standard_description: Use measures of center and measures of variability for numerical data from random samples to draw informal comparative inferences about two populations. For example, decide whether the words in a chapter of a seventh-grade science book are generally longer than the words in a chapter of a fourth-grade science book.
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.
[IMG]
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.
[IMG]
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.


aligns: no