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  2. Mode (statistics) - Wikipedia

    en.wikipedia.org/wiki/Mode_(statistics)

    In statistics, the mode is the value that appears most often in a set of data values. [1] If X is a discrete random variable, the mode is the value x at which the probability mass function takes its maximum value (i.e., x = argmax x i P( X = x i ) ).

  3. Modal testing - Wikipedia

    en.wikipedia.org/wiki/Modal_testing

    Modal impact hammer with interchangeable tips and accompanying temporal and frequency responses. An ideal impact to a structure is a perfect impulse, which has an infinitely small duration, causing a constant amplitude in the frequency domain; this would result in all modes of vibration being excited with equal energy.

  4. Modal analysis - Wikipedia

    en.wikipedia.org/wiki/Modal_analysis

    Car's door attached to an electromagnetic shaker. A photograph showing the test set-up of a MIMO test on a wind turbine rotor. The blades are excited using three mechanical shakers and the response is measured using 12 accelerometers mounted to Blade 3; in the next stage of the test, the accelerometers can be moved to Blade 2 and 3 to measure response at those locations.

  5. Free response question - Wikipedia

    en.wikipedia.org/wiki/Free_response_question

    Free response tests are a relatively effective test of higher-level reasoning, as the format requires test-takers to provide more of their reasoning in the answer than multiple choice questions. [4] Students, however, report higher levels of anxiety when taking essay questions as compared to short-response or multiple choice exams. [5]

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  7. Range mode query - Wikipedia

    en.wikipedia.org/wiki/Range_mode_query

    This can be translated to an answer over , since for any ,,, [] is a mode for [:] if and only if [] is a mode for [:]. We can convert an answer for B {\displaystyle B} to an answer for A {\displaystyle A} in constant time by looking in A {\displaystyle A} or B {\displaystyle B} at the corresponding index.