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Line 13: − + − {{multiple image − | direction = horizontal − | width = 80 − | footer = Two cards used by football referees − | image1 =S1 Ave Spread.png − | image2 =S2 Ave Spread.png − }}
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Every fiber was cut from one of four spools delivered by the manufacturer. An analysis of the widths of fibers from each spool was performed to determine if a significant difference in quality of fiber exists between them. The spools are named "A1", "A2", "S1", and "S2", where only six fibers were cut from spool A1 so it was omitted from the analysis due to lack of representative data.
Every fiber was cut from one of four spools delivered by the manufacturer. An analysis of the widths of fibers from each spool was performed to determine if a significant difference in quality of fiber exists between them. The spools are named "A1", "A2", "S1", and "S2", where only six fibers were cut from spool A1 so it was omitted from the analysis due to lack of representative data.
[[File:S1 Ave Spread.png|400px|thumb|right|Histogram C: S1 Average Width Spread.]] [[File:S2 Ave Spread.png|400px|thumb|right|Histogram D: S2 Average Width Spread.]] [[File:A2 Ave Spread.png|400px|thumb|right|Histogram E: A2 Average Width Spread.]]