The standard deviation is expressed in the same units as the mean is, whereas the variance is expressed in squared units, but for looking at a distribution, you can use either just so long as you are clear about what you are using.
2322. Presidents Day (or Presidents' Day), is the common name for the federal holiday officially designated as Washington's Birthday. As the first federal holiday to honor an American citizen, the holiday was celebrated on Washington's actual birthday in 1796 (the last full year of his presidency) on February 22.
On Monday, Radio Shack offered special prices for Presidentsâ Day. Office Depot had discounts, too, in honor of Presidentâs Day. Not to be left out, Macyâs advertised sales of its own to celebrate Presidents Day. Never mind that the federal holiday observed on Monday didnât go by any of those names â not officially, anyway. It was Washingtonâs Birthday, observed on the third Monday of February, as dictated by a 1968 law.