Summary
Summary lab material
- Course
- Physics 253a
- Institution
- Southern Illinois University - Carbondale
pre lab for the lab 1
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Pre-Lab Questions1. What are the three different categories of data, and which one is used by scientists?
Nominal data, ordinal data, and interval data are the 3 categories of data. Scientists use
interval data most often.
2. Explain the differences between them.
Nominal data is data collected from two unrelated independent variables and can fit into various
categories. Ordinal data can be ranked or ordered. Interval data can be categorized and ranked
and evenly spaced.
3. What methods do you think will increase the accuracy of the collected data?
The most accurate category of data is the interval data because it takes what nominal data and
ordinal data specialize their data on and combines the two.
4. What is the line of best fit and why is it so important?
A line of best fit is a straight line that minimizes the distance between it and some data. It is
important because it shows the relationship between data and can be used to predict new
patterns.
5. Draw the trend bar in the graphs shown below.
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