Are there any true Random Samples?

Question

Why or Why not?

Answer 1

Yes.  You take your target group and assign each a number 1-10.  Then you take a random number table or have the computer generate one and pull your sample from there.

Answer 2

Certainly one can produce random samples, truly random samples.  Let me give you an example.  If you want to create a list of random numbers, you could take a radioactive source and a detector to make a sound every time a particle is ejected from a decaying nucleus.  The time between the sounds will be truly random.  

If you are doing a survey of people walking past a certain point in a subway station, you could stop a person whenever you hear the sound.  That would be truly random.  However, it would not be a random stratified sample, which is often more representative of a population than just a random sample.

Answer 3

Random is an interesting concept. Flipping a coin can be considered random, in computing terms creating a random sample is more difficult.

  Running a timer in a micro which goes from 0 to 255 every 0.001 second and then using that as a number when someone decides to touch a button will give a good random number between 0 and 255 , because there is little chance of prediction.

   using a Zener diode on the input to a micro also creates a random effect wich in turn can be used for random number generation.

  In short, external , physical effects are more likely to produce a random effect, no matter how simple and when weighed against a complex mathematical algorithm that ultimately may be flawed.

Answer 4

it is interesting question. don't beleive . i think it is different  

Answer 5

I believe not, for everyone is different. Since there are no two people alike (and I'm also talking about identical twins for they don't think alike, only look alike), researchers cannot get a true sample of the public unless they actually take everyone for the experiment, which of course would not consider it a sampling.