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2. Hundredth - Wikipedia

   en.wikipedia.org/wiki/Hundredth

   Hundredth. In arithmetic, a hundredth is a single part of something that has been divided equally into a hundred parts. [1] For example, a hundredth of 675 is 6.75. In this manner it is used with the prefix "centi-" such as in centimeter. A hundredth is also one percent. A hundredth is the reciprocal of 100.

3. Approximations of π - Wikipedia

   en.wikipedia.org/wiki/Approximations_of_π

   Of these, is the only fraction in this sequence that gives more exact digits of π (i.e. 7) than the number of digits needed to approximate it (i.e. 6). The accuracy can be improved by using other fractions with larger numerators and denominators, but, for most such fractions, more digits are required in the approximation than correct ...

4. Scale factor (computer science) - Wikipedia

   en.wikipedia.org/wiki/Scale_factor_(computer...

   Scale factor (computer science) In computer science, a scale factor is a number used as a multiplier to represent a number on a different scale, functioning similarly to an exponent in mathematics. A scale factor is used when a real-world set of numbers needs to be represented on a different scale in order to fit a specific number format.

5. 68–95–99.7 rule - Wikipedia

   en.wikipedia.org/wiki/68–95–99.7_rule

   In statistics, the 68–95–99.7 rule, also known as the empirical rule, and sometimes abbreviated 3sr, 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, respectively.