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.