Items tagged with var var Tagged Items Feed

If I have  the following..or different numbers, but 2 different arrays I need to calculate sample mean & variance

Array A:=([1,1,1,0,0,3,2,4])

and

Array B:=([2,1,0,1,3,3,4,1])

what formula do I use to force Maple 16 to calculate the sample mean and the sample variance?

I am trying to write a script that will read in vector files using ImportMatrix, perform a simple calculation then output a matrix file using ExportMatrix.

The difficulty I am having is that I would like to do this on a number of files,

eg.

for i from 1 to 600 do

Mi:=ImportMatrix(rowi):

do calc....

ExportMatrix(matrixi,Mi):

end do:

The variable i is in italics...

I have the following procedure that I am working with. I would like to store the result of the procedure in a variable called "result".

[code]
f := proc(result, x)
     if x <= -7 then
         result :=  1:
     elif x > -7 and x <= 7 then
         result := 2:
     elif x > 7 then
 ...

good say !

I want for my work to calculate the International Equation of State of Seawater

but when i enter my fonction in mapple: it is like mapple don't recognise the second variable s:

>t:= -> t;
s:= -> s;

> g :=(t, s)-> 999,842594+6,793952*10^(-2)*t-9, 95290*10^(-3)*t^2+1, 1685*10^(-4)*t^3-1, 120083*10^(-6...

I want to minimze VaR (the 5th percentile for the return distribution) with LP.
However, the way I have specified the problem does not work for some reason, why?


restart:
with(Optimization):
with(LinearAlgebra):

nstock := 20:
n := 15:

R := RandomMatrix(n, nstock, generator = -15 .. 15, outputoptions = [datatype = float[8]]):
W := Matrix(nstock, 1, [seq(w[i], i = 1 .. nstock)]):
data1 := Array(Multiply(R, W));