User contributions for Statadmin

4 November 2011

• 07:4007:40, 4 November 2011 diff hist −1‎ m Problem 2-1, Comparing a single mean to a specified value ‎No edit summary current

30 August 2010

• 15:2515:25, 30 August 2010 diff hist −2‎ Problem 5-1, Factorial designs ‎ →‎Solution current

5 August 2010

• 17:4117:41, 5 August 2010 diff hist 0‎ MediaWiki:Mainpage ‎No edit summary current
• 17:3917:39, 5 August 2010 diff hist +55‎ N MediaWiki:Mainpage ‎ Created page with "Statistics Tutorial: Design and Analysis of Experiments"
• 17:2817:28, 5 August 2010 diff hist +69‎ N Main Page ‎ moved Main Page to Statistics Tutorial: Design and Analysis of Experiments: Replace "Main Page" with meaningful title. current
• 17:2817:28, 5 August 2010 diff hist 0‎ m Statistics Tutorial: Design and Analysis of Experiments ‎ moved Main Page to Statistics Tutorial: Design and Analysis of Experiments: Replace "Main Page" with meaningful title. current

31 July 2010

• 11:1511:15, 31 July 2010 diff hist −209‎ Statistics Tutorial: Design and Analysis of Experiments ‎No edit summary
• 11:0311:03, 31 July 2010 diff hist +117‎ N File:5-1norm prob.png ‎ These plots indicate that our data is sufficiently gaussian and we can believe the results of our hypothesis testing. current
• 11:0211:02, 31 July 2010 diff hist +159‎ N File:5-1dataplot.png ‎ This plot illustrates the various effects on the data in problem 5-1. The hats (^) indicate that these are approximate effects calculated from our sample data. current
• 11:0111:01, 31 July 2010 diff hist +129‎ N File:5-1yield.png ‎ This plot of yield vs. pressure, at the different levels of temperature, helps to visualize the different effects in our problem. current
• 11:0111:01, 31 July 2010 diff hist +11,179‎ N Problem 5-1, Factorial designs ‎ Created page with '==Problem Statement== ''The yield of a chemical process is being studied. The two most important variables are thought to be the pressure and the temperature. Three levels of eac…'
• 10:5910:59, 31 July 2010 diff hist 0‎ N File:4-1dataplot.png ‎No edit summary current
• 10:5810:58, 31 July 2010 diff hist +7,214‎ N Problem 4-1, Randomized blocks ‎ Created page with '==Problem Statement== ''A chemist wishes to test the effect of four chemical agents on the strength of a particular type of cloth. Because there might be variability from one bo…' current
• 10:5710:57, 31 July 2010 diff hist +66‎ Statistics Tutorial: Design and Analysis of Experiments ‎No edit summary
• 10:3910:39, 31 July 2010 diff hist +48‎ N File:3-1fake4.png ‎ Confidence interval on the differences in means. current
• 10:3910:39, 31 July 2010 diff hist +75‎ N File:3-1fake3.png ‎ Confidence interval on the mean tensile strength for each mixing technique. current
• 10:2310:23, 31 July 2010 diff hist +41‎ N File:3-1e.png ‎ Residuals vs. predicted tensile strength. current
• 10:2010:20, 31 July 2010 diff hist +24‎ N File:Npp.png ‎ Normal probability plot. current
• 10:1910:19, 31 July 2010 diff hist +39‎ N File:3-1b.png ‎ Comparison of data to a T distribution. current
• 10:1810:18, 31 July 2010 diff hist +142‎ N File:3-1error comparison.png ‎ Comparison of hypothetical data sets for which most of the error is between the treatment means (left) and within the treatment means (right). current
• 10:1710:17, 31 July 2010 diff hist +21‎ N File:3-1dataplot.png ‎ Illustration of data. current
• 10:1110:11, 31 July 2010 diff hist +17,208‎ N Problems 3-1 through 3-3, Analysis of variance ‎ Created page with 'We will provide solutions for problems 3-1, 3-2 and 3-3 in this tutorial. ==Problem statement== ===Problem 3-1=== ''The tensile strength of portland cement is being studied. Fou…' current
• 10:1010:10, 31 July 2010 diff hist +49‎ Statistics Tutorial: Design and Analysis of Experiments ‎No edit summary
• 08:5208:52, 31 July 2010 diff hist +39‎ N File:2-4fig1.png ‎ Confidence interval of the sample mean. current
• 08:5208:52, 31 July 2010 diff hist +1,432‎ N Problem 2-4, Determining required sample size ‎ Created page with '===Problem Statement=== ''A normally distributed random variable has an unknown mean <math>\mu</math> and a known variance <math>\sigma^2=9</math>. Find the sample size required…' current
• 08:5108:51, 31 July 2010 diff hist +63‎ Statistics Tutorial: Design and Analysis of Experiments ‎No edit summary
• 08:4608:46, 31 July 2010 diff hist +51‎ N File:2-2fig5.png ‎ The confidence interval about the theoretical mean. current
• 08:4508:45, 31 July 2010 diff hist +46‎ N File:2-2fig4.png ‎ The confidence interval about the sample mean. current
• 08:4408:44, 31 July 2010 diff hist +27‎ N File:2-2fig2.png ‎ Our plot after normalizing. current
• 08:4308:43, 31 July 2010 diff hist +57‎ N File:2-2fig1.png ‎ Our data compared to a theoretical Gaussian distribution. current
• 08:4308:43, 31 July 2010 diff hist +5,237‎ N Problem 2-2, Comparing a single mean to a specified value (second example) ‎ Created page with '==Problem Statement== ''The viscosity of a liquid detergent is supposed to average 800 centistokes at 25 °C. A random sample of 16 batches of detergent is collected, and the ave…' current
• 08:4208:42, 31 July 2010 diff hist +108‎ Statistics Tutorial: Design and Analysis of Experiments ‎No edit summary
• 08:4008:40, 31 July 2010 diff hist +59‎ Statistics Tutorial: Design and Analysis of Experiments ‎No edit summary
• 08:0908:09, 31 July 2010 diff hist +51‎ N File:Gaussian5.png ‎ The confidence interval about the theoretical mean. current
• 08:0808:08, 31 July 2010 diff hist +46‎ N File:Gaussian4.png ‎ The confidence interval about the sample mean. current
• 08:0708:07, 31 July 2010 diff hist +25‎ N File:Gaussian3.png ‎ Illustrating the P-value. current
• 08:0608:06, 31 July 2010 diff hist +27‎ N File:Gaussian2.png ‎ Our plot after normalizing. current
• 08:0408:04, 31 July 2010 diff hist +57‎ N File:Gaussian1.png ‎ Our data compared to a theoretical Gaussian distribution. current
• 07:5707:57, 31 July 2010 diff hist +8,903‎ N Problem 2-1, Comparing a single mean to a specified value ‎ Created page with '==Problem statement== ''The breaking strength of a fiber is required to be at least 150 psi. Past experience has indicated that the standard deviation of breaking strength is σ …'
• 07:5607:56, 31 July 2010 diff hist +41‎ Statistics Tutorial: Design and Analysis of Experiments ‎No edit summary
• 07:3707:37, 31 July 2010 diff hist +434‎ Statistics Tutorial: Design and Analysis of Experiments ‎No edit summary