(I If Two Sets of Data Are in Different Units

question 173

Multiple Choice

(i. If two sets of data are in different units, we can compare the dispersion by using coefficient of
Variation.
(ii. A study is made of the commissions paid to furniture salespersons. If the variance is computed, it
Would be measured in dollars squared.
(iii) The coefficient of variation is a measure of relative dispersion.

• A) (i), (ii) and (iii) are all correct statements
• B) (i) and (ii) are correct statements but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements, but not (i).
• E) (i), (ii) and (iii) are all false statements.

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Definitions:

Diffusion

The passive movement of molecules or particles from an area of higher concentration to an area of lower concentration, until equilibrium is reached.

Allergic Reaction

An immune response to a substance, known as an allergen, that is typically harmless to most people.

Osmosis

The movement of water molecules through a semipermeable membrane from a region of lower solute concentration to one of higher concentration.

Charged Molecules

Molecules that have an electric charge due to the loss or gain of one or more electrons.