9. Improve the model and presents the model and improved
3.3. The principle of random sampling
-
Members of a good representation of the population
* There are important characteristics of the population
* All member units, for example a group together
.* the must have a large enough
- Sampling Technique Based on probability (probabilistic sampling)
don't rely primarily on probability. (non-probabilisitic sampling)
3.4 data characteristics of the data collection
.An important characteristic of the data collection for research are as follows:
1. Must respond to the purpose of the research in its entirety
2. Must meet the answer to the research based on the framework research and used to test hypothetical fully
3.Must have walked carefully carefully to get data according to the actual state
.
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