A 22 factorial experiment is analyzed by the Statistics Consulting Center at Virginia Polytechnic Institute and State University. The client is a member of the Department of Housing, Interior Design, and Resource Management. The client is interested in comparing cold start versus preheating ovens in terms of total energy being delivered to the product. In addition, the conditions of convection are being compared to regular mode. Four experimental runs were made at each of the four factor combinations. Following are the data from the experiment. Do an analysis of variance to study main effects and interaction. Drawconclusions.

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Preheat Cold Convection 618 619.3 | 575 573.7 629 611 581 585.7 | 558 581 595 574 572 562 Mode Regular Mode 566 562