#datum__data_point an item of factual information derived from measurement or research
supertype: information knowledge acquired through study or experience or instruction
subtype: meter_reading.datum__meterreading__reading the data presented to a user by a meter or similar instrument; "he could not believe the meter reading"
subtype: clock_time__clocktime__time the time as given by a clock; "do you know what time it is?"; "the time is 10 o'clock"
subtype: spacecraft_clock_time__SCLK the clock time given by a clock carried on board a spacecraft
subtype: prime_time__primetime the hours between 7 and 11 p.m. when the largest tv audience is available
subtype: time_of_day__hour clock time; "the hour is getting late"
subtype: twelve_noon__noon__high_noon__midday__noonday__noontide the middle of the day
subtype: mealtime the time for eating a meal
subtype: breakfast_time__breakfasttime the time for eating breakfast
subtype: lunchtime__lunch_period__lunchperiod the time for eating lunch; "he observed a regular lunchtime"
subtype: dinnertime__suppertime the time for the evening meal
subtype: late-night_hour the latter part of night
subtype: midnight 12 o'clock at night; the middle of the night; "young children should not be allowed to stay up until midnight"
subtype: small_hours the hours just after midnight
subtype: bedtime the time you go to bed
subtype: lights-out a prescribed bedtime
subtype: closing_time__closingtime the regular time of day when an establishment closes to the public
subtype: dawn__dawning__morning__first_light__firstlight__daybreak__break_of_day__break_of_the_day__dayspring__sunrise__cockcrow the first light of day; "we got up before dawn"; "they talked until morning"
subtype: early-morning_hour__earlymorninghour an hour early in the morning
subtype: sundown__sunset the time in the evening at which the sun begins to fall below the horizon
subtype: gloaming__twilight__dusk__nightfall__evenfall__fall the time of day immediately following sunset; "he loved the twilight"; "they finished before the fall of night"
subtype: night.gloaming a shortening of nightfall; "they worked from morning to night"
subtype: happy_hour__happyhour the time of day when a bar sells alcoholic drinks at a reduced price
subtype: rush_hour the times at the beginning and end of the working day when many people are traveling to or from work
subtype: zero_hour the time set for the start of an action or operation
subtype: canonical_hour__canonicalhour (Roman Catholic Church) one of seven specified times for prayer
subtype: matins__morning_prayer__morningprayer the first canonical hour; at daybreak
subtype: prime the second canonical hour; about 6 a.m.
subtype: terce__tierce the third canonical hour; about 9 a.m.
subtype: sext the fourth of the seven canonical hours; about noon
subtype: nones__none the fifth of the seven canonical hours; about 3 p.m.
subtype: vespers__evensong the sixth of the seven canonical hours of the divine office; early evening; now often made a public service on Sundays
subtype: compline__complin last of the seven canonical hours
subtype: mph__milesperhour a speedometer reading for the momentary rate of travel
subtype: statistic a datum that can be represented numerically
subtype: average__norm a statistic describing the location of a distribution: "it set the norm for American homes"
subtype: age_norm__agenorm the average age at which particular performances are expected to appear
subtype: modal_value__mode the most frequent value of a random variable
subtype: median_value__median the value below which 50% of the cases fall
subtype: mean_value__mean an average of n numbers computed by adding some function of the numbers and dividing by some function of n
subtype: arithmetic_mean__first_moment__firstmoment__expectation__expected_value the sum of the values of a random variable divided by the number of values
subtype: geometric_mean__geometricmean the mean of n numbers expressed as the n-th root of their product
subtype: harmonic_mean the mean of n numbers expressed as the reciprocal of the arithmetic mean of the reciprocals of the numbers
subtype: demographic a statistic characterizing human populations (or segments of human populations broken down by age or sex or income etc.)
