how to generate random data (dichotomous 0-1) with normal distrubition
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Hello, I am a measurement and evaluation student and I want to generate [10000,10] random data with matlab. But these data includes only 0 and 1 and has a normal distrubition. First I used binornd function, but the data I generated did not have normal distrubition. Then I used normrnd function, but the datas I created has decimal points and some of them are negative. Please help me... Beril
1 commentaire
RNTL
le 27 Mar 2012
If your set contain only two values, namely [0,1] how can it has normal distribution?
Your set should be defined by a probability function that is nonzero only for those two values, hence it cannot be derived from normal distribution.
Réponses (3)
RNTL
le 27 Mar 2012
If your set contain only two values, namely [0,1] how can it has normal distribution? Your set should be defined by a probability function that is nonzero only for those two values, hence it cannot be derived from normal distribution
0 commentaires
Image Analyst
le 27 Mar 2012
Maybe you want randi
zerosAndOnes = randi(2, [1 1000]) - 1
but it's not going to be a normal distribution. That's impossible with only two values.
3 commentaires
Jonathan Sullivan
le 27 Mar 2012
I think when he says "normally" distributed, I think he means *uniformly* distributed. That's my guess.
Image Analyst
le 27 Mar 2012
andrei: yep. Jonathan: maybe he wants a random distribution where there are equal numbers of 1's and 0's??? Maybe if those numbers are equal he's calling *that* normal or uniform. Or maybe he just doesn't care anymore and went away. I don't know why Beril is not clearing this up.
Selin Soguksu
le 28 Mar 2012
1 commentaire
Daniel Shub
le 28 Mar 2012
This cannot be a normal distribution. If I create a 1e4x30 matrix of 0 or 1, the total will always be an integer between 0 and 30. Are you sure you do not want a binomial distribution? Is the score on item i independent from the score on item j?
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