EMIS 7307

1
Test Planning

• Big issue How many trials or data points are
  needed?
• Depends on the desired statistical significance
  (i.e. confidence level).
• Sometimes the desired statistical significance
  can not be obtained with the quantity of test
  units, time available for testing or budget
  available.
• Options?
• Substitute some simulation results?
• Change confidence level?

2
Test Planning and Analysis
3
Test Planning and Analysis
4
Test Planning and Analysis
Small scatter but not part of the target
population.
5
Test Planning and Analysis
Might be part of the same population but were
not very confident.
6
Test Planning and Analysis
Very confident that data are part of the same
population.
7
Test Planning and Analysis
8
Test Planning and Analysis
9
Test Planning and Analysis
10
Test Planning and Analysis
11
Test Planning and Analysis
12
Test Planning and Analysis
13
Test Planning and Analysis
14
Test Planning and Analysis
15
Test Planning and Analysis
Published by William Gosset in 1908. His
employer, Guinness Breweries, required him to
publish under a pseudonym, so he chose "Student."
16
Test Planning and Analysis
17
Test Planning and Analysis
18
Test Planning and Analysis
19
Test Planning and Analysis
20
Test Planning and Analysis
21
Test Planning and Analysis
Landing distance of an F-18