An instructor collected data on the number of states students in her class have visited in the U.S. A dotplot for the collected data is shown below.
a. Identify the observational units.
b. Identify the variable recorded and whether it is categorical or quantitative.
c. Describe what the graph tells us about distribution of the variable recorded. Be sure to comment on shape, center, and variability.
d. Use the dotplot to find and report the median value for the number of states visited by the students in this study.
e. Would the mean value for these data be smaller than, larger than, or the same as the median, as reported in (d)? Explain your reasoning.
f. Suppose that the observation recorded as 43 states is a typo and was meant to be 34. If we corrected this entry in the data set, how would the following numerical statistics change, if at all?

Transcribed Image Text:

Mean: Median: Standard deviation: Smaller Same Same Smaller Larger Larger Larger Smaller Same 10 25 How many states you have visited in the US 20 45 35 15 30 40 50 .... .......... ●아5