I don't see how communism would affect the statistical tools people employ to measure demand and obtain a measure of how much of something to produce.
This to me seems like asking if truth would still be true under communism.
Then again, I think I see what you're getting at. Supposedly, the invisible hand of the market is going to level everything out and make sure people get enough of what they want. However, and although economics is not my forte, I am under the impression that overproduction is quite common in capitalism.
So I think the best answer to your question is one word: better.


