A. Identification of Levels of Measurement
In your study group, identify the levels of measurement (nominal, ordinal, interval, or ratio) as well as type of variable (categorical or quantitative) for each of the following:
- Types of Movies (drama, comedy, adventure, documentary)
- Scores on the SAT Verbal Subtest (note: the scores on the GRE verbal subtest range from 200 to 800)
- Measured amounts of greenhouse gasses (in tons) emitted by cars
- Critics ratings of movies on a scale of 0 to 4 stars
B. Relative Frequency Table for a Quantitative Variable...
A gas station manager recorded the amount of gasoline car owners bought during a one hour time period on a Friday afternoon. The frequency distribution below shows the distribution for amount of gasoline (in gallons) purchased:
Amount of Gasoline (in Gallons) Frequency Relative Frequency
0.0-2.9 2
3.0-5.9 8
6.0-8.9 .15
9.0-11.9 5
12.0-14.9
Total 20
1. Complete the above table, with frequencies and relative frequencies
2. What percentage of gasoline purchases were at least 9 gallons? Please show how you obtain the answer.