Examlex
An unbiased estimator is a sample statistic whose expected value equals the population parameter.
Electromagnetic Energy
Refers to a form of energy that is reflected or emitted from objects in the form of electrical and magnetic waves that can travel through space.
Ultraviolet Light
A type of electromagnetic radiation with a wavelength shorter than that of visible light but longer than X-rays.
Absolute Threshold
The minimum intensity of a stimulus that one can detect 50% of the time.
Brightness
Lightness or luminance; the dimension of visual experience related to the amount (intensity) of light emitted from or reflected by an object.
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