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College statistics and sample mean calculation

4. Earthquake Depths Are the earthquake depths described in Exercise 3 quantitative data
or categorical data?

5. Earthquake Depths Which of the following best describes the level of measurement of
the earthquake depths described in Exercise 3: nominal, ordinal, interval, ratio?

6. Earthquake Depths True or false: If you construct a sample by selecting every sixth earthquake depth from the list given in Data Set 16, the result is a simple random sample.

Is it possible to calculate the sample mean based on the descriptions given above?