0 Scientific Method and Graphing

Squidward found new reeds to tryout for his clarinet.  He used an APPLAUSOMETER to measure applause after playing  Under the Sea with each reed.  The results were put in the table.
What was the independent variable?

• The Song
• The Reed
• The Applause

Squidward found new reeds to tryout for his clarinet.  He used an APPLAUSOMETER to measure applause after playing  Under the Sea with each reed.  The results were put in the table.
What was the dependent variable?

• The Song
• The Reed
• The Applause

Squidward found new reeds to tryout for his clarinet.  He used an APPLAUSOMETER to measure applause after playing  Under the Sea with each reed.  The results were put in the table.
What was controlled?

• The Song
• The Reed
• The Applause

The data collected supports which of the following questions that Squidward could have tested?

• Which song does the audience prefer?
• Which instrument does the audience like best?
• Which reed length creates the best sound?
• How do applause affect performance?

Mr. Krabbs is trying a new money making scheme.  On Tuesdays he is selling his crabby patties on colored buns.  He usually averages 25 customers per day.  On Tuesdays he now averages 27 customers. 
What was the control?

• The customers 
• The crabby patty
• The colored buns
• The number of customers

Mr. Krabbs is trying a new money making scheme.  On Tuesdays he is selling his crabby patties on colored buns.  He usually averages 25 customers per day.  On Tuesdays he now averages 27 customers. 
What was the independent variable?

• The customers 
• The crabby patty
• The colored buns
• The number of customers

Mr. Krabbs is trying a new money making scheme.  On Tuesdays he is selling his crabby patties on colored buns.  He usually averages 25 customers per day.  On Tuesdays he now averages 27 customers. 
What was the dependent variable?

• The customers 
• The crabby patty
• The colored buns
• The number of customers

Which of the following is a possible conclusion?

• Customers liked blue patties best.
• The colored patties did not increase sales.
• The colored patties increased sales.
• Will colored patties improve sales?

A student wants to test the effects of type of exercise on heart rate.  What is the dependent variable?

• heart rate
• type of exercise
• amount of exercise
• time of day exercise occurs

How many variables can be tested in a controlled experiment?

• one
• two
• three
• as many as possible