If a large number of fair N-sided dice are rolled, the average of the simulated rolls is likely to be close to the mean of 1,2,...N i.e. the expected value of one die. For example, the expected value of a 6-sided die is 3.5.
Given N, simulate 1e8 N-sided dice rolls by creating a vector of 1e8 uniformly distributed random integers. Return the difference between the mean of this vector and the mean of integers from 1 to N.
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The solution quits because it's taking too long. 1e8 is too many?
The difference should essentially be zero i.e. the two averages equal. I wrote a successful script; run in my desktop environment but the tool won't accept my answer as valid.
It crashes every time, how to complete it?
To get this right apparently you have to generate the random numbers exactly the same way as the answer key. When it tests your script it seeds the random number generator and then confirms whether your program gets EXACTLY the same result. However, if you generate the random numbers in any way different from the key, your answer will be "wrong" but is probably still correct.
There is a MatLab function that does it. Nice and easy.
Nice one
"1e8 N-sided dice" made me confused. I think it should be changed to "1e8-sided dice".
this problem brakes the website. 1e8 is too big and the website blocks out my computer.
After multiple tries of submitting what i thought the correct answer and being met with "While evaluating the solution, the server encountered an error caused by temporary unavailability of MATLAB Service. Wait a few minutes for the MATLAB Service to return, and then rescore." what seemed to do the trick was what Marcel Dornbusch hinted in his comment.
Just make sure you do not output every bit of information in the code, and just output the answer.
description of this problem is confusing.
Good problem
nice problem
description of this problem is confusing.
nice
Challenging to make small!
quite a good question.
i think that makes meaning in statistics.
让我想到伯努利大数定律。
It is important to understand, remember and distinguish between the use of some similar functions.
It is important to understand the question meaning
im trying to solve but i am not getting the answer