Howard's Controls and Variables

I am doing an experiment to see what happens when I leave an egg in a jar of vinegar. Each day I will take observations to see how the egg changes. What type of observations am I making?

• Quantitative

• Qualitative

Which statement below is a hypothesis?

• My dog can run 1 mile in 10 minutes.

• Twins can finish each other's sentences.

• If I add baking soda to my washing machine, then my clothes will come out cleaner.

• Water can remove dust.

I am conducting an experiment to see how many tomato plants I can grown in 90 degree weather. After two weeks I count how many tomatoes are on the plant. What type of data is that?

• Quantitative

• Qualitative

I am doing an experiment to see if giving kids candy at lunch will make them more hyper. The kids are split into 2 groups.

I give Group A a healthy lunch and a candy bar. I give Group B a healthy lunch and no candy at all. Which group is my control group.

• Group A

• Group B

I am doing an experiment to see if students study for 15 minutes a day, will they get better grades. What is the DEPENDENT variable in this experiment? (Remember the dependent variable is what is being measured)

• Students

• The student's grades

• Study Time

• Students height

One way to state a hypothesis is an IF and ________ statement.

• then
• maybe

After conducting an experiment and analyzing the data you can come to a _______________.

• conclusion

• end point

In an experiment, there are usually two groups being tested. What are the two groups we have studied.

• Control Group and Independent Variable

• Control Group and Experimental Group

• Independent Variable and Dependent Variable

The variable that you are testing out, changing, or introducing is the________________.

• Control group

• independent variable

• Data

• dependent variable

Controls don't

• receive experimental treatment

• keep things the same

• keep the experiment the same

• keep procedures the same