Using Rand to generate binary encoded as +/- 3 volts

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Cameron
Cameron on 14 Apr 2014
Edited: Image Analyst on 14 Apr 2014
I need to generate 100,000 numbers that have a .5 chance of being either a +3 or a -3. I already have my code being T = rand(1,10000) <= 0.5 and I am getting 1s and 0s. How do I turn these 1s and 0s into +/-3.

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Answers (2)

Azzi Abdelmalek
Azzi Abdelmalek on 14 Apr 2014
T = 6*(rand(1,10000) <= 0.5)-3
Image Analyst
Image Analyst on 14 Apr 2014
Edited: Image Analyst on 14 Apr 2014
Why not just use randi instead:
T = 6*(randi(2, 10000, 1) - 1) - 3

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