Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Somer G. Anderson is CPA, doctor of ...

Mary Hall is a editor for Investopedia's Advisor Insights, in addition to being the editor of several books and doctoral papers. Mary received her bachelor's in English from Kent State University with ...

Every election year, questions arise about how polling techniques and practices might skew poll results one way or the other. In the final weeks before this year’s election, the practice of ...

Approved by the State Council, China carried out 1% National Population Sample Survey at the end of 2005. With the whole country as the population, and provinces, autonomous regions and municipalities ...

Let’s imagine that we are studying a species of beetle. The beetles come in many different colors, and we want to know how common the orange (O) coloring is in this population. This population of ...

BEIJING -- China will launch a nationwide population sample survey in 2025 to help monitor the demographic development of the country, according to the National Bureau of Statistics. Some 14 million ...