Examples of using Sample standard 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
Sample standard deviation.
So that is our sample standard deviation.
Sample standard deviation is 1.04.
So we know our sample standard deviation is 1.04.
But we were able to estimate it with the sample standard deviation.
So my sample standard deviation is 0.50.
What's going to be our sample standard deviation?
The sample standard deviation of group two squared.
We estimate this using our sample standard deviation.
S1, our sample standard deviation for group one is 4.67.
But we could estimate it with our sample standard deviation.
And so then the sample standard deviation is just going to be the square root of that.
And then you can also calculate your sample standard deviation.
This gave us the sample standard deviation, it is our best estimator for this.
Let me do this in a new color-- with using our sample standard deviation.
And if I want to figure out my sample standard deviation I just take the square root of that.
So if this can be estimated it's going to be estimated by the sample standard deviation.
My sample standard deviation is just going to be the square root of my sample variance.
So if we don't know that the best thing we can put in there is our sample standard deviation.
Plus my sample standard deviation for the control squared, which is the sample variance.
And the standard deviation of these 10 data points right here is 2.98, the sample standard deviation.
If you take your sample standard deviation, 4.67 and you square it, you get your sample variance.
So we have been estimating the true standard deviation of the population with our sample standard deviation.
So this is going to be our sample standard deviation one squared, which is the sample variance for that distribution, over 100.
The mean of the 100 injected rats response times is 1.05 seconds with the sample standard deviation of 0.5 seconds.
If you were to take the square root of that our actual sample standard deviation is going to be, let's take the square root of that answer right over there, and we get 0.496 is equal to 0.
And this t-table assumes that you are approximating that standard deviation using your sample standard deviation.
If you will have more than 30 samples, if your sample size is more than 30, your sample standard deviation is going to be a good approximator for your population standard deviation.
They put a little hat on top of the standard deviation to show that it has been approximated using the sample standard deviation.
We have our sample mean and our sample standard deviation, our sample mean here is 17.17-- figured that out in the last video, just add these up, divide by 10-- and our sample standard deviation here is 2.98.