Hi Chegg, need some advice. I\'ve got 36 data entries (3 years) for a single hom

Question

Hi Chegg, need some advice. I've got 36 data entries (3 years) for a single home's solar cell production, and I'd like to do a statistical analysis. The cell's are supposed to lose efficiency at 0.5% a year. I'd like to see if that's indeed correct. With two cases: assuming sunlight is the same per year; assuming that sunlight exposure is different. How would I approach this? I think a hypothesis test is the correct approach but I'm not sure how to set it up.

Here's the tabulated data, year by year.

Month Production (kwh) Jan-13 427 Jan-14 293 Jan-15 380 Feb-13 459 Feb-14 297 Feb-15 554 Mar-13 675 Mar-14 660 Mar-15 573 Apr-13 929 Apr-14 881 Apr-15 867 May-13 905 May-14 797 May-15 920 Jun-13 798 Jun-14 917 Jun-15 840 Jul-13 830 Jul-14 945 Jul-15 823 Aug-13 766 Aug-14 832 Aug-15 940 Sep-13 838 Sep-14 742 Sep-15 770 Oct-13 624 Oct-14 590 Oct-15 665 Nov-13 519 Nov-14 451 Nov-15 461 Dec-13 246 Dec-14 311 Dec-15 333

Explanation / Answer

Since the data is a time series data, you may go through time seriesw analysis.

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