Stat 101: Quality control

• Admistrivia
  • No class Wednesday
  • Homework on web (one group assignment and one regular homework)

• Shaft data set

  (crib from Basic business Statistics by Foster, Stine and Waterman. page 70)

  • Goal: shafts between 810 and 820 thousandths of an inch
  • Questions: Does the current process meet this standard?
  • any trends?
  • Any day of the week effects?

• Car seam data set

  (crib from Basic business Statistics by Foster, Stine and Waterman. page 82)

  • Width .300cm with allowable SD of .060cm
  • Do the trunks meet this standard?

Last modified: Mon Nov 29 10:01:18 EST 1999