Insulation strength data

A quality engineer for a building products manufacturer is developing a new insulation product. The engineer designs a 2-level full factorial experiment to study the effects of several factors on the variability in insulation strength. While conducting the strength experiment, the engineer decides to collect extra samples to examine the effects of the factors on the variability in insulation strength. The engineer collects six repeat measurements of strength at each combination of factor settings and calculates the standard deviation of the repeats.

You can use this data to demonstrate Analyze Variability.

Worksheet column	Description
StdOrder	The order of the runs in standard order (also called Yates order).
RunOrder	The order of the runs in random order.
CenterPt	The center points. This design has no center points.
Blocks	The blocks. In this design, all of the design points are contained in a single block.
Material	The material type: Formula1 or Formula2 (factor).
InjPress	The injection pressure: 75 or 150 (factor).
InjTemp	The injection temperature: 85 or 100 (factor).
CoolTemp	The cooling temperature: 25 or 45 (factor).
Strength_1	The strength measurements of the insulation samples from the first run of the experiment (response).
Strength_2	The strength measurements of the insulation samples from the second run of the experiment (response).
Strength_3	The strength measurements of the insulation samples from the third run of the experiment (response).
Strength_4	The strength measurements of the insulation samples from the fourth run of the experiment (response).
Strength_5	The strength measurements of the insulation samples from the fifth run of the experiment (response).
Strength_6	The strength measurements of the insulation samples from the sixth run of the experiment (response).
Std	The standard deviation for each run.
N	The number of repeat samples that use the same factor settings for each run.

Download InsulationStrength.MTW