In his cozy workshop behind his D.C. home, contemporary kumiko craftsman David Gootnick, a Craft Show featured artist, uses the raw material of his practice: a five-foot-long, two-inch-thick plank of ...

Eliana Rodgers / Investopedia The arithmetic mean is the simple average or sum of a series of numbers ... 6.5 Investopedia The geometric mean uses a more complex formula. To calculate the ...