Download The Empirical Rule: Normal distributions

MM2D1d: Compare the
means and standard
deviations of random
samples.
The Empirical Rule:
Normal distributions
Normal Distribution:
Is modeled by a bell shaped curve called a normal
curve that is symmetric about the mean.
Mean
Normal Distributions &
Standard Deviations
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Empirical Rule
A normal curve is symmetric about the ________________.
_____% of the data scores lies between the mean and ONE standard deviation on
either side of the mean.
_____% of the data scores lie between the mean and TWO standard deviations on
either side of the mean.
_____% of the data scores lie between the mean and THREE standard deviations on
either side of the mean.
Empirical Rule
0.15 %
34 %
2.35 %
0.15 %
34 %
13.5 %
2.35 %
13.5 %
68 %
95 %
99.7 %
INTERPRETING NORMALLY
DISTRIBUTED DATA
MM2D1d: Compare the means and standard deviations of random samples .
0.15 %
34 %
2.35 %
13.5 %
0.15 %
34 %
2.35 %
13.5 %
0.15 %
34 %
2.35 %
13.5 %
0.15 %
34 %
2.35 %
13.5 %
0.15 %
34 %
2.35 %
13.5 %
0.15 %
34 %
2.35 %
13.5 %
0.15 %
34 %
2.35 %
13.5 %
0.15 %
34 %
2.35 %
13.5 %
0.15 %
34 %
2.35 %
13.5 %
0.15 %
34 %
2.35 %
13.5 %