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A study by Emmanuel Saez and Piketty showed that the top 10 percent of earners earned more than half of the country's total income in 2012, the highest level recorded since the government began collecting the relevant data a century ago. [64] People in the top one percent were three times more likely to work more than 50 hours a week, were more ...
In statistics, the 68–95–99.7 rule, also known as the empirical rule, and sometimes abbreviated 3sr or 3 σ, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution: approximately 68%, 95%, and 99.7% of the values lie within one, two, and three standard deviations of the mean ...
Four times as many as one. quadrupled. 300% Five 500% Four times more than one, or 400% more than one, because = +. Five times as many as one. quintupled 400% Six 600% Five times more than one, or 500% more than one, because = +. Six times as many as one. sextupled. 500% Ten 1,000%
The table starts counting approximately 10,000 years before present, or around 8,000 BC, during the middle Greenlandian, about 1,700 years after the end of the Younger Dryas and 1,800 years before the 8.2-kiloyear event. From the beginning of the early modern period until the 20th century, world population has been characterized by a rapid growth.
Thus at 3.5% inflation using the rule of 70, it should take approximately 70/3.5 = 20 years for the value of a unit of currency to halve. [ 1 ] To estimate the impact of additional fees on financial policies (e.g., mutual fund fees and expenses , loading and expense charges on variable universal life insurance investment portfolios), divide 72 ...
There was more disagreement on the strength of future warming: i.e. around 30% believed that there was a less than 50% chance that the warming would reach or exceed 2 °C (3.6 °F) over the next 100 years, while a larger fraction (almost 40%) thought such temperatures were at least 75% likely. [46] [21]
When the price elasticity of demand is unit (or unitary) elastic (E d = −1), the percentage change in quantity demanded is equal to that in price, so a change in price will not affect total revenue. When the price elasticity of demand is relatively elastic (−∞ < E d < −1), the percentage change in quantity demanded is greater than that ...
2 hs (3 min 20 s): The average length of the most popular YouTube videos as of January 2017 [15] 5.55 hs (9 min 12 s): The longest videos in the above study 7.1 hs (11 m 50 s): The time for a human walking at average speed of 1.4 m/s to walk 1 kilometre 10 3: kilosecond ks minutes, hours, days (1 ks = 16 min 40 s = 1,000 s)