What does each X on the line plot represent?
Each X represents one of the data values.
What is the least amount of time that a swimmer was able to hold his or her breath?
What is the longest amount of time that a swimmer was able to hold his or her breath?
What is the difference between the greatest and least amount of time?
What amount of time could most swimmers hold their breath? How do you know?
Four swimmers could hold their breath for
If each swimmer could hold their breath for a
Each data point (X) would shift
Can you think of a statistical question that this line plot could be used to answer?
Possible response: "How long can the swim team hold their breath?” or "How long can the typical swimmer hold his or her breath?"
Is the data set shown here made up of categorical or numerical data? How do you know ?
Numerical data, because the time was measured.
What is the difference between a non-statistical question and a statistical question?
Statistical questions must be answered with data; non-statistical questions do not require data in order to be answered.
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