A.
Normal Error Curve
m
x
i
Relative frequency, dN / N
+1
s
-1
s
m
= 50
s
= 5
+1
s
-1
s
m
= 50
s
= 10
m
=
Population Mean
(True Mean)
s
=
Population
Standard Deviation
•
Population refers to an
infinite number of
measurements
