Roth Is a Computer-Consulting Firm

question 70

Multiple Choice

Roth is a computer-consulting firm. The number of new clients that they have obtained each month has ranged from 0 to 6. The number of new clients has the probability distribution that is shown below. ​ ​
The standard deviation is

• A) 1.45.
• B) 2.09.
• C) 3.1.
• D) 9.61.

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Definitions:

Actuarial Approach

An approach to evaluating and interpreting the data on patients, making predictions, and coming to decisions that rely exclusively on statistical procedures, empirical methods, and formal rules. See also clinical approach.

Equations

Mathematical statements that assert the equality of two expressions, often containing one or more variables.

Algorithms

A defined set of step-by-step procedures or instructions designed to perform a specific task or solve a particular problem.

Validity

The extent to which a concept, conclusion, or measurement is well-founded and corresponds accurately to the real world.