\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
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\(\pi\)
e
\(\frac{a}{b}\)
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\(\sqrt{\,}\)
\(a^{b}\)
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\(\div\)
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ln
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sin
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tan
tan⁻¹
A student earned these marks on their last 5 exams: $$78,\, 85,\, 62,\, 90,\, 75$$Find the standard deviation, rounded to 2 decimal places.
\(\sigma \approx\)
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