Stephen Eldridge
Contributor
Stephen Eldridge is a writer and editor of fiction and nonfiction for all ages. He has authored nonfiction books for children on a variety of subjects, including forensic science, electromagnetic radiation, and American history. He lives in Chicago, Illinois, with his wife, Ali, and daughter, Lucy.
Primary Contributions (59)
Purchasing power parity (PPP), a measure of the relative value of currencies that compares the prices of purchasing a fixed basket of goods and services in different countries. PPPs can be useful for estimating a more consistent and accurate comparison between different countries’ gross domestic…
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