Examples of using Random variable in English and their translations into Thai
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Colloquial
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Ecclesiastic
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Ecclesiastic
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Computer
It's defined as the expected value of the product of the distances of each random variable from their mean or from their expected value.
Let's say I have some third random variable that is defined as being the random variable x plus the random variable y.
Lets call this Q1, let's say we have another random variable- lets call it Q- we need a diff color, let me do Q2 in blue.
Lets say I have another random variable Q2 that is defined as, lets say I have 1 independent normally distributed variable I will call that.
The probability that our random variable, the number of cars that passes in an hour, is equal to a particular number.
Because we will start to talk about things like probability distributions and expected values, and it really is useful to quantify things as a random variable.
Notice I didn't write it is just the x with-- what this is, this is actually saying that this is a real population mean, this is a real random variable mean.
But the important thing to realize that there's a finite number of values that this random variable can take on and that's why we have a discreet probability distribution.
And your goal is to figure out the probability distribution of this random variable and then once you know the probability distribution then you can figure out what's the probability that 100 cars pass in an hour or the probability that no cars pass in an hour and you would be unstoppable.
The law of large numbers just says that if we take a sample of n observations of our random variable, and if we were to average all of those observations-- and let me define another variable.
So in this case instead of just taking 4 samples from my original crazy distribution every sample I take 20 instances of my random variable and I average those 20 and then.
They are independent random variables.
Like this with the random variables and that it's a little bit confusing.
And I'm doing that because we just talked about random variables and all of that.
This is equal to the expected value of the random variables, X and Y, X times Y.
In the role of measuring the correlation of random variables performs correlation ratio and the coefficient of correlation.
What I want to do in this video is build up some tools in our tool kit for dealing with sums and differences of random variables.
Now what I need to show you is that the variance of negative y, of the negative of that random variables are going to be the same thing as the variance of y.
So you can perform this experiment a bunch of times, but this tells you the frequency, the frequency of that random variables.
Correlation(Correlatio the Latin means"relationship, the relationship")- a definite statistical relationship between two or more random variables.