Lecture 1—Data Collection
Data collection is motivated by questions we want to answer
Today’s question: How far will a thing fling?
Make a guess as to how far you think a thing will fling
What are some factors that might affect how far your thing will fling?
Prior to collecting data, I must decide who or what will provide the data
HOW FAR WILL A THING FLING ACTIVITY
4 Steps in Collecting Data
-then I must decide who or what I am collecting data from
-Definition: Observational Unit—the person or thing to which a number or category is assigned
(for us it was the table groups)
-compare your data will a random list of numbers (e.g. 5, 8, 22, 13)
-what is the difference in the two lists?
-Definition: Data—numbers collected in a particular context
-graphs/charts /tables are good ways to analyze your data
-we will spend a lot of time in the coming lectures discussing this
-go back and answer the question you initially posed
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