\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
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\(\pi\)
e
\(\frac{a}{b}\)
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\(\sqrt{\,}\)
\(a^{b}\)
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A student's marks on their last 5 exams were: \(78, 85, 62, 90, 75\).
Find the standard deviation of the marks, rounded to two decimal places.
\(\sigma \approx\)
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