LEVELS OF MEASUREMENT (STATISTICS AND PROBABILITY).pptx

LEVELS OF MEASUREMENT

1. LEVELS OF MEASUREMENT

2. METHODS OF DATA COLLECTION

3. Variables were observed or measured using any of the three methods of data collection, namely: objective, subjective, and use of existing records.

4. The objective and subjective methods obtained the data directly from the source. The former uses any or combination of the five senses to measure the variable while the latter obtains data by getting responses through a questionnaire. The resulting data from these two methods of data collection is referred to as primary data .

5. On the other hand, secondary data are obtained through the use of existing records or data collected by other entities for certain purposes.

6. For example, when we use data gathered by the Philippine Statistics Authority, we are using secondary data and the method we employ to get the data is the use of existing records. Other data sources include administrative records, news articles, the internet, and the like.

7. Four levels of measurement: Nominal, Ordinal, Interval, and Ratio Knowing what level the variable was measured or observed will guide us to know the type of analysis to apply. Three methods of data collection include objective, subjective, and use of existing records. Using the data collection method as a basis, data can be classified as either primary or secondary data.