Essentials of Statistics Chapter 2
terms. Verified to pass 2025/2026
Frequency - correct answer ✔A mathematical function showing the number of instances in which a
variable takes each of its possible values.
Frequency distribution (frequency table) - correct answer ✔Lists data values (either individually or by
groups or intervals), along with their corresponding frequencies (or counts.)
Class - correct answer ✔A set, collection, group, or configuration containing members regarded as
having certain attributes or traits in common; a kind or category.
Class boundary - correct answer ✔The numbers used to separate the classes while preventing gaps
created caused by the class limits.
Note: .5 is generally used for the class boundaries of discrete data.
Lower class limits - correct answer ✔The smallest numbers that can belong to the different classes.
Upper class limits - correct answer ✔The largest numbers that can belong to the different classes.
Class width - correct answer ✔The difference between two consecutive upper class limits or two
consecutive lower class boundaries.
Procedure for constructing a Frequency Distribution - correct answer ✔1. Decide on the number of
classes you want. The number of classes should be between 5 and 20, and the number you select might
be affected by the convenience of using round numbers.
terms. Verified to pass 2025/2026
Frequency - correct answer ✔A mathematical function showing the number of instances in which a
variable takes each of its possible values.
Frequency distribution (frequency table) - correct answer ✔Lists data values (either individually or by
groups or intervals), along with their corresponding frequencies (or counts.)
Class - correct answer ✔A set, collection, group, or configuration containing members regarded as
having certain attributes or traits in common; a kind or category.
Class boundary - correct answer ✔The numbers used to separate the classes while preventing gaps
created caused by the class limits.
Note: .5 is generally used for the class boundaries of discrete data.
Lower class limits - correct answer ✔The smallest numbers that can belong to the different classes.
Upper class limits - correct answer ✔The largest numbers that can belong to the different classes.
Class width - correct answer ✔The difference between two consecutive upper class limits or two
consecutive lower class boundaries.
Procedure for constructing a Frequency Distribution - correct answer ✔1. Decide on the number of
classes you want. The number of classes should be between 5 and 20, and the number you select might
be affected by the convenience of using round numbers.
