Examlex
One of the least complicated of the endocrine control systems directly responds to changing blood levels of ions and nutrients. Which of the following describes this mechanism?
Standard Error
The typical deviation found in the distribution of sample statistics, often referring to the mean.
T-statistic
A type of statistic used in hypothesis testing, determined by the difference between the sample mean and the population mean divided by the standard error.
Degrees Of Freedom
The number of values in a final calculation of a statistic that are free to vary.
Null Hypothesis
A statement or hypothesis in statistics that suggests no significant difference or effect; it is the hypothesis that researchers aim to test against.
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