Review Questions- Descriptive Statistics and Graphing

1. Name two measures of central tendency and state a disadvantage of using each method.

2. Which measure(s) of central tendency are not useful for the data below? Why?
   3, 6, 4, 7, 9, 3, 5, 102, 8

3. Which measure(s) of central tendency is (are) not useful for the data below? Why? 
   0, 0, 0, 7.2, 7.3

4. Calculate the mean and median for the data below.
   3, 6, 4, 7, 9, 3, 5, 102, 8

5. Calculate the mean and median of the following data:
   3, 6, 4, 2, 2, 1

6. Calculate the mean and median of the following data:
   64, 75, 72, 68, 66, 66

7. Suppose that a researcher wished to display a graph of the number of each kind of insect found in a field. Explain why a line graph is not appropriate for this type of data.

8. Suppose that a researcher measured air temperature in a forest every hour for 24 hours. What kind of graph would be most appropriate for this data? 
   a) bar graph     b) line graph     c) scatter plot

9. Suppose that a researcher was interested in the growth of pine trees. She measured the mean height of a group of trees each month for a 2-year period and plotted the information on a graph. Which variable should she put on the X-axis of the graph?