1 / 9

Independent Variables

Independent Variables. Think I, I, I… What do I change in the experiment? I change this variable. Dependent Variables. Think D, D, D… What d ata do I collect from this experiment? I d o not have control over this variable. This is typically what I measure…. Controlled Variables.

daria
Download Presentation

Independent Variables

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. Independent Variables Think I, I, I… What do Ichange in the experiment? Ichange this variable.

  2. Dependent Variables Think D, D, D… What data do I collect from this experiment? I do not have control over this variable. This is typically what I measure…

  3. Controlled Variables Think C, C, C… These variables stay Constant throughout the experiment. I Control these variables too!

  4. Practice #1 • Imagine you are going to add fertilizer to plants to see if that changes their growth? • What is are the following? • Independent Variable • Dependent Variable • Controls

  5. Identifying Variables Hypothesis: If fertilizer is used on a plant, then the plant will grow bigger in size. Independent Variable: The amount of fertilizer used measured in grams. • Dependent Variable(s): • Growth of the plant (height) • Controlled Variables: • Same size pot for each plant • Same type of plant • Same type of soil • Same amount of water/light

  6. Practice #2 • Imagine you are going to check if temperature affects growth in plants. So you collect several seeds and place them in pots at different temperatures. • What is/are the following? • Independent Variable • Dependent Variable • Controls

  7. Identifying Variables Hypothesis: How will temperature effect how a plant will grow? Independent Variable: The temperature of the seeds. • Dependent Variable(s): • Growth of the plant (height) • Controlled Variables: • Same size pot for each plant • Same type of plant • Same type of soil • Same amount of water/light

  8. Practice #3 • A group of High School Students is being used to determine the effectiveness of SAT prep classes. • 2 groups of 25 students each are monitored. • The first group is given a prep class before attempting the SAT. • The second group is not given the class. • Their scores are monitored and compared. Identify the IV, DV and controls…

  9. Hypothesis: Will attending an SAT prep class increase SAT scores for high school students? Identifying Variables Independent Variable: Who attends the SAT prep class. • Dependent Variable(s): • SAT Scores • Controlled Variables: • Same testing conditions • Same SAT form test • Same time to prepare • This condition is different because it has a “control group”. Why?

More Related