| SCATTER
GRAM |
 |
WHAT
IS IT?
A
graph showing the pairs of plotted values of
two factors, one that is believed to be independent
and the other dependent.
|
 |
WHAT
DOES IT LOOK LIKE?
 Example
Chart
|
 |
WHEN
IS IT USED
- Do
you want to test whether the performance of
one factor is related to the performance of
another?
- Are
the two factors:
- a
quality characteristic (system performance
measure) and a factor you suspect affects
it, OR
- two
related quality characteristics (system
performance measure), OR
- two
factors suspected of relating to the same
quality characteristic (system performance
measure)?
|
 |
HOW
IS IT MADE?
- Draw
and label the horizontal and vertical axes.
- Scale
each axis.
- Plot
the points.
- Interpret
the scatter diagram.
|
| EXAMPLES: |
| PRIMARY
INTERMEDIATE
Classroom
Learning and Spirit Chart
JUNIOR
HIGH
ADULT
Like
Teaching?
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