subtype: deviation the difference between an observed value and the expected value of a variable or function
subtype: outlier an extreme deviation from the mean
subtype: mean_deviation_from_the_mean__mean_deviation the arithmetic mean of the absolute values of deviations from the mean of a distribution
subtype: moment.statistic the n-th moment of a distribution is the expected value of the n-th power of the deviations from a fixed value
subtype: second_moment the expected value of the square of the deviations of a random variable from the point of origin
subtype: variance the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value
subtype: standard_deviation the square root of the variance
subtype: covariance statistical measure of the variance of two random variables measured in the same mean time period
subtype: nonparametric_statistic__nonparametricstatistic__distribution_free_statistic a statistic computed without knowledge of the parameters of the distribution from which observations are drawn
subtype: rank-order_correlation_coefficient__rank-order_correlation__rank-difference_correlation_coefficient__rank-difference_correlation the most commonly used method of computing a correlation coefficient between the ranks of scores on two variables
subtype: Kendall_test any of several nonparametric measures of correlation (used when the assumptions of standard correlational analysis are not met)
subtype: Kendall_partial_rank_correlation a nonparametric measure of partial correlation
subtype: coefficient_of_concordance a coefficient of agreement (concordance) between different sets of rank orderings of the same set of things
subtype: tau_coefficient_of_correlation__Kendall's_tau__Kendall_rank_correlation a nonparametric measure of the agreement between two rankings
subtype: phi_coefficient__phicoefficient__phi_correlation__phicorrelation__fourfold_point_correlation an index of the relation between any two sets of scores that can both be represented on ordered binary dimensions (e.g., male-female)
subtype: parametric_statistic any statistic computed by procedures that assume the data were drawn from a particular distribution
subtype: regression_coefficient when the regression line is linear (y = ax + b) the regression coefficient is the constant (a) that represents the rate of change of one variable (y) as a function of changes in the other (x); it is the slope of the regression line
subtype: correlation_coefficient__correlationcoefficient__coefficient_of_correlation__correlation a statistic representing how closely two variables co-vary; it can vary from -1 (perfect negative correlation) through 0 (no correlation) to +1 (perfect positive correlation); "what is the correlation between those two variables?"
subtype: Pearson_product-moment_correlation_coefficient__product-moment_correlation_coefficient the most commonly used method of computing a correlation coefficient between variables that are linearly related
subtype: multiple_correlation_coefficient an estimate of the combined influence of two or more variables on the observed (dependent) variable
subtype: biserial_correlation_coefficient__biserial_correlation a correlation coefficient in which one variable is many-valued and the other is dichotomous
subtype: split-half_correlation__chance-half_correlation a correlation coefficient calculated between scores on two halves of a test; taken as an indication of the reliability of the test
subtype: tetrachoric_correlation_coefficient__tetrachoriccorrelationcoefficient__tetrachoric_correlation__tetrachoriccorrelation a correlation coefficient computed for two normally distributed variables that are both expressed as a dichotomy
subtype: time_series a series of values of a variable at successive times
subtype: vital_statistics data relating to births and deaths and health and diseases and marriages
subtype: correlational_statistics__correlation a statistical relation between two or more variables such that systematic changes in the value of one variable are accompanied by systematic changes in the other
subtype: curvilinear_correlation__curvilinearcorrelation__nonlinear_correlation__skew_correlation any correlation in which the rates of change of the variables is not constant
subtype: partial_correlation__partialcorrelation a correlation between two variables when the effects of one or more related variables are removed
subtype: first-order_correlation__firstordercorrelation a partial correlation in which the effects of only one variable are removed (held constant)
subtype: positive_correlation__direct_correlation a correlation in which large values of one variable are associated with large values of the other and small with small; the correlation coefficient is between 0 and +1
subtype: negative_correlation__indirect_correlation a correlation in which large values of one variable are associated with small values of the other; the correlation coefficient is between 0 and -1
subtype: spurious_correlation a correlation between two variables (e.g., between the number of electric motors in the home and grades at school) that does not result from any direct relation between them (buying electric motors will not raise grades) but from their relation to other variables
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