Variants of с |
hose |
Non-selective (concrete and realistic) |
Selective (abstract and Utopian) |
Recommendati |
ons |
Not to plan information analysis methods, until datum character is cleared up |
Not to accumulate datum, until it is exactly decided how to analyze and use them |
Results |
Planning is carried out quickly, analy-sis-slowly |
Planning is carried out slowly, analysis can be quick, providing automatic datum machining |
Longitudinal (historical and dependant of time |
Used, when it is unknown, what takes place and why? |
Collection of great data volume from each member of a small group |
Examples: film, video recording, sound record, observer's log.
A
|
Examples: digital magnetic tape, paper punched tape, graphic record С |
Transversal (quantitative and simultaneous) |
Used, when it is required to specify the scale of what is going on |
Collection of small data volume from each member of a big group |
В Examples: photograph, written description, gathered samples, free interviews |
D Examples: questions with multiple choice of answers; digital counters; repetition count; topographic survey |