Homework 1 solutions

Homework 1 solutions - ENME 392 Fall 2009 Statistical...

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ENME 392 Fall 2009 - Statistical Methods for Product and Process Development Tues – Thurs: Section 0101 11:00-12:15 room EGR 2107; Section 0201 9:30-10:45 room ANS 0408 Prof. D. B. Barker, room 2112 ENG, (301) 405-5264, [email protected] 8/31/09 page 1 Homework #1 – due Tuesday September 8, at beginning of class Note: answers to odd numbered problems are shown in textbook. Problem numbering, please follow for ease of grading: 1(1.3 c-d) - this is means homework problem 1 which is Walpole problem 1.3 parts c thru d inclusive. (1.3 c-d & 1.9) – Homework Prob. 1 – Walpole problem 1.3 c-d sorted data sample # No aging aging 1 216 201 2 217 203 3 218 204 4 218 205 5 221 209 6 222 211 7 225 214 8 227 215 9 228 218 10 229 219 mean 222.1 209.9 =average() variance 23.66 42.10 =var() std 4.86 6.49 =stdev() 221 209 222 211 median 221.5 210.5
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ENME 392 Fall 2009 - Statistical Methods for Product and Process Development Tues – Thurs: Section 0101 11:00-12:15 room EGR 2107; Section 0201 9:30-10:45 room ANS 0408 Prof. D. B. Barker, room 2112 ENG, (301) 405-5264, [email protected] 8/31/09 page 2 3 (1.13) (a) Mean = x = 124.3 and median = x = 120; (b) 175 is an extreme observation that pushes up the average, but does not affect the median. 0 20
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Homework 1 solutions - ENME 392 Fall 2009 Statistical...

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