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Questions tagged [statistics]

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3
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0answers
28 views

Are there any articles that describe to correlation between the forecast errors for renewable energy resources, depending on the distance?

In an article by Zhang et al., the authors describe how the (normalized) forecast errors of different renewable energy sources (like solar panels and wind mills) are correlated. To that end, they ...
6
votes
1answer
200 views

What is the number 1 country by global installed wind capacity: the United States or China?

In the following graph: We see that China surpassed every single country in wind energy production, except the United States. But these statistics are up to 2009 only. So my question is: what about ...
5
votes
1answer
51 views

What is the % of energy produced per year which is renewable energy (including hydropower, biomass, …) in the U.S. and in the whole world?

I would like to know what is the % of energy produced per year which is renewable energy (including hydropower, biomass, wind, geothermal, solar) : in the United States in the entire world . And ...
6
votes
2answers
263 views

Analysis of Water Usage by Family Demographics

I want an analysis of daily water usage that breaks out the data by family type and size in the United States. (Although I am happy to get usage data by demographics for any part of the world if that ...
7
votes
1answer
127 views

Instructions for making, and comparisons of, *small* solar thermal collectors

The web has probably thousands of pages with instructions on how to build solar devices for heating air, water, and probably things I've never even thought of. Wikipedia describes different types of ...
7
votes
2answers
104 views

Metal use per person

Has the metal 'consumption' of consumers has risen over the last, say 30 years (arbitarily choosen number - anything similar scale would be interesting). I'm interested in both the amount that is '...