GuardianCentauri
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- Posted: Thu, 03 May 2012 04:14:22 +0000
The rose in spring
GuardianCentauri
The rose in spring
The only friend you need in life is you. The only person you can trust is you. People always lie. And warping statistics can always be done effectively, even doing so in ways that work with Benford's Law.
I sympathize with some of the experiences and what not that you briefly described above, but can't you see how your belief that people always lie presents your perspective with a major bias in and of itself?
Also, there's a logical paradox here. If I am to take your words for granted, people always lie. That means that you are lying, which means that your statement that people always lie is... a lie.
You didn't answer my questions about whether or not you feel that you can avoid all mistakes and what solution you would come up with to calculate wage gap all by yourself.
The rose in spring
Sexual Innuendo
The rose in spring
People have bias myself included, but numbers do not. Numbers only lie when a human favricates them. Numbers are consistant. 2+2 always equals four, numbers have no emotion, they do not change without reason and they do not abandon you. Humans however are illogical and inconsistent (Not to mention backstabbers). For example, if I have 20 florescent lightbulbs in my office and they run for 8 hours for 7 days while each bulb is 40 watts, then my office will be running 198 killowatts in May. That number doesn't change. If it costs me .15 cents per killowatt an hour, then those lights will be costing me $29.70 that month. That doesn't change unless a bulb goes out or the company changes the price. Such money adds up to $311.6 per year assuming there is work 365 days a year. That is the evidence I am talking about. If you have doubts, then I can give you the numbers.
Because I myself made it and I trust myself. Anyway, let me elaborate since you need the numbers.
There are 31 days in may, I have 20 florescent bulbs in the office, they run 8 hours a day at 40 watts per hour
So we have 20*40 = 800 watts an hour
800*8 = 6,400 watts a day. So 6.4 kilowatts
6.4*31 = 198.4 kilowatts in May. Rounded for simplicity, 198
198*.15 (Cost kwh) = $29.70 for that month.
Then we do the annual math. Not every month has 31 days, Februrary, April, June, September, November do not. There are 3 days missing in Feb
29.70*12 = 356.4
3+1+1+1+1=7 for days missing
7*6.4= 44.8 kwh fewer
356.4 - 44.8 = 311.6
Someone else double check my math please (because as I said, it's important for people to check each others' work), but I think you've already made a mistake here. Your 356.4 number is an amount in dollars, so it's $356.40. However, you're subtracting a number that is in kW, 44.8, so that can't accurately give you the final dollar amount for the year.
20 bulbs * 0.04 kW per bulb * 8 hours per day * 365 days per year * $0.15 per kWh = $350.40
Also, it depends on what the exact objective of your question is (which is where the logic comes in on problem solving rather than all of it being purely math). If you were calculating how much it will cost you this year, 2012, you need to take into account that it is a leap year. That means you're actually multiplying by 366 days, thus the result will be $351.36.
If you meant to calculate the average amount per year, then you need the approximate average of days per year after leap years are taken into consideration. You can calculate this by the following equation:
365 + 1/4 − 1/100 + 1/400 = 365.2425 (Link)
That should bring the average yearly cost to approximately $350.63 (rounded down on the last cent).
Additionally, my electricity bills include other fees and charges like transmission line usage, administration fees, etc. as well as taxes applied to the subtotal, so those would have to be accounted for if your bill includes such things as well.
I recognize that I may be overthinking your question since it's meant to be more theoretical, but I'm highlighting possible things you might forget to include in a real life example, thus you could still make a mistake even though raw math itself does "not change without reason" (yes, I know what you mean by that).
The reason you got 350.63 is because the 44.8 was not calculated into money. I'm only giving a very elementary aspect of accounting. Once you get that, you also have to add the computers, the AC, the security systems, the phones and so on before you go to other expenses like wages. Accounting is a science in of itself.
I brought it up because you subtracted the 44.8 from the amount in dollars to get the final amount in dollars. That doesn't work because you've mixed up what the numbers represent.
Your final equation from above:
The rose in spring
356.4 - 44.8 = 311.6
That means:
$ - kW = $
You can't do that. That reminds me of mistakes I used to make in physics where I forgot to keep on top of what each number's units of measurement were (ie, metres for distance, m/second for velocity, m/s^2 for acceleration, etc.).