The number of states students visited. The names of the states visited. An instr
ID: 3040152 • Letter: T
Question
The number of states students visited.
The names of the states visited.
An instructor collected data on the number of U.S. states her students had visited. Identify the variable recorded and whether it is categorical or quantitative.
the number of states visited; quantitative
Tthe names of the states visited; categorical
The number of states visited; categorical
An instructor collected data on the number of U.S. states her students had visited. A dotplot for the collected data is shown below. Describe what the graph tells us about distribution of the variable recorded. Be sure to comment on shape, center, and variability.
Centered about 8, most data is between 2 and 16 and skewed to the left.
Centered about 8, most data is between 2 and 16 and skewed to the right.
Centered about 25, most data is between 2 and 16 and skewed to the right.
An instructor collected data on the number of U.S. states her students had visited. A dotplot for the collected data is shown below. Would the mean value for these data be smaller than, larger than, or the same as the median, as reported in (d)?
Mean will be smaller since the distribution is skewed to the right.
Mean will be the same.
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?
An instructor collected data on the number of U.S. states her students had visited. A dotplot for the collected data is shown below. Identify the observational units.
The students in the class.
The number of states students visited.
The names of the states visited.
0 10 15 20 25 30 35 40 45 50 How many states you have visited in the US
Explanation / Answer
Observational units are entities whose characteristics we measure.
Hence for this case observational unit is The number of states students visited.