Lesson 5: SELECTION OF THE SAMPLE AND DATA COLLECTION
Data can be divided into two types, namely quantitative and qualitative. Quantitative data is numerical in nature and can be mathematically computed . Quantitative data measure uses different scales, which can be classified as nominal scale, ordinal scale, interval scale and ratio scale. Nominal scale is used to categorize items into different group, for example male and female, different examination grades, different races in a country, different types of companies different shoe sizes and so on. The statistics that is used to analyze this type of data is mode.