Estimate
An estimate is an educated guess for an unknown quantity or outcome based on known information. The making of estimates isan important part of statistics, since care is needed to provide as accurate an estimate as possible using as little inputdata as possible. Often, an estimate for the uncertainty 
of an estimate 
can also be determinedstatistically. A rule that tells how to calculate an estimate based on the measurements contained in a sample is called anEstimator.
References
Iyanaga, S. and Kawada, Y. (Eds.). ``Statistical Estimation and Statistical Hypothesis Testing.'' Appendix A, Table 23 in Encyclopedic Dictionary of Mathematics. Cambridge, MA: MIT Press, pp. 1486-1489, 1980.
- Monty Hall Dilemma
- Monty Hall Problem
- Moore Graph
- Moore-Penrose Generalized Matrix Inverse
- Mordell Conjecture
- Mordell Integral
- Mordell-Weil Theorem
- Morera's Theorem
- Morgado Identity
- Morgan-Voyce Polynomial
- Morley Centers
- Morley's Formula
- Morley's Theorem
- Morley's Triangle
- Morphism
- Morrie's Law
- Morse Inequalities
- Morse Theory
- Morse-Thue Sequence
- Mortal
- Mortality Problem
- Morton-Franks-Williams Inequality
- Mosaic
- Moser
- Moser's Circle Problem