The Test Statistic (X)for the Sign Test Is Equal to ______

question 33

Multiple Choice

The test statistic (x) for the sign test is equal to ______.

• A) variability attributed to the groups divided by variability attributed to error
• B) the number of pluses or minuses, whichever occurs most often
• C) the number of scores that are less than or equal to the median value
• D) the number of positive scores divided by the number of negative scores

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Definitions:

Myelination

The phenomenon in which glial cells wrap themselves around the axons of neurons, providing an insulating sheath that facilitates the conduction of electrical impulses.

Methylation

An epigenetic change that makes the expression of a gene less likely. It involves the addition of a methyl group (an organic molecule) to DNA, either to the coded gene or to regulatory DNA. Or, it can involve the addition of a methyl group to histones that bind with DNA.

Epigenetic Change

Modifications in gene expression caused by mechanisms other than changes in the underlying DNA sequence, influenced by environmental factors.

Gene Expression

The process by which the information encoded in a gene is used to direct the assembly of a protein molecule.