Calculate statistics: procedure

Aim

To calculate descriptive statistics of one or more dependent variables.

Prerequisite

▪You have smoothed data (optional).

▪You have selected data in a Data profile (optional).

To calculate statistics

1.Choose Analysis > Analysis Profile > Open (to open an existing profile) or New (enter a name for the new profile), then click OK.

2.Choose the dependent variable. Click the Add button next to the dependent variable you want to use for analysis. If you do not see that variable name, click the More button.

tip In most cases Distance moved and Velocity are already selected.

3.In the dependent variable-specific tab, select the properties of the dependent variable.

For details on dependent variables, see Dependent Variables in Detail.

4.Choose the Trial statistics. Click the Trial Statistics tab, and choose the statistics you want to calculate for each trial.

5.Choose the Group statistics. Click the Group Statistics tab, choose the statistics you want to calculate as a summary for a group.

example You want to calculate the average and standard error of the Total distance moved, for Control and Treated subjects (we assume here that you create such groups in the Data profile; see Analyze groups of tracks.

Choose Distance moved as a dependent variable, Total as a Trial statistic, and Mean and Standard Error as Group statistics.

6.Repeat steps 2 to 5 to add more dependent variables.

7.Choose Analysis > Results > Statistics and Charts, then click the Calculate button on the toolbar.

8.The Statistics and Charts table appears on the screen.

Notes

▪Some dependent variables are available if you have one or more of the following add-on modules: Social Interaction, Rat/Mouse Behavior Recognition, Trial and Hardware Control.

▪You only can select specific body points if your experiment is set to Center-point, nose-point and tail-base detection.

▪You can change the properties or delete a dependent variable already selected. You can also add multiple instances of a dependent variable, with different settings. See Edit the Analysis profile

▪You can also calculate statistics in batch mode. See Batch calculation