"The Normal Curve Song"
Quick
FACTS about the density curve:
*Is
always
on or above the horizontal axis
*Has
exactly
1 underneath it when all the numbers are added together
*A
density
curve describes the overall pattern of a distribution. The area under
the
curve and about any range of values is the proportion of all
observations
that fall in that range.
Median:
*Is
the
equal areas point of the density curve. It is the point that divides
the
area under the curve in half.
Mean:
*The
balance
point of a density curve. The point at which the curve would balance if
made of a solid material.
68-95-99.7 Rule
z-score
Steps to finding the normal proportions
Example 1
Example 2
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