standard_description: Develop a probability distribution for a random variable defined for a sample space in which probabilities are assigned empirically; find the expected value. For example, find a current data distribution on the number of TV sets per household in the United States, and calculate the expected number of sets per household. How many TV sets would you expect to find in 100 randomly selected households?
problem_activity: Problem 1
Below is a dot plot of data showing the amount of time it takes students in Mr. S’s class to get to school.
Draw a line separating the upper half of the data and the lower half of the data.
Circle the median value.
Draw a line showing half of the upper half of the data and another showing half of the lower half of the data.
Estimate your box plot around the lines drawn in the dot plot.
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Problem 2
The plot below shows the results of a survey of households about the number of dogs they have.
Identify the following statements as true or false. Explain your reasoning in each case.
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The maximum number of dogs per house is 8.
At least
$${ \frac{1}{2} }$$
of the houses have 2 or more dogs.
All of the houses have dogs.
Half of the houses surveyed have between 2 and 4 dogs.
Most of the houses surveyed have no dogs.


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