can any one help me please

[Adam]

I'm impressed you went to the effort of pasting in your homework question for others to answer for you.

[Massimo Zanetti]

The secret to solve the problem, is in the arab writing, is hidden there.

Answer 1

[Image Analyst]

For #1, use data = xlsread(filename).

For 2 and 3, I don't know the difference between normalization of "decimal" method and "min-max" method. You might find the function mat2gray() helpful. It scales the min to 0, the max to 1, and linearly scales everything in between.

For #4, you can use conv(signal, kernel, 'same') where kernel is a vector of 1's that cover the 5 month range divided by the number of elements in that vector.

I don't know how to do the forecasting 3 months into the future. Perhaps you just need to use polyfit() to fit the last 5 months to a polynomial and then extrapolate out to 3 months from now. I'm attaching a polyfit demo.

[Belal Arar]

Thank you very much for this useful information