According to empirical rule, the mean and standard deviation interval that cover

Question

According to empirical rule, the mean and standard deviation interval that covers approximately 95.45% of data from a frequency distribution is

Options:

A . μ±σ

B . 2μ±2σ

C . 3μ±2σ

D . μ±2σ

Answer: Option D
Answer: (d).μ±2σ

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