using shortcut method find the mean variance and standard deviation fo

1.	using shortcut method find the mean variance and standard deviation for the data the class is 30-40 40-50 50-60 60-70 70-80 80-90 90-100 and the frequency is 3 7 12 15 8 3 2
Answer» Answer: DIVISIBLE izpr ROCK s iCloud then s OBLIGATORY W OFFICIALS w Rockland

using shortcut method find the mean variance and standard deviation for the data the class is 30-40 40-50 50-60 60-70 70-80 80-90 90-100 and the frequency is 3 7 12 15 8 3 2

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Answer:

DIVISIBLE izpr ROCK s iCloud then s OBLIGATORY W OFFICIALS w Rockland

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using shortcut method find the mean variance and standard deviation for the data the class is 30-40 40-50 50-60 60-70 70-80 80-90 90-100 and the frequency is 3 7 12 15 8 3 2​

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using shortcut method find the mean variance and standard deviation for the data the class is 30-40 40-50 50-60 60-70 70-80 80-90 90-100 and the frequency is 3 7 12 15 8 3 2