Function: mean(divide(minus(numbers('xyy'), numbers("yyy")), numbers('xyy')) if divide(numbers("yyy") if divide(minus(numbers('xyy'), numbers("yyy")), numbers('xyy')) > numbers('xyy') else minus(numbers('xyy'), numbers("yyy")), divide(minus(numbers('xyy'), numbers("yyy")), numbers('xyy'))) > minus(numbers('xyy'), numbers("yyy")) else numbers("yyy") if minus(numbers('xyy'), numbers("yyy")) > numbers('xyy') else divide(minus(numbers('xyy'), numbers("yyy")), numbers('xyy')), divide(numbers("yyy") if numbers('xyy') > divide(minus(numbers('xyy'), numbers("yyy")), numbers('xyy')) else minus(numbers('xyy'), numbers("yyy")), divide(minus(numbers('xyy'), numbers("yyy")), numbers('xyy'))))