Submitted by Independent-Office80 t3_zy3pdm in explainlikeimfive
lector57 t1_j23nv4r wrote
Reply to comment by Independent-Office80 in ELI5_Random Variables? What really is the difference btw finding the probability of say..."getting 2 heads in a coin tossed three times" and "Finding the Probability mass function of a Random Variable 2"?? Their concepts are so similar but I feel I'm thinking wrong and there's actually a difference! by Independent-Office80
Like in algebra
x² is a function. A formula. X is the variable
Substitute x=2 and you get a value
In prob the random variable X can take different values.
The mass function is a formula. Substitute a specific value of X and you get the probability of obtaining the result X in the experiment
Independent-Office80 OP t1_j23o0gg wrote
Oh. I get that now. Thanks. Could you elaborate on the inner workings of the PMF? Like, how it’s calculated on the inside? Thanks!
lector57 t1_j23o467 wrote
It depends on the experiment/situation
Independent-Office80 OP t1_j23o84h wrote
Oh. Doesn’t really explain much. But thanks a lot for taking your time to explain the previous. Means alot!
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