STAT 3450 Lecture Notes - Lecture 21: Brinell Scale, Factorial Experiment, Analysis Of Variance
6 Mar 2017
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Factorial experiment: vary one or more quantities (factors) to determine the effect on the response. Experimental units: objects on which measurements are made. Completely randomized design: factorial experiment in which experimental units are assigned to treatments randomly. An investigation of the caco3-caf2-k2sio2-fe flux system using the. Submerged arc welding process on hsla-100 and aisi-1081 steels (g. Study the effect of welding fluxes with different chemical compositions on the hardness (measured on the brinell scale) of the resulting weld. Four different fluxes to be studied: a, b, c, d. Investigator made five different welds for each flux on aisi-1018 steel base metal. Compare the means and determine if there is a difference. Extension of the 2 independent sample t-test to more than 2 groups (cid:2868):all i equal vs. h(cid:2869):at least one differs. Recall: when we discussed standard deviation and variance, we were essentially looking at a sum of squares of the deviation of each point to the mean.
