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Quality Digest Columns by Donald J. Wheeler
2009
193. Feb.09 First, Look at the Data
194. Mar.
09
Probability Models Do Not Generate Your Data
195. Apr.
09
No Data Have Meaning without Context
197. May.09 All Outliers Are Evidence!
198. Jun.
09
Don’t the Outliers Distort the Limits?
199 Jul.
09
Good Limits from Bad Data
200. Aug.
09
Do You Have Leptokurtophobia?
201. Sep.
09
Transforming the Data Can Be Fatal to Your Analysis
202. Oct.
09
Avoiding Statistical Jabberwocky
203. Nov.
09
Two Definitions of Trouble
204. Dec.
09
The Four Questions of Data Analysis
2010
205. Jan.
10
The Right and Wrong Ways of Computing Limits
206. Feb.
10
Individual Charts Done Right and Wrong
207. Mar.
10
Scaling Factors for Process Behavior Charts
208. Apr.10 The Imaginary Theorem of Large Samples
209. May.10 Two Routes to Process Improvement
210. Jun.10 Is the Part in Spec?
213. Jul.10 Where Do Manufacturing Specifications Come From?
215. Aug.10 The Effective Cost of Production and Use
216. Sep.10 The Gaps between Performance and Potential
217. Oct.10 What Is the Zone of Economic Production?
220. Nov.10 Are You Sure We Don’t Need Normally Distributed Data?
222. Dec.10 The Intraclass Correlation Coefficient
2011
223. Jan.11 Problems with Gauge R&R Studies
224. Feb.11 A Better Way to Do R&R Studies
225. Mar.11 Three Questions for Success
226. Apr.11 How Measurement Error Affects the Four Ways We Use Data
227. May.11 100% Inspection and Measurement Error
228. Jun.11 Estimating the Fraction Nonconforming
230. Jul.11 Problems with Risk Priority Numbers
231. Aug.11 Problems with Skewness and Kurtosis
232. Sep.11 Myths About Process Behavior Charts
233. Oct.11 What About p-Charts?
234. Nov.11 Working with Rare Events
235. Dec.11 What is Chunky Data?