About the Summary view
The Summary view provides an overview of all columns in a table with charts and descriptive statistics. It is also where you can create computed columns and perform simple statistical tests.
The Summary view is accessible by clicking "Summary" in the toolbar with a table of interest selected in the navigator. The left part of the Summary view displays a list of columns in the table along with summary statistics.
The right part of the Summary view is divided into a column summary view (top) and covariate view (bottom). The column summary view displays clickable charts of the column selected on the left. In the covariate view, you can select a second column of interest and see a summary of the interaction between the column selected on the left and the column selected on the right.
The types of charts and tabulations displayed depends on the data types of the selected columns, and whether they are being treated as categories or survival times:
- If a category column is selected on the left, the column summary will display pie charts
- If a column is selected on the right, the covariate summary will display the sample or estimated proportions of the left-hand categories broken down by values of the right-hand column
- If no column is selected on the right, the covariate summary will display a bar chart of the number of times each category appears in the left-hand column
- If a numeric column is selected on the left, the column summary will display a histogram and a visual t-test
- If a column is selected on the right, the covariate summary will display a histogram, scatterplot, t-test, or box-plot for each group of values of the right-hand column, or a scatterplot of the left-hand column against the right-hand column
- If no column is selected on the right, the covariate summary will display a Q-Q plot of the quantiles of the left-hand column against the quantiles of a uniform or normal distribution
- If a survival-times column is selected on the left, the column summary will display survival curves
- If a column is selected on the right, the covariate summary will display survival curves of the left-hand column broken down by values of the right-hand column
- If no column is selected on the right, the covariate summary will display a survival curve of the left-hand column
Finally, the bottom of the Summary view contains a feature called "The Bottom Line", which provides an intuitive interpretation of the statistical test currently being performed.
General tasks:
Single-column summaries:
Two-column summaries:
Statistical tests:
- t-tests
- Analysis of variance (ANOVA)
- Median tests
- Non-parametric tests
- Distribution tests
- Contingency table analysis
- Survival analysis