Experimental Design Review

What is wrong with this graph?

• It should be a straight line

• It should be a pie chart

• It should be a bar graph

• Nothing is wrong with this graph

What is wrong with this graph?

• Nothing is wrong with this graph

• The graph should be a line graph

• The data do not represent parts of a whole

• Too many people are worried

What is wrong with this graph?

• This data should be a line graph

• This data should be represented by a scatter plot

• There is nothing wrong with this graph

• People are buying too much of item D

What is wrong with this graph

• This data should be represented by a scatter plot

• There is nothing wrong with this graph

• This data should be represented with a pie chart

• The students need too many attempts to get the correct answer

What is wrong with this graph

• There is nothing wrong with this graph

• This data should be represented by a pie chart

• This data should be represented by a line graph

• Too many flies were harmed in the making of this graph

What is wrong with this graph?

• There is nothing wrong with this graph

• This data should be represented by a pie chart

• This data should be represented by a scatter plot

• This data should be represented by a bar graph

The type of variable that responds to the experiment and is what you measure to determine if your hypothesis is true.

• Independent

• Dependent

• Control

• Constant

The type of variable that you change or manipulate in an experiment.  It is what you are testing.

• Independent
• Dependent
• Control

The parts of the experiment that must be kept the same.

• Constants
• independent
• Dependent

The purpose of the positive control group is:

• To ensure that the experimental result is not random

• Keeping the variables constant

• To verify that the experimental procedure works

• A placebo group