To calculate a sign confidence interval and test for the median
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1    Choose Stat > Nonparametrics > 1-Sample Sign.

2    In Variables, enter the column(s) containing the data.

3    Choose one of the following:

·    to calculate a sign confidence interval for the median, choose Confidence interval

·    to perform a sign test, choose Test median

4    If you like, use one or more of the available dialog box options, then click OK.