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  2. Birthday problem - Wikipedia

    en.wikipedia.org/wiki/Birthday_problem

    The equation expresses the fact that the first person has no one to share a birthday, the second person cannot have the same birthday as the first (⁠ 364 / 365 ⁠), the third cannot have the same birthday as either of the first two (⁠ 363 / 365 ⁠), and in general the n th birthday cannot be the same as any of the n − 1 preceding birthdays.

  3. Demographic dividend - Wikipedia

    en.wikipedia.org/wiki/Demographic_dividend

    Demographic dividend, as defined by the United Nations Population Fund (UNFPA), is "the economic growth potential that can result from shifts in a population’s age structure, mainly when the share of the working-age population (15 to 64) is larger than the non-working-age share of the population (14 and younger, and 65 and older)". [1]

  4. Birthday effect - Wikipedia

    en.wikipedia.org/wiki/Birthday_effect

    A similar study among 12,275,033 Swiss found the highest mortality on the actual birthday (17% greater than the expected value), and the effect was largest for those over 80; [2] another study on Swiss data found a 13.8% excess and was able to link this to specific causes: heart attack and stroke (predominant in women) and suicides and ...

  5. Women over 65 are twice as likely to live in poverty

    www.aol.com/news/2015-08-11-women-over-65-are...

    The fact is that on average, women earn about 78 cents for each dollar brought in by men. And, new data suggest that this is having a significant effect on the Women over 65 are twice as likely to ...

  6. ‘A big cost to be paid’: More Americans over 55 are choosing ...

    www.aol.com/finance/big-cost-paid-more-americans...

    If American women earned minimum wage for their unpaid labor around the house (for roughly four hours of work a day), they would have made $1.5 trillion, according to a New York Times calculation.

  7. Taxes 2023: What's the standard deduction for people over 65?

    www.aol.com/standard-deduction-people-over-65...

    The IRS considers an individual to be 65 on the day before their 65th birthday. The standard deduction for those over age 65 in 2023 (filing tax year 2022) is $14,700 for singles, $27,300 for ...

  8. Shift work - Wikipedia

    en.wikipedia.org/wiki/Shift_work

    Both approaches incur higher wage costs. Although 2nd-shift worker efficiency levels are typically 3–5% below 1st shift, and 3rd shift 4–6% below 2nd shift, the productivity level, i.e. cost per employee, is often 25% to 40% lower on 2nd and 3rd shifts due to fixed costs which are "paid" by the first shift. [48]

  9. Women in the United States labor force from 1945 to 1950

    en.wikipedia.org/wiki/Women_in_the_United_States...

    Middle-class mothers as well as those from the working class were faced with the double shift of working a job and in the home. The table below shows a breakdown by sector of jobs held by women in 1940 and 1950. Women overwhelmingly worked in jobs segmented by sex.