A hidden global variable must be one that has its scope blocked by a local variable of the same name. To access the hidden variable, use the scope resolution operator ::, such as is ::variable_name. If there is another reason for the hidden status, please clarify and restate the question.

Yes.

It is a continuous variable. As used in probability theory, it is an example of a continuous random variable.

Variable Hypothesis or theory

An example of a hidden variable in psychology is individual differences in personality traits. These traits are not directly observable but can have a significant impact on behavior, thoughts, and emotions. Researchers often use self-report measures or observational methods to indirectly assess these hidden variables.

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