Mathematics, 07.02.2021 02:50, allenlog000

PLEASE HELP! Test scored of 12 students are 31, 41, 45, 48, 52, 55, 56, 56, 65, 67, 67, 69

What is the mean and standard deviation?

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PLEASE HELP! Test scored of 12 students are 31, 41, 45, 48, 52, 55, 56, 56, 65, 67, 67, 69