Observation

observerobservationsobservedobserveobservableobservationalobservingobservational biasobserversobserves
Observation is the active acquisition of information from a primary source.wikipedia
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Information

informativeinputintelligence
Observation is the active acquisition of information from a primary source.
Information is conveyed either as the content of a message or through direct or indirect observation.

Scientific method

scientific researchscientificmethod
The scientific method requires observations of natural phenomena to formulate and test hypotheses.
The purpose of an experiment is to determine whether observations agree with or conflict with the predictions derived from a hypothesis.

Hypothesis

hypotheseshypotheticalhypothesized
The scientific method requires observations of natural phenomena to formulate and test hypotheses.
For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it. Scientists generally base scientific hypotheses on previous observations that cannot satisfactorily be explained with the available scientific theories.

Quantitative research

quantitativequantitative methodsquantitative data
Observations can be qualitative, that is, only the absence or presence of a property is noted, or quantitative if a numerical value is attached to the observed phenomenon by counting or measuring.
The process of measurement is central to quantitative research because it provides the fundamental connection between empirical observation and mathematical expression of quantitative relationships.

Field research

fieldworkfield workfield studies
5) Test the hypothesis' predictions by an experiment, observational study, field study, or simulation
Field research involves a range of well-defined, although variable, methods: informal interviews, direct observation, participation in the life of the group, collective discussions, analyses of personal documents produced within the group, self-analysis, results from activities undertaken off- or on-line, and life-histories.

Observational astronomy

astronomical observationobservationsobservational
Observational astronomy
It is the practice and study of observing celestial objects with the use of telescopes and other astronomical instruments.

Introspection

introspectivereflectionself-reflection
Introspection
Introspection is closely related to human self-reflection and is contrasted with external observation.

Observations and Measurements

ISO 19156:2011 ''Geographic information -- Observations and measurementssampling features
Observations and Measurements
Observations and Measurements (O&M) is an International Standard which defines a conceptual schema encoding for observations, and for features involved in sampling when making observations.

Streetlight effect

This is called the "streetlight effect".
The streetlight effect, or the drunkard's search principle, is a type of observational bias that occurs when people only search for something where it is easiest to look.

Measurement

measuremeasuringmeasured
Observations can be qualitative, that is, only the absence or presence of a property is noted, or quantitative if a numerical value is attached to the observed phenomenon by counting or measuring.
In science, an empirical relationship is a relationship or correlation based solely on observation rather than theory.

Observational error

systematic errormeasurement errorsystematic bias
Observational error
Systematic error may also refer to an error with a non-zero mean, the effect of which is not reduced when observations are averaged.

Observable variable

observingobserved variablesobservable
Observable quantity
In statistics, observable variable or observable quantity (also manifest variables), as opposed to latent variable, is a variable that can be observed and directly measured.

Clinical trial

clinical trialsclinical studiesclinical study
Clinical trials are experiments or observations done in clinical research.

Experimental physics

experimental physicistexperimentalexperimental physicists
Experimental physics is the category of disciplines and sub-disciplines in the field of physics that are concerned with the observation of physical phenomena and experiments.

Natural science

natural sciencesnaturalnatural scientist
Natural science is a branch of science concerned with the description, prediction, and understanding of natural phenomena, based on empirical evidence from observation and experimentation.

Observational cosmology

Cosmological observationsobservations relevant to cosmologyobservations
Observational cosmology is the study of the structure, the evolution and the origin of the universe through observation, using instruments such as telescopes and cosmic ray detectors.

Visible-light astronomy

optical astronomyopticalvisible
Visible-light astronomy encompasses a wide variety of observations via telescopes that are sensitive in the range of visible light (optical telescopes).

Qualitative research

qualitativequalitative methodsqualitative analysis
Qualitative research is a scientific method of observation to gather non-numerical data.

Music psychology

music cognitionpsychology of musicmusic perception
Modern music psychology is primarily empirical; its knowledge tends to advance on the basis of interpretations of data collected by systematic observation of and interaction with human participants.

Scientific law

lawlawslaws of nature
Each scientific law is a statement based on repeated experimental observations that describes some aspect of the Universe.

Sniper

sniperssnipingsniper team
In addition to marksmanship and long range shooting, military snipers are trained in a variety of tactical techniques: detection, stalking, and target range estimation methods, camouflage, field craft, infiltration, special reconnaissance and observation, surveillance and target acquisition.

Traffic camera

traffic camerasvideo camerascameras viewed traffic
A traffic camera is a video camera which observes vehicular traffic on a road.

Observer

An observer is one who engages in observation or in watching an experiment.

Indigenous education

indigenous learning stylesIndigenous education § Criticism of the Western educational modelGuidance
These indigenous learning styles often include: observation, imitation, use of narrative/storytelling, collaboration, and cooperation, as seen among American Indian, Alaska Native and Latin American communities.

Bedford Level experiment

The Bedford Level experiment is a series of observations carried out along a 6 mi length of the Old Bedford River on the Bedford Level of the Cambridgeshire Fens in the United Kingdom, during the 19th and early 20th centuries, to measure the curvature of the Earth.