1. Unit 1 – Lesson 3 (Representing Data)

2. How do Scientists Make Sense of Data?
Scientific Investigations involve the collection of Data; facts, figures, and other evidence that scientists gather.

3. Scientists Organize Data
Data Tables allow scientists to record observations in an orderly way.

4. Scientists Graph and Analyze Data
Scientists Graph data in order to determine trends and patterns within data.

5. What do Graphs Show?
Circle Graph – Used when showing how each group relates to the whole
Bar Graph – Used to display and compare data in a number of categories
Line Graph – Shows continuous change

6. How do Scientists Evaluate Models?
Scientific Model: can be a visual or mathematical representation of an object or system.
Models help scientists make predictions before an investigation.

7. How do Scientists Evaluate Models?
By how much they can Explain.
Ex. Data from Biology, Chemistry, and Physics went into the making of DNA model.

8. How do Scientists Evaluate Models?
By How Well they can Adapt.
Ex.) Once scientists had a working model of DNA, it allowed scientists to speculate how genetic information is carried.

9. How do Scientists Evaluate Models?
By the Fewest Limitations

10. What Principles do Scientists use when Measuring Experimental Results?
Scientists Measure for Precision and Accuracy.

11. Precision
Precision: The exactness of a measurement

12. Accuracy
Accuracy: how well or how closely data agree with a known standard.