(I) a Frequency Distribution Is Grouping of Data into Classes

question 60

Multiple Choice

(i) A frequency distribution is grouping of data into classes showing the number of observations in each class.
(ii) The midpoint of a class, which is also called a class mark, is halfway between the lower and upper limits.
(iii) A class interval, which is the width of a class, can be determined by subtracting the lower limit of a class from the lower limit of the next higher class.

• 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) All statements are false.

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Definitions:

Battery

A device composed of one or more electrochemical cells that store and provide electrical energy through chemical reactions.

Voltage

The electric potential difference between two points in a circuit, which drives the current flow.

Conductors

Materials or objects that allow the flow of electrical current in one or more directions.

Amps

Short for amperes, a unit of measure for electrical current strength.