I think I understand the concept of random variable (for example, the number of heads when three coins are tossed together or the temperature of a place at 6.00am every morning).(adsbygoogle = window.adsbygoogle || []).push({});

I am, however, confused as I have seen some material which refers even the values taken by a random variable (or instances) as random variables. For example, consider the text from a PowerPoint presentation. The second part, for example, calls the members of a sample as independent variables.

How should I think about this?

Thanks.

Text from a presentation.

“Suppose we are given a random variable X with some unknown probability distribution. We want to estimate the basic parameters of this distribution, like the expectation of X and the variance of X. The usual way to do this is to observe n independent variables all with the same distribution as X”

“Let X1,X2,…,Xn be independent and identically distributed random variables having c. d. f. F and expected value μ. Such a sequence of random variables is said to constitute a sample from the distribution F.”

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# Question about random variables

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