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4 questions
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Estimation of mean, variance, proportion for cakes baking in 30 ± 2 minutes, or estimation of parameters of a law for a distribution: is it the same? [closed]
I'm a beginner in statistics and I'm trying to figure things to ensure that I can consider parameters the same manner in two cases :
I believe that if we have enlighten a distribution with the ...
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2
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1
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338
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Knowing both sample mean and sample range improves estimate of the the variance?
It is known that sample variance and sample mean are independent for normally distributed variables, which means knowing sample mean does not say anything about to estimate the variance of the ...
- 699
1
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Distribution of sample variance for non-normal random variable [duplicate]
For a sample of size $n$ of non-normal random variables $x_1,...,x_n$. Is it possible to know which distribution the sample variance estimator follows?
Details: The distribution of $x_i$'s is not ...
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2
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1
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What is the name of the distribution of unbiased sample variance for a sample from Gaussian distribution?
Suppose $X_i$'s are iid Gaussian random variables with mean $\mu$ and variance $\sigma^2$.
The distribution of $\sum_i (X_i - \bar{X}_i)^2 / (n-1)$ isn't Chi square. What is its distribution called? ...
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