Bar chart/Box plot
Bar plot, box plot, mean-and-whisker plot, jitter plot or violon plot for one or several columns (samples) of univariate data. Alternatively, you can use a group column. If you include two group columns, you get a grouped bar/box plot with the first group column specifying the group of bars, and the second the bar within the group. There is also an option for using the first value in each column for setting the x position of the column in the plot. Missing values are disregarded.
Bar chart
For each sample, the mean value is shown by a bar. In addition, “whiskers” can optionally be shown. The whisker interval can represent a one-sigma or a 95% confidence interval (1.96 sigma) for the estimate of the mean (based on the standard error), or a one-sigma or 95% concentration interval (based on the standard deviation).
Box plot
For each sample, the 25-75 percent quartiles are drawn using a box. The median is shown with a horizontal line inside the box. The minimal and maximal values are shown with short horizontal lines ("whiskers").
If the "Outliers" box is ticked, another box plot convention is used. The whiskers are drawn from the top of the box up to the largest data point less than 1.5 times the box height from the box (the "upper inner fence"), and similarly below the box. Values outside the inner fences are shown as circles, values further than 3 times the box height from the box (the "outer fences") are shown as stars.
The “Notches” option visualizes an approximate 95% confidence interval for the median.
The quartile methods (rounding or interpolation) are described under “Percentiles”.
Mean and whisker plot
Similar to bar chart, but without the bar, showing the mean as a point with whiskers for the standard error, standard deviation or 95% intervals.
Jitter plot
Each value is plotted as a dot. To show overlapping points more clearly, they can be displaced using a random “jitter” value controlled by a slider.
Violin plot
The violin plot shows a kernel density plot (“continuous histogram”) for each sample. The plot ranges from the minimum to the maximum value. A box plot (described above) can optionally be shown on top of the violin.