When the mean is 0, the coefficient of variation is calculated to be NaN, which is not meaningful, so instead of printing "+-NaN%", just don't print the CV at all. Closes #908 Closes #1444
When the mean is 0, the coefficient of variation is calculated to be NaN, which is not meaningful, so instead of printing "+-NaN%", just don't print the CV at all. Closes #908 Closes #1444