White paper for percentile rank formula

[Frank Berry]

Hi,

Is there a white paper that explains a formula for each of the following percentiles in spss? When there is missing values in a numeric variable ranging from 0 to 100 (all integers), would the same formula for percentiles applies to missing values in that variable? For example, an equal percentile can be obtained for values of 49, 50 - missing and 51. Or in other cases, same value of 49 could have two or more percentiles.

TIA.
Frank

  /PERCENTILES= 1 2 3 4 5 6 7 8 9 10
 11 12 13 14 15 16 17 18 19 20
 21 22 23 24 25 26 27 28 29 30
 31 32 33 34 35 36 37 38 39 40
 41 42 43 44 45 46 47 48 49 50
 51 52 53 54 55 56 57 58 59 60
 61 62 63 64 65 66 67 68 69 70
 71 72 73 74 75 76 77 78 79 80
 81 82 83 84 85 86 87 88 89 90
 91 92 93 94 95 96 97 98 99




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[Reutter, Alex]

See the algorithms document for the procedure(s) you're interested in.

http://support.spss.com/tech/Products/SPSS/Documentation/Statistics/algorithms/index.html

Using Guest/Guest as login/password.

Alex

> -----Original Message-----
> From: SPSSX(r) Discussion [mailto:[hidden email]] On Behalf Of
> Frank Berry
> Sent: Thursday, July 13, 2006 2:54 PM
> To: [hidden email]
> Subject: White paper for percentile rank formula
>
> Hi,
>
> Is there a white paper that explains a formula for each of the following
> percentiles in spss? When there is missing values in a numeric variable
> ranging from 0 to 100 (all integers), would the same formula for
> percentiles applies to missing values in that variable? For example, an
> equal percentile can be obtained for values of 49, 50 - missing and 51. Or
> in other cases, same value of 49 could have two or more percentiles.
>
> TIA.
> Frank
>
>   /PERCENTILES= 1 2 3 4 5 6 7 8 9 10
>  11 12 13 14 15 16 17 18 19 20
>  21 22 23 24 25 26 27 28 29 30
>  31 32 33 34 35 36 37 38 39 40
>  41 42 43 44 45 46 47 48 49 50
>  51 52 53 54 55 56 57 58 59 60
>  61 62 63 64 65 66 67 68 69 70
>  71 72 73 74 75 76 77 78 79 80
>  81 82 83 84 85 86 87 88 89 90
>  91 92 93 94 95 96 97 98 99
>
>