If Your Professor Is Only Interested in the Test Performance

question 55

Multiple Choice

If your professor is only interested in the test performance of students in her class, the class is her

• A) Pppulation.
• B) random sample.
• C) biased sample.
• D) non-probability sample.

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Definitions:

Degrees Of Freedom

The number of independent values within a calculation that can freely vary when estimating statistical parameters.

Standard Normal Distribution

A probability distribution that has a mean of zero and a standard deviation of one, represented by the bell curve where most occurrences take place near the mean.

T Distribution

A distribution of probability applied to infer parameters of a population when the sample size is limited and the population's variance is not known.

Degrees Of Freedom

A statistical concept used to determine the number of independent pieces of information when estimating a parameter or fitting a model to data.