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help calculating avg growth rate.

  1. #1
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    Join Date
    02-27-2012
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    Excel 2007
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    53

    help calculating avg growth rate.

    following are the daily avg. minutes people spent listening to XYZ radio station

    month 11\01 4.9
    month 11\02 5.1
    month 11\03 4.2
    month 11\04 4.9
    month 11\05 4.9
    month 11\06 4.4
    month 11\07 4.5
    month 11\08 9.0
    month 11\09 7.3
    month 11\10 7.7
    month 11\11 8.1
    month 11\12 7.8
    month 12\01 8.1
    month 12\02 7.8
    month 12\03 7.9
    month 12\04 7.5
    month 12\05 6.1
    month 12\06 6.0
    month 12\07 7.7
    month 12\08 11.1
    month 12\09 10.8
    month 12\10 12.5

    Growth rate from Jan-11 to Oct 12 122. 4% =LOGEST(B1:B22) ^(ROWS(B1:B22) - 1) - 1


    Monthly growth 3.88% =LOGEST(B1:B22)-1

    Compound growth of 22 month 85.3% =B27*22

    586% =EXP(AVERAGE(LN(B1:B22)))-1
    6.859925026 =SIGN(B1:B22)*GEOMEAN(ABS(B1:B22))
    690% =GEOMEAN(1+B1:B22)-1
    701% =(PRODUCT(1+B2:B22))^(1/COUNT(B2:B22))-1

    Which method I use or ignore every method mentioned above? All these method i found on same forum.
    Can any one guide me best way that can give me growth rate on monthly basis and cumulative growth from jan-11 to oct-12.?

    Kind see the attached file.
    Attached Files Attached Files

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