Question: I really need help on getting this example Find the standard deviation (rounded to the nearest unit) for the data indicated. X Test Score Frequency

I really need help on getting this example

Find the standard deviation (rounded to the nearest unit) for the data indicated. X Test Score Frequency 90 80 70 60 50 Need Help? Read It Additional Materials Tech Guide: Excel Tech Guide: TI-83/84 LA Tech Guide: TI-Nspire

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