A Sample of Experienced Typists Revealed That Their Mean Typing

question 29

Multiple Choice

A sample of experienced typists revealed that their mean typing speed is 87 words per minute and the median is 73. The standard deviation is 16.9 words per minute. What is the Pearson's coefficient of skewness?

• A) -2.5
• B) -4.2
• C) +4.2
• D) +2.5

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Definitions:

Serrations

Notches or jagged edges found on tools, knives, or some types of leaves, designed to improve function or efficiency.

Contamination

The undesirable introduction of impurities or harmful substances into or on to a clean or pure environment, making it unsafe.

Microorganisms

Tiny living organisms, such as bacteria, viruses, fungi, and algae, that can be seen only with a microscope.

Aseptic Technique

Methods used to prevent contamination by pathogens, particularly in medical procedures or laboratory environments.