topic std - sap function to calculate standart DEVIATION in Application Development and Automation Discussions

std - sap function to calculate standart DEVIATION

Former Member — Mon, 13 Aug 2007 11:59:26 GMT

hi all friends ,

for example :

i have these numbers : 13, 8, 5, 2

so result std of this must be : 4.69

which sap function can i use to calculate and get this result ?

thanks to all,

avi

Re: std - sap function to calculate standart DEVIATION

amit_khare — Mon, 13 Aug 2007 12:02:08 GMT

Check Amit's Reply -

Regards,

Amit

Reward all helpful replies.

Re: std - sap function to calculate standart DEVIATION

Former Member — Mon, 13 Aug 2007 12:03:04 GMT

try this code..

data : begin of it occurs 1,

num type p,

x_xbar type p,

end of it.

data : num1 type p value 10.

data : tot type p,l(2),

total type p. " E(x - mean)^2

data : mean type p.

data : var type p,

sd type p.

do 5 times .

it-num = num1.

append it.

num1 = num1 + 10.

enddo.

loop at it .

tot = tot + it-num.

endloop.

describe table it lines l.

mean = tot / l.

loop at it .

it-x_xbar = ( it-num - mean ) * ( it-num - mean ).

total = total + it-x_xbar.

endloop.

var = ( total ) / ( l - 1 ).

sd = SQRT( var ).

write : sd.

reward if it helps..

Regards,

Omkar.

Re: std - sap function to calculate standart DEVIATION

Former Member — Mon, 13 Aug 2007 12:07:33 GMT

Use FM: RMMATH1_VARIANCE_DEVIATION