SCAN, an exploratory program for preliminary analysis of bioassay and immunoassay data.

We describe the program SCAN which has been designed for use in conjunction with analysis of variance of immunoassay or bioassay data and which may also be used with more general one-way analysis of variance. Data within treatment groups are examined for outliers and normality of distribution. Overall statistics for normality and homogeneity of variance are also computed. Contributions of individual groups to these statistics are tabulated to permit the detection of aberrant groups. Means and variances are available in a form which facilitates detection of any response error relationship.