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What is the difference between simple random sampling and random sampling?
Simple!
What is the difference between a bias and a random error?
Bias is systematic error. Random error is not.
What is the difference between a random variable and random process?
A random process is a sequence of random variables defined over a period of time.
The usual sampling distributionof the difference between means is a what?
There is no such thing as "the usual sampling distribution". Different distributions of the original random variables will give different distributions for the difference between their means.There is no such thing as "the usual sampling distribution". Different distributions of the original random variables will give different distributions for the difference between their means.There is no such thing as "the usual sampling distribution". Different distributions of the original random variables will give different distributions for the difference between their means.There is no such thing as "the usual sampling distribution". Different distributions of the original random variables will give different distributions for the difference between their means.
What is the difference between random and structured packing and what do they do?
the difference between random and structured packing depend on many thing: 1. gas - liquid contact 2. pressure drop 3. type of solvent 4. etc..
