July 23, 2013

## Can someone help me calculate the energy of transformations?

The average input is 800 MD and the average output is 200 MW. What is the efficiency? Only answer this if your certain you know the correct answer!

Efficiency = Work Output / Work Input x100%

If it was 800 MW, the efficiency is 200 MW / 800MW x100%= .25 x 100% = 25% efficiency.

## Is there an equip spell card that raises a monster’s attack for every card or monster card in the graveyard?

I’m working on a skull servant deck, and i think that this card, if it exists, could be EXTREMELY helpful to my deck. What is it called?

Not really. Closest thing would be Deal of Phantom which gives you x100 per monster card in the graveyard to one monster, but that’s only for one turn.

The best thing is “Phalanx Pike” which gives you x900 for every monster that shares the equipped monster’s name.

## How do we compute the coefficient of variation and how do we use it?

The coefficient of variation is the ratio of the standard deviation of a sample to the mean of a sample. It is usually given as the standard deviation as a % of the mean or,
V= (s/mean)x100. It could be used to compare the precision of measuring devices.

Example — The precision of 2 measuring devices are compared when measuring samples of 2 different objects.
Device 1 measures a mean of 0.25 cm and sd = 0.011 cm for a coefficient of variation of V = (0.011/0.25 ) x 100 = 4.4%
Device 2 measures a sample of another object and gets a mean of 1.5 cm and an sd = 0.03 cm for a coefficient of variation of V = (0.03/1.5) x 100 = 2%
And we conclude that device 2 is more precise than device 1.