific set of cells. However, my data is 10s of thousands of rows long as it is temperatures from every day of the year over a period of 30-100 years. So I want to work out the 95th percentile for the temperature on January 1st of every...
  2. J

    formula for converting percentile to T-score or z-score

    Hi all, Does anybody know of an excel formula to convert percentiles to T-scores/z-scores? Any guidance or tips would be greatly appreciated... thanks!
  3. N

    Calculating Standard Deviations of Percentile Groups

    I am trying to calculate the standard deviation of rows of data that are in percentiles. I have not made any special subgroups. Rather, I have used COUNTIF and AVERAGEIF by establishing the range and using a cell value as the match criteria. This phrase worked once: IF(E6:E20022=G7...
  4. M

    Percentile with IF statement

    I have a spreadsheet where I am calculating average GPA by month over the course of three years. The data is pulling from a table I have on another spreadsheet. I want to find the 25th percentile for each month. The formula i'm trying to use is...

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