Question

Classify the following descriptions as either Inferential statistics or descriptive statistics. Enter I if it is inferential statistics. Enter D if it is descriptive statistics.

The average age of the students enrolled in Statistics last semester was 29.7 years old.

There is a relationship between attending class and the grade you receive in the class.

Based on a random sample, it was concluded that the average cost of a hotel room in Chicago was greater than one in Atlanta.

A survey of 100 Statistics students found that the median score for test #1 was a 78.4%.

A study has concluded that the average credit card debt of college graduates had increased from the year 2009 to 2010.

The average Amazon.com rating of the book "The Complete Idiot's Guide to Statistics" by twenty-six reviews is 4.6 on a scale of 1 to 5.

Answer 1

1) The average age of the students enrolled in Statistics last semester was 29.7 years old.

                                   Descriptive

2) There is a relationship between attending class and the grade you receive in the class.

                                   Descriptive                        (Note: if this was based on some samples or tests, it would be infrerential)

3) Based on a random sample, it was concluded that the average cost of a hotel room in Chicago was greater than one in Atlanta.

                                   Inferential

4) A survey of 100 Statistics students found that the median score for test #1 was a 78.4%.

                                   Inferential

5) A study has concluded that the average credit card debt of college graduates had increased from the year 2009 to 2010.

                                   Inferential

6) The average Amazon.com rating of the book "The Complete Idiot's Guide to Statistics" by twenty-six reviews is 4.6 on a scale of 1 to 5.

                                   Descriptive