Data of happy, moderately happy and very happy is-: (A) Nominal, (B) Ratio, (C) Ordinal, (D) Interval
Answer is C. Scales can be: Qualitative: Categorical scales: Nominal : eg: names of countries . Dichotomous : eg: yes/no, presence/absence. Ordinal : severity of disease: mild/moderate/severe.eg: staging of cancer, kuppusamy socioeconomic class. Quantitative: Metric scales: Interval Ratio