Representing Data
The stem-and-leaf plot below shows the number of pages each student in the class read the previous evening.
35 pages
A poll asks shoppers at the mall how many cups of water they typically drink in a day. The results of the poll are listed below. 3, 5, 5, 6, 6, 6, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 10, 10, 10, 10, 11 What is value of the first quartile?
6
The histograms below show the ages of dogs at four different shelters. For which set of data is the mean most likely greater than the median?
A or B
Which of the following best explains why one graph appears skewed and one graph appears symmetrical?
The interval of the stem-and-leaf plot is not consistent.
Which of the following best explains why one graph appears skewed and one graph appears symmetric?
The interval on the x-axis of the histogram is inconsistent.
A histogram shows data that is skewed to the right. Which most likely describes the relationship between the mean and the median?
The mean is greater than the median. The rightmost values in the data set raise the mean more than the median.
How might the graph be redrawn to emphasize the difference between the cost per doctor visit for each of the three plans?
The scale on the y-axis could be changed to 25-40.
The graphs below display new car values for cars at the same dealership. The graphs display the same data. Which graph is more likely to show a buyer that it is a good time to buy a car?
graph 1 because the x-axis scale makes it look like cars are selling at a lower price
Which best represents the center of the data set below?
median
Which measure is most appropriate to describe the center of the data in the stem-and-leaf plot below?
median
Which measure would be the most appropriate to describe the center of the data in the histogram below?
median
