• Body mass index (BMI) is a measure of body fat based on height and weight that applies to adult men and women
• It is a widely used diagnostic to check if a person is underweight, normal or overweight

• BMI is the ratio of a person's weight to the square of the height in metres
• BMI = Weight (in Kgs) / Height^2 (in metres)
• As is evident, the unit for BMI is Kg/M^2

• The following is the BMI of a person with height 1.8 Metres and weight 80 Kgs preceded by the R code calculation

BMI <- 80/1.8^2
BMI

## [1] 24.69136