Answer
Individuals: Apple iPod Touch, Zune HD, SanDisk Sansa Clip+, Sony X-series Walkman, Apple iPod Nano
Variables: Rating, Memory (GB), Audio Playback Time (hours)
Data for Rating: Outstanding, Excellent, Excellent, Excellent, Very Good
Data for Memory (GB): 32, 32, 4, 16, 8
Data for Audio Playback Time (hours): 40. 33. 15, 33, 24
Variable Rating Type: Qualitative
Variable Memory (GB) Type: Continuous
Variable Audio Playback Time (hours) type: Continuous
Work Step by Step
Individuals are the objects under study.
Variables are the characteristics of the individuals, which can be quantitative, qualitative, discrete or continuous.
Data is the record of each variable.