This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biostatistics, Subject name: Social & Preventive Medicine
[{'content': 'All of the following are example of nominal scale except- \nSelect and explain. \nA. Age, B. Sex, C. Body weight, D. Socio-economic status', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Body weight comes under metric scales. 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', 'role': 'assistant'}]