Essay --

Part I1.How many independent vari equals ar in a 4X6 portionial mark? How many conditions are in this design?There are 4 and 6 independent variables, and 24 conditions for this design.2.What is the difference amidst a cell mean and the means utilize to interpret a main effect?The main effect is utilize to interpret the differences in means each(prenominal) over levels of one factor collapsed over levels of the other factor (Jackson, 2012). However, the cell mean is apply to interpret is employ with models that include terzetto-way interactions. In addition, a cell means is use with mixed procedures (Jackson, 2012).3.What is the difference between a complete factorial design and an sketchy factorial design?The complete factorial design consists of all combinations of all factor-levels of each factor and it can estimate all factors and their interactions (Collins, Dziak, & Li, 2009 Jackson, 2012). In addition, the fixed-level designs may be calculated (Collins, Dziak, & Li, 2009). For example, a two-level factor, a three-level factor, and a four-level factor has 2 x 3 x 4 = 24 runs.The incomplete factorial design some of the cells are intentionally left empty, where participants entrust not be assigned to those combinations of factors. It is most likely to be used in a controlled group (Trochim, 2000 Jackson, 2012). Therefore, the research can evaluate congenator treatment comparisons within a single study and be able to determine the effect of different treatment combinations (Trochim, 2000 Jackson, 2012).4.Explain the difference between a two-way ANOVA and a three-way ANOVA?A one-way ANOVA is used when the research wants to evaluate the differences between variables (Kirk, 1995 Jackson, 2012). For example, a study may evaluate the dif... ...her factor (Trochim & Donnelly, 2008).How does a covariate reduce hurly burly?An ANCOVA design is a noise-reducing experimental design can adjusts posttest scores for variation on the covariate pretes t. Covariates are the variables you adjust for, where the effect is going to be removed. both continuous variable can be used as the covariate however, the pretest is unremarkably best (Trochim & Donnelly, 2008). Describe and explain three trade-offs present in experiments.Schank and Koehnle (2009) argued that the three trade-offs present in experiments are the inevitable in any decisions including obturate or to standardize conditions in experiments. The interpretation of multiple tests of a supposition is clarified. Experiments with large samples raise the possibility of small, but statistically significant, biases even afterwards randomization of treatments (Wiley, 2009).