1 / 8

The control group

The control group. What is the control group? Ex: you are testing whether putting a plant under a bright lamp makes it grow faster. Independent variable: Control group: Dependent variable:. The control group is missing the variable you are testing!. The control group.

kirra
Télécharger la présentation

The control group

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The control group • What is the control group? • Ex: you are testing whether putting a plant under a bright lamp makes it grow faster. • Independent variable: • Control group: • Dependent variable: The control group is missing the variable you are testing!

  2. The control group • You wonder whether putting salt on a cucumber will keep it from rotting? • Independent variable: • Control group: • Dependent variable:

  3. The control group • Does eating five KitKats after dinner make your sister fall asleep earlier than usual? • Independent variable: • Control group: • Dependent variable:

  4. So what does a control group tell you? • Tells you whether your independent variable actually had an effect! • It somehow affected the group you were testing • Example: Your sister and the KitKats

  5. Experiment 1 • Did eating KitKats have an effect on what time your sister fell asleep? • How do you know?

  6. Experiment 1 Experiment 2 Experiment 3

  7. Control group • If the results of a control group and experimental group are the same, the variable has no effect. • If the results of a control group and experimental group are DIFFERENT, the variable has an effect.

More Related