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Minimize variance of random variable

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#standard-deviation #covariance #correlation
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Standardising experimental errorbars. What is appropriate?

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#standard-deviation
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Intuition for Standard Deviation

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#standard-deviation #descriptive-statistics #standard-error
122
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How to map a histogram by using a suitable distribution?

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#probability #statistics #probability-distributions #standard-deviation #density-function
223
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Estimate the $95$% confidence interval of one sample unknown variance and standard deviation

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#statistics #standard-deviation #confidence-interval
415
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Why is $(x_i-\bar{x})^2$ in the formula for variance as opposed to $|x_i-\bar{x}|$?

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#statistics #standard-deviation #variance
456
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The data set $\{x_1,\dots,x_{10}\}$ has a mean $\mu=10$ and a standard deviation $\sigma=3$. Find the value of $\sum_{i=1}^{10}[(x_i-12)^2]$.

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#statistics #summation #standard-deviation #means #variance
33
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How can I eliminate abnormal numbers

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#standard-deviation
944
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Proof of $\operatorname{Var}(\bar{x}) = \frac{\sigma^2}{n}$

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#statistics #standard-deviation #variance
896
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Sample size given mean, standard deviation

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#probability #statistics #standard-deviation #means
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Given a sample size and standard deviation, how to find the probability of the mean

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#probability #statistics #normal-distribution #standard-deviation #means
77
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Confidence interval calculation

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#probability #standard-deviation #variance #confidence-interval
57
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Change of SD after data removal

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#standard-deviation #means #data-analysis
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Estimating the standard deviation by simply looking at a histogram

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#normal-distribution #estimation #standard-deviation
47
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Prove: $\operatorname{std}(\frac{v}{\operatorname{std}(v)}))=1$

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#proof-writing #vectors #standard-deviation #variance

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