Analysis of Means
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Stat > ANOVA > Analysis of Means

Draws an Analysis of Means chart (ANOM) for normal, binomial, and Poisson data and optionally prints a summary table for normal and binomial data.

Dialog box items

Response: Enter the column containing the response variable. The meaning of and limitations for the response variable vary depending on whether you choose a normal, binomial, or Poisson distribution. See Data for Analysis of Means for more information.

Distribution of Data:

Normal: Choose if the response data follow a normal distribution (measurement data). See Normal Data for Analysis of Means.

Factor 1: Enter the column containing the levels for the first factor. If you enter a single factor, Analysis of Means produces a single plot showing the means for each level of the factor.

Factor 2 (optional): Enter the column containing the levels for the second factor. If you enter two factors, Analysis of Means produces three plots -- one showing the interaction effects, one showing the main effects for the first factor, and one showing the main effects for the second factor.

Binomial: Choose if the response data follow a binomial distribution. See Binomial Data for Analysis of Means.

Sample size: Enter a number or a stored constant to specify the sample size.

Poisson: Choose if the response data follow a Poisson distribution. See Poisson Data for Analysis of Means.

Alpha level: Enter a value for the error rate, or alpha-level. The number you enter must be between 0 and 1. The decision lines on the ANOM chart are based on an experiment-wide error rate, similar to a family error rate you might use when making pairwise comparisons or contrasts in an ANOVA.

Title: Type a new title to replace the plot's default title.