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.
Flag Day Facts. Flag Day is not an official federal holiday but is celebrated every year on June 14th in parades and festivals to honor the American Flag. President Woodrow Wilson set June 14 as Flag Day in 1916, but it was never passed as a holiday by Congress. Keep reading for more information on Flag Day. Remove these ads. Flag Day occurs on June 14th every year, but it is not an official federal holiday.