A hotel chain sent 2,000 guests who visited the hotel within the last month an email asking them to rate the service in the hotel during their most recent visit. Of the 500 who replied, 450 rated the service as excellent.
(a) Identify whether the data are cross sectional or a time series.
(b) Give a name to each variable and indicate if the variable is categorical, ordinal, or numerical (if a variable is numerical, include its units if possible).
(c) List any concerns that you might have for the accuracy of the data.
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