When Presenting Measures of Central Tendency and Variability,most Researchers Report

question 5

Multiple Choice

When presenting measures of central tendency and variability,most researchers report _____ and_____ ,which are the most _____ descriptive statistics.

• A)means;standard deviations;frequently used
• B)means;standard deviations;precisely defined
• C)means;standard deviations;generally accurate
• D)none of these

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Definitions:

Channel Proteins

Proteins embedded in the cell membrane that allow specific ions or molecules to pass through.

Carrier Proteins

Types of proteins that transport substances across a cell membrane by changing shape or binding and releasing the molecules.

Phospholipids

A class of lipids forming the major component of all cell membranes, characterized by a hydrophilic head and two hydrophobic tails.

Osmotic Pressure

The pressure required to prevent the flow of a solvent through a semipermeable membrane that separates two solutions with different concentrations.