time series comparison (DTD, MoM)

[#1]

has someone an idea how can I compare in QlikView daily and MTD actuals to the previous week or month like in the attached example?

Thanks in advance!

[#2]

Hello,

I'm italian student of statistics... To  a make a prevision for a time series,  you should  known a something of time series theory.

However I and my girlfried HiHeisterr will publish an article to make a  confidence interval  for the prevision of time series.