Question

# State the empirical rule for variables.

Normal distributions
State the empirical rule for variables.

2021-02-09
Step 1
The normal distributions are bell-shaped. Therefore the empirical rule can be stated as below:
Step 2
For the bell-shaped distributed variable,
The observations that lie within 11 standard deviation from the mean is around $$68.26\%$$.
The observations that lie within 22 standard deviations from the mean is around $$95.44\%$$.
The observations that lie within 33 standard deviations from the mean is around $$99.74\%$$.