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Which of the following variables must be measurable?
A. Controlled Variable
B. Dependent Variable (DV)
C. Independent Variable (IV)
D. All of the above
D. All of the above
How many independent variable(s) can you have in an experiment?
A. 1
B. 2
C. 3
D. As many as the researchers please
A. 1
What refers to the group of variables that does not receive intervention?
A. Control group
B. Experimental group
C. Participant group
D. Treatment group
A. Control group
What is the independent variable (IV) in temperature versus solubility rate?
A. Amount of Solute
B. Particle Size of Solute
C. Temperature Variation
D. Volume of Solvent
C. Temperature Variation
Which variables must be manipulated to know the effect of feeds on the egg production of poultry?
A. Egg Production
B. Effect
C. Feeds
D. Poultry
C. Feeds
What should be the control variable (CV) if you want to know the effect of temperature on the production of bacteria on food in the school canteen?
A. Production of Bacteria
B. Temperature
C. Time
D. Type of Food
D. Type of Food
Identify the dependent variable (DV) in the given statement: "Jason adds extra sugar to make it sweeter."
A. Amount of Sugar
B. Level of Sweetness
C. Both A and B
D. None of these
B. Level of Sweetness
A farmer applies different fertilizers to his tomato crops to see which will make his plants grow the highest. What is the independent variable (IV)?
A. Growth of tomato plants
B. Height of tomato plants
C. Types of Fertilizers
D. Variety of Tomato Plants
C. Types of Fertilizers
I apply different chemicals on my lawn to see which kills the most weeds. What is the dependent variable (DV)?
A. Number of weeds killed
B. Types of chemicals
C. Types of weeds
D. Ways of applying chemicals
A. Number of weeds killed
Analyze the following statement: The deeper I cut, the more it will bleed. The two variables given are the depth of the cut and the level of bleeding. Which of these is the independent variable (IV)?
A. Depth of cut
B. Level of bleeding
C. Both A and B
D. None of the above
A. Depth of cut
Examine the following statement: Sheila is required to pay a fine for crossing the street while the traffic light is red. The two variables in question are paying a fine and crossing the red light. Which of these variables is considered the independent one?
A. Crossing the red light
B. Paying a fine
C. Both A and B
D. None of these
A. Crossing the red light
Analyze the following statement: If you add more milk, the tea will get a lighter color. The two variables given are the amount of milk and color of the tea. Which of these is considered the dependent variable (DV)?
A. Amount of milk
B. Color of the tea
C. Both A and B
D. None of the above
B. Color of the tea
Helen may experience laziness if she consumes an excessive amount of food. The two variables in question are the quantity of food consumed and the level of laziness. Which of these variables is regarded as the dependent one?
A. Amount of food consumed
B. Level of laziness
C. Both A and B
D. None of the above
B. Level of laziness
In a study about headaches, doctors gave patients Aleve, Tylenol, Advil, and Excedrin to see which medication would relieve the headache pain the fastest. The doctors timed how long it took the pill to work. What is the dependent variable (DV)?
A. Amount of medication
B. Amount of time until the pain was relieved
C. Headaches
D. Types of pain relievers
B. Amount of time until the pain was relieved
Scientists wanted to determine the levels of pollution that a fish could withstand. They placed fish in tanks with differing pollution levels and timed how long they could live under those conditions. What is the independent variable (IV) in the experiment?
A. Amount of time survived
B. Levels of pollution
C. Types of fish
D. Types of pollution
B. Levels of pollution