The Dow Jones Travel Index reported what business travelers pay for hotel rooms per night in...

The Dow Jones Travel Index reported what business travelers pay for hotel rooms per night in major U.S. cities. The average hotel room rates for 20 cities are recorded.

163	177	166	126	123	120	144	173	160	192
125	167	245	146	139	134	167	162	145	207

(e) Which measure of the spread (interquartile range & standard deviation) is better to use here? Briefly justify your answer with a graph generated with StatGraphics. [3]

(f) Determine if there is/are any outlier(s) in the data using the IQR approach. Make sure show all your work. [3]

Expert Solution

Sorry I couldn't generate the graph as I don't have the respective software. But I have generated a graph using excel. It is shown below

As we can see, the curve is not exactly a normally distributed one and hence, the IQR will measure the spread in a better way.

orchestra answered 1 year ago

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