Breast density is a hot topic in women's health right now thanks to a new rule from the Food and Drug Administration (FDA) that went into effect in September. Under the rule, all women who get a ...

A new FDA rule states that doctors must talk with patients about breast density after a breast cancer screening. But what does this mean? Lara Vukelich is a freelance writer in San Diego ...

Learn about our editorial policies According to the quantity theory of money, the general price level of goods and services is proportional to the money supply in an economy. If the amount of ...

The probability density function (PDF) is a statistical expression that defines the probability that some outcome will occur. In this function, the probability is the percentage of a dataset's ...