Final answer:
Slide timings in a slide show are used to automatically set the time each slide will be shown.
Step-by-step explanation:
The purpose of slide timings in a slide show is to set the time each slide will be shown automatically. This allows the presenter to create a smooth and professional presentation without having to manually advance each slide. By setting slide timings, the presenter can control the pace of the presentation and ensure that each slide is displayed for the appropriate amount of time.