The body mass index (BMI) is calculated from weight and height measurements using the formula BMI = weight (in kg) divided by height (in m -2). The BMI was first introduced by Quetlet in order to eliminate the confounding effects of height on weight.
Share this item with your network: A smartphone is a cellular telephone with an integrated computer and other features not originally associated with telephones, such as an operating system, Web browsing and the ability to run software applications.
Smartphones industry: Statistics & Facts | Statista. Statistics and facts about Smartphones. Smartphones, mobile phones with more advanced computing capabilities and connectivity than regular mobile phones, came onto the consumer market in the late 90s, but only gained mainstream popularity with the introduction of Appleâs iPhone in 2007.