Independent vs. Dependent Variable Practice

Watch the video. What is the difference between independent and dependent variables? The variable that is being tested in an experiment is called the Dependent Independent Constant Control The variable that changes because of what you changed in an experiment is called the Dependent independent Control Constant When conducting an experiment, how many independent variables should you change? 2 as many as needed 1 SpongeBob Clean Pants SpongeBob noticed that his favorite pants were not as clean as they used to be. His friend Sandy told him that he should try using Clean-O detergent, a new laundry soap she found at Sail-Mart. SpongeBob made sure to wash one pair of pants in plain water and another pair in water with Clean-O detergent. After washing both pairs of pants a total of three times, the pants washed in the Clean-O detergent did not appear to be any cleaner than the pants washed in plain water. Independent Variable Clean-O detergent Dependent Variable how clean the pants are Constant Variable Washing Machine What conclusion should SpongeBob have? Clean-O is a better detergent than plain water Clean-O is a worse detergent than plain water Clean-O has the same effect that plain water has Plant Experiment Using the words from the list below, click on the tags and match the correct words to the tags in the picture below. Make sure you type in the word EXACTLY as you see it or it will be marked wrong. COPY AND PASTE TO BE SAFE! Experimental Group Control Group Dependent Variable Independent Variable Control Group Experimental Group Dependent Variable Independent Variable Matching: Krusty Krabs Breath Mints Mr. Krabs created a secret ingredient for a breath mint that he thinks will "cure" the bad breath people get from eating crabby patties at the Krusty Krab. He asked 100 customers with a history of bad breath to try his new breath mint. He had 50 customers (Group A) eat a breath mint after they finished eating a crabby patty. The other 50 customers (Group B) also received a breath mint after they finished the sandwich, however, it was just a regular breath mint and did not have the secret ingredient. Both groups were told that they were getting the breath mint that would cure their bad breath. Two hours after eating, 30 customers in group A and 10 in group B reported having better breath. Independent Variable Secret Ingredient Dependent Variable Number of people who reported better breath Experimental Group People who got the secret ingredient Control Group People who did not get the secret ingredient Constant Variables crabby patties What is the best conclusion for Mr. Krabbs to determine? The secret ingredient does help bad breath that customers get from crabby patties. The secret ingredient does not help with the bad breath that customers get from crabby patties. There is no change between the bad breath that customers got.