Independent V
What is another name for Independent Variable
Manipulated variable
What is another name for dependent variable?
Response variable
Ms. Jackson's snake Cinnamon hides when it is sunny out and slithers around when it is dark.
What type of variable is "Cinnamon"?
Controlled Variable
Shortly after adopting his cat, Sassy, Thomas realizes that his poor cat isn’t eating very much. After ruling out any illnesses, he determines that Sassy is a huge diva and is simply very picky about the type of food she eats. He decides to run a month-long experiment, separated into four weeks. During the first week, he feeds Sassy normal dry food. During the second week, he feeds her wet canned food. In the third week, he gives her raw salmon. Finally, throughout the fourth week, Thomas feeds Sassy a home-cooked meal of liver and gravy. At the end of the experiment, Thomas compares how much of each type of food Sassy ate.
What is the control group/is there a control group?
Yes- dry cat food.
Look at the graph.
Between what two letters is the car going the slowest?
C and D
The effect the presence of perfume has on the behavior of bees.
The presence of perfume
Do higher water temperatures boil an egg faster?
Time it takes egg to boil.
Mr. Blake notices that Mr. Fowler is more energized when he has chocolate chips for breakfast vs toast.
What variable is "Mr. Fowler"?
Controlled Variable
What is the purpose of a control group?
To have something to compare your changed IV to.
Where is the car going the fastest?
D and E
How effective different brands of plastic wrap are at creating air-tight containers.
Brand of plastic wrap
A ball is dropped from various heights and then how high it bounces is measured.
Bounce height
Mrs. T is growing pumpkins this year. She wants to test if the presence of earthworms affects how large the pumpkins will grow.
What variable would "the pumpkin seed brand" be?
Constant
Cigarette smoking increases the risk of lung cancer.
Based on this hypothesis, what would the control group be in this study?
People who don't smoke.
Which year had more rain in January?
1989
The effectiveness of various metals in preventing rust.
Different types (various) of metals.
The greater the amount of soap in a soap and water mixture, the bigger a soap bubble can be blown.
Size of soap bubble.
Mr. Betzler notices that students work harder when he plays classical music vs jazz.
What type of variable is "the type of music"?
Independent Variable
At a daycare, the staff has had problems with the children behaving badly every day. They begin to test to see how the children react if the staff gives them large amounts of candy when they are good and no candy when they are bad. The staff hopes that the incentive for the children will improve their behavior.
What is the control group/is there a control group?
There is not a control group.
Why are they using a line graph?
Because it shows rain OVER TIME.
The lunch staff wanted to find out if the color of food would affect whether kindergarten children would select it for lunch.
The temperature of water was measured at different depths of a pond.
Temp. of water
Ms. Jackson and Ms. Adcox want to find out how the amount of candy a student eats effects their focus in class.
What type of variable is "the students focus in class"?
Dependent Variable
Is there a specific type of graph used to show control groups vs. experimental groups? What would it be?
There is not- it would depend on what the IV was. It could be any of the graphs, depending.
Can you immediately tell which year had more rain? Why or why not?
No because they both go up and down. You would need to add up the numbers to be sure.