What statistical question might Molly have asked to collect this data?
Possible answer: "On average, how many hours of TV do you watch per week?"
How do you think she might have collected this data?
Possible answer: by asking all the students in her class how many hours of TV they watch per week.
How many students did she survey?
How would you describe the shape of the data?
Given that the data is symmetrical, which measure of center should Molly use to describe the data set?
Answers vary; students might recall that the mean and median are close in value in a symmetrical data set, but guide students to recognize that the mean is the better choice because it is a value that takes into account the value of each data point.
What is the mean for the data Molly collected?
What does a mean of 6.6 represent in the context of this problem?
Possible answer: Molly’s classmates tend to watch 6.6 hours of TV per week.
How many students watch 7 or more hours of TV per week?
If each of the students' names from the survey were put in a hat, what is the probability of picking a student that watches 7 or more hours of TV per week? How do you know?
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