Is BMI ordinal data

No, BMI (Body Mass Index) is not considered ordinal data; it is classified as continuous data. BMI is calculated using a formula that results in a numeric value, allowing for a range of measurements that can be analyzed statistically. While BMI categories (underweight, normal weight, overweight, obesity) can be seen as ordinal, the BMI scores themselves are continuous measurements that can take on any value within a given range.