This is the Dataplot data file CATAPULT.DAT Data from a catapult experiment (SEMATECH uses this as a "hands on" student experiment much as NIST uses funnel experiment). Contact--Ledi Trutna, private consultant, formerly of AMD Number of observations = 20 Number of observations per line image = 13 Order of variables on a line image-- 1. Dependent variable Y = Distance (inches) ball travels 2. Factor Variable Z1 = Band Height (height in inches of pivot point for rubber bands), 2.25, 3.5, 4.75 3. Factor Variable Z2 = Start Angle (location of arm when operator releases), 0, 10, 20 degrees 4. Factor Variable Z3 = Number of Rubber Bands, 1 or 2 5. Factor Variable Z4 = Arm Length (distance the arm is extended in inches), 0, 2, 4 6. Factor Variable Z5 = Stop Angle (location of the arm when arm is stopped) 45, 62, 80 degrees 7. Factor Variable X1 = Z1 coded as -1, 0, 1 8. Factor Variable X2 = Z2 coded as -1, 0, 1 9. Factor Variable X3 = Z3 coded as -1, 1 10. Factor Variable X4 = Z4 coded as -1, 0, 1 11. Factor Variable X5 = Z5 coded as -1, 0, 1 12. Variable SEQ = Run sequence order for observation 13. Variable CENT = 0 - not center point 1 - center point (rubber band = 1) 2 - center point (rubber band = 2) Last column is an alphanumeric description of pattern. Analysis: This is a 2**(5-1) design. See http://www.itl.nist.gov/div898/handbook/pri/section6/pri63.htm for a detailed analysis. Note: The data has been organized into Yates order rather than run sequence order so that a YATES analysis can be performed. To read this file into Dataplot-- DIMENSION 50 VARIABLES SKIP 50 READ CATAPULT.DAT Y Z1 Z2 Z3 Z4 Z5 X1 X2 X3 X4 X5 SEQ CENT RUN CENT Y Z1 Z2 Z3 Z4 Z5 X1 X2 X3 X4 X5 SEQ POINT PATTERN ------------------------------------------------------------------- 28.00 3.25 0 1 0 80 -1 -1 -1 -1 1 1 0 ----+ 35.00 4.75 0 1 0 45 1 -1 -1 -1 -1 6 0 +---- 8.00 3.25 20 1 0 45 -1 1 -1 -1 -1 10 0 -+--- 28.25 4.75 20 1 0 80 1 1 -1 -1 1 8 0 ++--+ 33.50 3.25 0 2 0 45 -1 -1 1 -1 -1 15 0 --+-- 84.00 4.75 0 2 0 80 1 -1 1 -1 1 17 0 +-+-+ 36.00 3.25 20 2 0 80 -1 1 1 -1 1 16 0 -++-+ 28.50 4.75 20 2 0 45 1 1 1 -1 -1 14 0 +++-- 33.00 3.25 0 1 4 45 -1 -1 -1 1 -1 12 0 ---+- 85.00 4.75 0 1 4 80 1 -1 -1 1 1 9 0 +--++ 45.00 3.25 20 1 4 80 -1 1 -1 1 1 18 0 -+-++ 36.50 4.75 20 1 4 45 1 1 -1 1 -1 11 0 ++-+- 106.00 3.25 0 2 4 80 -1 -1 1 1 1 20 0 --+++ 126.50 4.75 0 2 4 45 1 -1 1 1 -1 4 0 +-++- 45.00 3.25 20 2 4 45 -1 1 1 1 -1 5 0 -+++- 126.50 4.75 20 2 4 80 1 1 1 1 1 3 0 +++++ 99.00 4.00 10 2 2 62 0 0 1 0 0 2 2 00+00 45.00 4.00 10 1 2 62 0 0 -1 0 0 7 1 00-00 84.50 4.00 10 2 2 62 0 0 1 0 0 13 2 00+00 37.50 4.00 10 1 2 62 0 0 -1 0 0 19 1 00-00