Intro to the Scientific Method, Part 2

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Question 1: Do business experiments have a hypothesis?

• No

• Yes

Answer explanation

Yes. All experiments have a hypothesis.

Are all the variable values identical between the control group and experimental group?

• No

• Yes

Answer explanation

No. The value of the independent variables are different (e.g., white vs yellow button).

Tags

NGSS.HS-LS3-3

Is the value of the independent variable the same in the control and experimental group?

• No

• Yes

Answer explanation

No. This is the one difference between the groups. We set this value.

Are the values of the controlled variables the same in the control and experimental groups?

• No

• Yes

Answer explanation

Yes. We want all the values of all controlled variables to be the same in the control and experimental groups.

Do we set the value of the dependent variable?

• No

• Yes

Answer explanation

No. We measure (collect or count) its value (for the control and experimental group) during the experiment.

Can we use a line-graph to plot the number of sales for a button’s colors?

• No

• Yes

Answer explanation

No. Color value (e.g., white, yellow) is not a number. But, we can use a bar graph.

Tags

NGSS.MS-PS3-1

Do we set the value of the independent variable?

• No

• Yes

Answer explanation

Yes. That is how we distinguish the control and experimental groups. In this case, the value was white for the control and yellow for the experimental.