Scientific Methods

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 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 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

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 does applause affect performance?

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

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

Mr. Krabbs is trying a new money making scheme.  On Tuesdays he is selling his crabby patties on multicolored 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 multicolored buns
• The number of customers

Which of the following is a possible conclusion?

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

Squidward loves playing his clarinet and believes it attracts more jellyfish than any other instrument he has played. In order to test his hypothesis, Squidward played a song on his clarinet for a total of 5 minutes and counted the number of jellyfish he saw in his front yard. He played the song a total of three times on his clarinet and repeated the experiment using a flute and a guitar. He also recorded the number of jellyfish he observed when he was not playing an instrument. The results are shown in the chart.  
What is the responding variable?

• Number of jellyfish.
• Instrument.
• Length the music was played.
• The song he played.

Squidward loves playing his clarinet and believes it attracts more jellyfish than any other instrument he has played. In order to test his hypothesis, Squidward played a song on his clarinet for a total of 5 minutes and counted the number of jellyfish he saw in his front yard. He played the song a total of three times on his clarinet and repeated the experiment using a flute and a guitar. He also recorded the number of jellyfish he observed when he was not playing an instrument. The results are shown in the chart.  
What is the manipulated variable?

• Number of jellyfish.
• Instrument.
• Length the music was played.
• The song he played.

Squidward loves playing his clarinet and believes it attracts more jellyfish than any other instrument he has played. In order to test his hypothesis, Squidward played a song on his clarinet for a total of 5 minutes and counted the number of jellyfish he saw in his front yard. He played the song a total of three times on his clarinet and repeated the experiment using a flute and a guitar. He also recorded the number of jellyfish he observed when he was not playing an instrument. The results are shown in the chart.  
What is the controlled group?

• The Guitar group
•  the group with no music
•  the Clarinet group 
• the Flute group