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kate! wrote:

Questions (Click to Show Hidden Text)

1. How does an outlier in the data occur?
2. Why do we need controlled variables?

1. An outlier occurs when there is an error in execution, recording, etc.
2. Controlled variables help make sure only one thing is tested and the results only come from one source.

dxu46 wrote:

kate! wrote:

Questions (Click to Show Hidden Text)

1. How does an outlier in the data occur?
2. Why do we need controlled variables?

Answers (Click to Show Hidden Text)

1. An outlier occurs when there is an error in execution, recording, etc.
2. Controlled variables help make sure only one thing is tested and the results only come from one source.

dxu46 wrote:

Questions (Click to Show Hidden Text)

1. What are some examples of ways to shorten up the procedure?
2. A quantitative experiment's data is represented by a ____ graph (fill in the blank)

1. Use diagrams and just say "repeat" instead of writing everything out.
2. Line graph.
p.s. what would a qualitative experiment be represented by?

kate! wrote:

dxu46 wrote:

Questions (Click to Show Hidden Text)

1. What are some examples of ways to shorten up the procedure?
2. A quantitative experiment's data is represented by a ____ graph (fill in the blank)

Answers (Click to Show Hidden Text)

1. Use diagrams and just say "repeat" instead of writing everything out.
2. Line graph.
p.s. what would a qualitative experiment be represented by?

kate! wrote:

New Questions (Click to Show Hidden Text)

1. Write a sample rationale and hypothesis. Why is it important to have a rationale for your hypothesis?
2. Why would using a bar graph for a quantitative experiment and a line graph for a qualitative experiment not work?

1. If a ball is rolled down ramps of different ramps, then it will roll the farthest on the ramp of the greatest height because there is more potential energy at the start of a higher ramp than the start of a lower ramp, so therefore there is more kinetic energy, so the ball will roll farther.  A rationale is important because it justifies your hypothesis (and it gives you points :D)
2. In a quantitative experiment, you are measuring change, and a bar graph doesn't show change.  In a qualitative experiment, you are comparing the IV levels, and a line graph doesn't compare.

dxu46 wrote:

kate! wrote:

New Questions (Click to Show Hidden Text)

1. Write a sample rationale and hypothesis. Why is it important to have a rationale for your hypothesis?
2. Why would using a bar graph for a quantitative experiment and a line graph for a qualitative experiment not work?

Answers (Click to Show Hidden Text)

1. If a ball is rolled down ramps of different ramps, then it will roll the farthest on the ramp of the greatest height because there is more potential energy at the start of a higher ramp than the start of a lower ramp, so therefore there is more kinetic energy, so the ball will roll farther.  A rationale is important because it justifies your hypothesis (and it gives you points :D)
2. In a quantitative experiment, you are measuring change, and a bar graph doesn't show change.  In a qualitative experiment, you are comparing the IV levels, and a line graph doesn't compare.