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observational

a. 观察[观测] 的

观察[观测] 的

WordNet (r) 3.0 (2006) (WordNet)

observational
adj 1: relying on observation or experiment; "experimental
results that supported the hypothesis" [synonym:
{experimental}, {data-based}, {observational}]

The Collaborative International Dictionary of English v.0.48 (gcide)

Observational \Ob`ser*va"tion*al\, a.
Of or pertaining to observation; consisting of, or
containing, observations. --Chalmers.
[1913 Webster]

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Observational study - Wikipedia
In fields such as epidemiology, social sciences, psychology and statistics, an observational study draws inferences from a sample to a population where the independent variable is not under the control of the researcher because of ethical concerns or logistical constraints
What Is an Observational Study? | Guide Examples - Scribbr
An observational study is used to answer a research question based purely on what the researcher observes There is no interference or manipulation of the research subjects, and no control and treatment groups
What is an Observational Study: Definition Examples
What is an Observational Study? An observational study uses sample data to find correlations in situations where the researchers do not control the treatment, or independent variable, that relates to the primary research question
Observational Studies - PMC
An observational study might be performed if an RCT is unethical, impractical, or outside the control of the investigator There are many types of prospective and retrospective observational study designs However, an observational study design should be avoided if an experimental study is possible
What Are Observational Studies and When Are They Conducted?
Observational studies – which typically account for around 15% of all studies per year – are a method of clinical research that help scientists answer a specific question, or form a hypothesis for further investigation
OBSERVATIONAL | English meaning - Cambridge Dictionary
OBSERVATIONAL definition: 1 involving watching someone or something carefully and closely, in order to learn something: 2… Learn more
OBSERVATIONAL Definition Meaning - Merriam-Webster
The meaning of OBSERVATION is an act or instance of observing a custom, rule, or law How to use observation in a sentence
OBSERVATIONAL Definition Meaning - Dictionary. com
Observational definition: of, relating to, or founded on observation, especially founded on observation rather than experiment See examples of OBSERVATIONAL used in a sentence
Observational Research – Methods and Guide
Observational research is a valuable method for studying natural behaviors, interactions, and environments By carefully selecting the type of observation, defining objectives, and employing ethical practices, researchers can gain insights that other methods may not provide
7 Types of Observational Studies (With Examples) | Indeed. com
Observational studies are research processes where individuals or organizations examine something without manipulating it Most observational studies today involve observing people or animals, but researchers might also observe natural phenomena, such as the weather or volcanoes

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