A Company Has a Five-Member Team in Charge of Development

question 1

Multiple Choice

A company has a five-member team in charge of development and maintenance of its information systems.An information system is in place,and the team performs routine maintenance to keep it running smoothly.Which of the following scenarios is an example of adaptive maintenance?

• A) Jason notices a faulty component in the system and modifies the component.
• B) Justin works on the system to make the user interface more user-friendly.
• C) Sara knows that the company is migrating to a new operating environment next month, and makes the appropriate changes to the system.
• D) Dylan predicts that the company's old system may fail under new demands, and takes steps to avert it.
• E) Kiera detects a fault in the coding, which is hampering system performance, and rectifies it.

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Definitions:

Fitted Values

Estimates or predictions generated by a statistical model that represent the best guesses for the dependent variable based on the model and the input values.

Constant Variance

The condition in which the variance of the error terms in a regression model is the same across all levels of the independent variable.

Correlation Coefficient

A numerical index that determines both the magnitude and orientation of a linear correlation between two variables, which can vary between -1 and 1.

Variables

Elements, features, or factors that are likely to vary or change among subjects in a study or a population.