III. Types of Error
•
E
a
= E
s
+ E
r
•
Absolute error in a measurement arises from the sum of systematic
(determinate) error and random (indeterminate) error.
•
A.
Systematic Error
-
has a definite value and an assignable cause.
•
There are three common sources of systematic error:
1.
Instrument error
2.
Personal error
3.
Method error