statistical tests

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What does a chi-squared test test?
if there is a significant difference between observed and expected results
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how do you calculate degrees of freedom for a chi-squared test?
number of classes minus 1
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What does a spearman's rank calculation measure?
how correlated two sets of data are
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What does a t-test measure?
to find if there is a significant difference between means of two sets of data
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how do you calculate degrees of freedom for a t test?
(number of individuals in group 1+number of individuals in group 2) -2
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how do you calculate degrees of freedom for a chi-squared test?

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number of classes minus 1

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What does a spearman's rank calculation measure?

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What does a t-test measure?

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how do you calculate degrees of freedom for a t test?

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