Time series and probability

78 Views Asked by At

I have many mis-conception about time series, random process and random variable.

Sorry for asking similar questions.

There is a time series having infinitely many samples,

such as, $x_1$, $x_2$, ... $x_n$, ...

When I make a histogram of it,

I find the ratio is $0.4$, (the number of sample, larger than $4$)/(the total sample number)

In this case, can I say "the probability that sample is larger than 4 is $0.4$ in this time series, or discrete time random process?"

Is it right? If it is right, how can I express this probability by using the term of random process, or time series?

I really thank you for reading.