Summary statistics

By default, Protobi shows the distribution and sample size (aka "basis") for all elements and the mean for all numeric elements. For example the following shows a distribution and mean for S2., "How long you have you been in practice?"

<img src="/uploads/upload/image/5200/direct/1561567083503-s2-default.png" alt="Protobi data view showing question S2 with default statistics. The question "How long have you practiced as a Neurologist?" displays a horizontal bar chart with five response categories showing percentage distributions. Below the distribution, two default summary statistics are shown: Mean (14.7) and N (156)." style="width: 331px;" class="fr-fic fr-dib">

View stats

But you can choose which summary statistics you want to see for any question. Select the circle or square icon for any element and choose the menu item "Statistics..."

<img src="/uploads/upload/image/5200/direct/1561567105352-s2-menu.png" alt="Context menu for question S2 showing six options. The menu includes "Copy as text", "Copy as image", "Round by...", "Statistics..." (highlighted in gray), "Edit...", and "Recode...". The Statistics option is emphasized as the menu item to select for configuring summary statistics." style="width: 183px;" class="fr-fic fr-dib">

Adjust stats

This will bring up a dialog that allows you to choose which statistics you want to see. In addition to selecting the summary stats also check the "Apply recursively to this element and all sub elements?" checkbox at the bottom of the dialog so the child elements in a group get the same statistics. 

<img src="/uploads/upload/image/5200/direct/1664220691976-1664220691976.png" alt="Statistics configuration dialog showing various checkbox options for summary statistics. Four options are checked: Distribution, Basis, Mean, and Median. Below these are unchecked options for Sum, Min, Max, Count distinct, Standard deviation, and Standard error. Three "Box" rows allow custom statistics with input fields for values and labels. At the bottom, a checkbox for "Apply recursively to this element and all sub elements?" is checked." style="width: 300px;" class="fr-fic fr-dib">

Below is an example with almost all options selected:

Topbox or custom nets

You can create nets that include values of your choice. Use the boxes at the bottom of dialog to specify a custom statistic. Add the values you want to include, and give the stat a label. If unspecified, the label will be "4, or 5". 

<img src="/uploads/upload/image/5200/direct/1635353319396-1635353319396.png" alt="Close-up of the Box configuration section in the Statistics dialog. Box 1 is checked and shows "4,5" in the values field and "top2" in the label field. Box 2 and Box 3 below are unchecked with placeholder text showing example formats "e.g. 7 or [6,7]" and "label"." class="fr-fic fr-dib">

Result:

<img src="/uploads/upload/image/5200/direct/1586830186104-1586830186104.png" alt="Protobi data view of question Q18 showing the result of applying a custom topbox statistic. The question asks about prescribing additional packets with XR device. Below the distribution showing eight response options (Zero through 5, Other, with percentages and bars), a new row labeled "top2" displays 55.0% with a blue bar, and N shows 100." style="text-align: center; width: 331px;" class="fr-fic fr-dib">

Statistics selections you make for a group will propagate to all children of the group (and recursively to their children).

Control stats order and labels

To specify what order preset statistics like basis and mean appear in, use the stats boxes instead. 

Enter a dollar sign before the stat value (e.g. $mean). Using the stat box instead of selecting the preset stat means you can add a label to the stat, here the mean is labeled as "Average". 

<img src="/uploads/upload/image/5200/direct/1664220970314-1664220970314.png" alt="Statistics dialog showing how to customize preset statistics order and labels. Distribution and Basis checkboxes are checked, while Mean checkbox is unchecked. In the Box configurations below, Box 1 is checked with "4,5" and "Top 2" entered, Box 2 is checked with "$mean" and "Average" entered, and Box 3 is checked with "$basis" and "N" entered." style="width: 300px;" class="fr-fic fr-dib">

Result:

<img src="/uploads%2Fupload%2Fimage%2F5200%2Fdirect%2F1620905045079-1620905045079.png" alt="Protobi data view showing question Q18 with customized statistics labels and order. The distribution shows response percentages from Zero (0) through Other. Below the distribution, three statistics are displayed in the custom order: "Top 2" showing 17% with a bar, "Average" showing 4.98, and "N" showing 0%." style="width: 331px;" class="fr-fic fr-dib">