Heart rate variability is one of the main things your smartwatch or fitness tracker measures. Here's what it means.

Fitness trackers and smart watches are widely popular wearable devices that measure several types of health metrics, including step count, calories burned, sleep quality, Vo2 max and heart rate. As a ...

Learn about variable life insurance and its risks and rewards.

Variable life insurance is a type of permanent life insurance that provides lifelong coverage and includes an investment component that allows the cash value to grow over time. It offers a way to ...

One overlooked metric that may affect your sleep is your heart rate variability. Here's the link between HRV and your sleep quality. Luke Daugherty is a freelance writer, editor and former operations ...

Heart rate variability (HRV) is the variation in the time between two consecutive heartbeats over a specific period. Doctors may use HRV as an indicator for certain aspects of a person’s health, ...

Analysis of variance (ANOVA) is a statistical analysis tool that separates total variability found within a data set into two components: random and systematic factors.

Lead time is not a nuisance to be endured. It is a strategic dial that governs service, cost, cash and competitiveness.

Sensitivity analysis in finance is a way of looking at the influence of independent variables on dependent ones. Read on to ...