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  2. Marathon - Wikipedia

    en.wikipedia.org/wiki/Marathon

    In 2005, the average marathon time in the U.S. was 4 hours 32 minutes 8 seconds for men, 5 hours 6 minutes 8 seconds for women. [161] In 2015, the men's and women's median marathon times were 4 hours 20 minutes 13 seconds and 4 hours 45 minutes 30 seconds respectively. [162] A goal many runners aim for is to break certain time barriers.

  3. Moving average - Wikipedia

    en.wikipedia.org/wiki/Moving_average

    In statistics, a moving average ( rolling average or running average or moving mean[ 1] or rolling mean) is a calculation to analyze data points by creating a series of averages of different selections of the full data set. Variations include: simple, cumulative, or weighted forms. Mathematically, a moving average is a type of convolution.

  4. List of U.S. states and territories by life expectancy

    en.wikipedia.org/wiki/List_of_U.S._states_and...

    Data in the 2010 columns comes from Health Data. [11] Overall, life expectancy at birth in Hawaii, Washington, California, and New Yorkare among the longest in the nation, while life expectancy at birth in Mississippi, American Samoa, and West Virginiaare among the shortest in the nation.

  5. Long-distance running - Wikipedia

    en.wikipedia.org/wiki/Long-distance_running

    Long-distance running, or endurance running, is a form of continuous running over distances of at least 3 km (1.9 mi). Physiologically, it is largely aerobic in nature and requires stamina as well as mental strength. [ 2] Within endurance running comes two different types of respiration. The more prominent side that runners experience more ...

  6. Life expectancy - Wikipedia

    en.wikipedia.org/wiki/Life_expectancy

    With modern hunter-gatherer populations' estimated average life expectancy at birth of 33 years, life expectancy for the 60% reaching age 15 averages 39 remaining years. [20] Neolithic: 20 [21] –33 [22] Based on Early Neolithic data, life expectancy at age 15 would be 28–33 years. [23] Bronze Age and Iron Age [24] 26

  7. Man-hour - Wikipedia

    en.wikipedia.org/wiki/Man-hour

    A man-hour or human-hour is the amount of work performed by the average worker in one hour. [ 1][ 2] It is used for estimation of the total amount of uninterrupted labor required to perform a task. For example, researching and writing a college paper might require eighty man-hours, while preparing a family banquet from scratch might require ten ...

  8. Mean time between failures - Wikipedia

    en.wikipedia.org/wiki/Mean_time_between_failures

    Mean time between failures ( MTBF) is the predicted elapsed time between inherent failures of a mechanical or electronic system during normal system operation. MTBF can be calculated as the arithmetic mean (average) time between failures of a system. The term is used for repairable systems while mean time to failure ( MTTF) denotes the expected ...

  9. Time complexity - Wikipedia

    en.wikipedia.org/wiki/Time_complexity

    Informally, this means that the running time increases at most linearly with the size of the input. More precisely, this means that there is a constant c such that the running time is at most for every input of size n. For example, a procedure that adds up all elements of a list requires time proportional to the length of the list, if the ...

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