CHAPTERS 16-17 HYPOTHESIS TESTING, AND DETERMINING AND INTERPRETING BETWEEN TWO VARIABLES.
Controlling Variables. Hypothesis The hypothesis is an educated guess about the relationship between...
-
Upload
jemima-davidson -
Category
Documents
-
view
215 -
download
2
Transcript of Controlling Variables. Hypothesis The hypothesis is an educated guess about the relationship between...
![Page 1: Controlling Variables. Hypothesis The hypothesis is an educated guess about the relationship between the independent and dependent variables. Let’s learn.](https://reader036.fdocuments.us/reader036/viewer/2022071806/56649f3e5503460f94c5f6a5/html5/thumbnails/1.jpg)
Controlling Variables
![Page 2: Controlling Variables. Hypothesis The hypothesis is an educated guess about the relationship between the independent and dependent variables. Let’s learn.](https://reader036.fdocuments.us/reader036/viewer/2022071806/56649f3e5503460f94c5f6a5/html5/thumbnails/2.jpg)
Hypothesis
The hypothesis is an educated guess about the relationship between the
independent and dependent variables.
Let’s learn about the 3 types of variables!
![Page 3: Controlling Variables. Hypothesis The hypothesis is an educated guess about the relationship between the independent and dependent variables. Let’s learn.](https://reader036.fdocuments.us/reader036/viewer/2022071806/56649f3e5503460f94c5f6a5/html5/thumbnails/3.jpg)
The 3 types of variables!
![Page 4: Controlling Variables. Hypothesis The hypothesis is an educated guess about the relationship between the independent and dependent variables. Let’s learn.](https://reader036.fdocuments.us/reader036/viewer/2022071806/56649f3e5503460f94c5f6a5/html5/thumbnails/4.jpg)
Independent Variable• Independent Variable – the one thing that is
changed in an experiment–What is tested–What is manipulated
![Page 5: Controlling Variables. Hypothesis The hypothesis is an educated guess about the relationship between the independent and dependent variables. Let’s learn.](https://reader036.fdocuments.us/reader036/viewer/2022071806/56649f3e5503460f94c5f6a5/html5/thumbnails/5.jpg)
Dependent Variable• Dependent Variable: the variable that is
affected by the change in the independent variable–What is measured–What is observed– The data collected during the investigation– the factor that may change as a result of
changes made in the independent variable.
![Page 6: Controlling Variables. Hypothesis The hypothesis is an educated guess about the relationship between the independent and dependent variables. Let’s learn.](https://reader036.fdocuments.us/reader036/viewer/2022071806/56649f3e5503460f94c5f6a5/html5/thumbnails/6.jpg)
Controlled Variables• Constant: a variable that is not changed–Also called controlled variable–Allows for a “fair test”
• Control group: exposed to the same conditions as the experimental group, except for the variable being tested.
• Serves as the standard of comparison.• The control group may be a “no treatment" or
an “experimenter selected” group.All experiments should have
a control group.
![Page 7: Controlling Variables. Hypothesis The hypothesis is an educated guess about the relationship between the independent and dependent variables. Let’s learn.](https://reader036.fdocuments.us/reader036/viewer/2022071806/56649f3e5503460f94c5f6a5/html5/thumbnails/7.jpg)
Identify the variables:• Hypothesis: If we add more air, the ball will
bounce higher.– Independent variable:• the amount of air in the ball
– Dependent variable: • How high the ball bounces
– Controlled variables: • type of ball, drop the ball from the same height, drop the
ball on the same surface
![Page 8: Controlling Variables. Hypothesis The hypothesis is an educated guess about the relationship between the independent and dependent variables. Let’s learn.](https://reader036.fdocuments.us/reader036/viewer/2022071806/56649f3e5503460f94c5f6a5/html5/thumbnails/8.jpg)
Identify the variables:• Hypothesis: If a plant gets sunlight it will
grow taller.• Independent variable: – sunlight
• Dependent variable: – Growth of plants
• Controlled variable: – Type of plant, pot, dirt, water, location, fertilizer