Data Are Collected from a Representative Sample of the Population

question 51

Multiple Choice

Data are collected from a representative sample of the population in a needs assessment when:

• A) collecting data from the entire population is not feasible.
• B) there is concern about response bias.
• C) the population is vastly diverse and spread over a large geographic area.
• D) secondary data are wanted.

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Definitions:

Dipole Moment

A measure of the polarity of a chemical bond within a molecule, quantifying the separation of positive and negative charges in a molecule.

IR Spectrum

A graphical display of infrared light absorption by molecules, useful for identifying functional groups and chemical bonds.

Bending Vibrations

Oscillations of atoms in a molecule about their equilibrium positions that change the angle between them without altering the molecule's bond lengths.

Spectrum

A range of values or conditions, often specifically pertaining to the distribution of energy emitted or absorbed by a substance, visible in bands of colors or intensities.