Mixed Model Expression Index Output Data Set Name Use this text box to specify a name for the output data set containing a Mixed Model Expression Index (MMEI). The MMEI is computed by averaging predicted values from the linear model fits. For example, MMEI can be used as a gene-level summarization index for Affymetrix GeneChip probe level data. This data will be created only if this field is not empty. For detailed information about the files and data sets used or created by JMP Life Sciences software, see Files and Data Sets. To Specify the Generation and Name of the Mixed Model Expression Index Output Data Set Name: Left-click in the field and type a name for the output data set.