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A normal distribution is a (symmetric/asymmetric) (uniform/unimodal/bimodal) graph.
symmetric, unimodal
The parameters for a normal distribution are…
population mean (μ) and population standard deviation (σ).
For a normal distribution, __% of observations fall within 1 standard deviation of the mean (μ).
68
For a normal distribution, __% of observations fall within 2 standard deviations of the mean (μ).
95
For a normal distribution, __% of observations fall within 3 standard deviations of the mean (μ).
99.7