A Sample of Five Flooring Installers, Each Carrying Three Types

question 2

Multiple Choice

A sample of five flooring installers, each carrying three types of flooring, was taken and the price per square metre (to the nearest cent) was recorded for each type of flooring, as shown in the table below. (i) The standard deviation for laminate flooring is 0.
(ii. The standard deviation for polyester carpet is $1.48.
(iii) The range for polyester carpet is $1.04.

• 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:

Physical Activity

Any bodily movement produced by skeletal muscles that require energy expenditure, contributing to physical fitness and overall health.

Negative Affectivity

A personality characteristic involving the predisposition to experience negative emotions such as anger, anxiety, or depression more frequently or intensely than average.

Carpal Tunnel Syndrome

Repetitive-motion disorder most frequently associated with keyboarding and the use of optical scanners; occurs when repetitive flexing and extension of the wrist causes the tendons to swell, thus trapping and pinching the median nerve.

Median Nerve

A major nerve in the human body that runs down the arm and forearm, and into the hand, playing a significant role in the control of hand and finger movements.