Fundamentals of Statistics contains material of various lectures and courses of H. Lohninger on statistics, data analysis and here for more.

Exercise - Measure your reaction time

Natural processes normally show a random behavior to some extent. This is of course also true for the reaction time to some audio-visual signals. You may try this by yourself by starting the following  interactive example . This application creates visual and/or auditive signals to which you have to react by clicking at a button. The reaction times are recorded and can be loaded into the DataLab to perform some statistical calculations.

For a typical experiment, you should perform 20 runs and store the results in a file. Thereafter, start up  DataLab  and calculate the mean and the standard deviation.

Try to repeat this experiment under different conditions and check whether there are significant differences between the outcomes. You could, for example, measure the reaction time in the morning and in the late evening.

Last Update: 2012-10-08