The heights of 133 tall buildings are shown in the plot. Use the mean, median, count and the movable reference line tools to answer these questions. Click here for the answers.

Q1. What is the height of the shortest building? [click in the graph to zoom in, then click on a point, click on the icon above the eyeball to resize the graph]

Q2. What is the height of the tallest building?

Q3. What is the mean height? [hoover the mouse over the plotted line]

Q4. How many buildings are shorter than the mean?

Q5. How many buildings are taller than the mean?

Q6. What is the median height? [click off mean, click on median, hover the mouse over the plotted line]

Q7. How many buildings are shorter than the median?

Q8. How many buildings are taller than the median?

Q9. Write at least one summary sentence about something you noticed about the mean and median in this data set.

Extension Questions When would you want to use the mean as an average building height? When would you want to use the median as an average building height? Estimate the mode. When would you use this value as an average building height? Why are there so many buildings clumped at 300 to 30 feet?

## Tall Buildings

BACK TO MEASURES OF CENTERThe heights of 133 tall buildings are shown in the plot.

Use the mean, median, count and the movable reference line tools to answer these questions. Click here for the answers.

Q1. What is the height of the shortest building? [click in the graph to zoom in, then click on a point, click on the icon above the eyeball to resize the graph]

Q2. What is the height of the tallest building?

Q3. What is the mean height? [hoover the mouse over the plotted line]

Q4. How many buildings are shorter than the mean?

Q5. How many buildings are taller than the mean?

Q6. What is the median height? [click off mean, click on median, hover the mouse over the plotted line]

Q7. How many buildings are shorter than the median?

Q8. How many buildings are taller than the median?

Q9. Write at least one summary sentence about something you noticed about the mean and median in this data set.

Extension QuestionsWhen would you want to use the mean as an average building height?

When would you want to use the median as an average building height?

Estimate the mode. When would you use this value as an average building height?

Why are there so many buildings clumped at 300 to 30 feet?

CODAP link

http://codap.concord.org/releases/latest/static/dg/en/cert/index.html#shared=19092