A Researcher Who Uses a Stratified Sampling Technique ____

question 30

Multiple Choice

A researcher who uses a stratified sampling technique ____.

• A) does not select elements from homogeneous subsets of a population
• B) recognizes the extent that subsets that are homogeneous on stratified variables will generally result in homogeneity on other variables as well
• C) cannot estimate that a stratified sample is likely to be more representative on a number of variables than a simple random sample
• D) does not use probability sampling method

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Definitions:

Phi Effect

A phenomenon of visual perception in which the illusion of movement is created when stationary objects are viewed in succession rather than simultaneously.

Visual Cortex

The region of the cerebral cortex responsible for receiving and interpreting sensory signals from the eyes.

fMRI

Functional Magnetic Resonance Imaging, a neuroimaging procedure that measures brain activity by detecting changes associated with blood flow.

Flashing Pattern

A visual signal sequence where light is turned on and off in a particular rhythm or sequence, often used in warning signals or communication devices.