midterm var 2

Which Scrum event is designed for the team to demonstrate a working product increment to stakeholders?

• 1. Sprint Planning

• 1. Daily Scrum

• 1. Sprint Review

• 1. Sprint Retrospective

What do UML sequence diagrams primarily represent?

• 1. The static structure of a system

• 1. The interaction between objects in a sequential order

• 1. The hierarchical structure of system classes

• 1. The database schema and table relationships

A market research firm conducts a survey and finds that 45% of respondents are interested in a new type of product. If the firm surveys 200 people, what is the standard deviation of the number of people interested in the product?

• 1. 6.75

• 1. 7.45

• 1. 10.5

• 1. 15.87

Which statement best distinguishes Agile from Waterfall methodologies?

• 1. Agile focuses on sequential design and development, while Waterfall allows for iterative and incremental progress.

• 1. Agile requires detailed documentation before development starts, while Waterfall focuses on adapting to changes.

• 1. Agile is best suited for projects with clear, unchanging requirements, while Waterfall can handle evolving requirements.

• 1. Agile encourages flexibility and customer feedback throughout development, while Waterfall follows a linear, phased approach.

An investor is considering two projects. Project X has a 70% chance of doubling the investment in a year, while Project Y has a 50% chance of tripling the investment. What is the probability that both projects will succeed in doubling or tripling the investment, respectively?

• 1. 20%

• 1. 28%

• 1. 31%

• 1. 35%

Which measure of central tendency is most affected by outliers in a dataset?

• 1. Mean

• 1. Median

• 1. Mode

• 1. Range

A company evaluates two projects: Project X has an expected NPV of $100,000 with a standard deviation of $20,000, and Project Y has an expected NPV of $150,000 with a standard deviation of $50,000. If the company's decision criterion is to maximize expected NPV while considering risk, which project should they choose?

• 1. Project X, for its higher certainty in outcomes

• 1. Project X, as it represents a lower risk

• 1. Project Y, accepting the higher risk for greater returns

• 1. Project Y, for its higher expected NPV

A business must decide on upgrading its technology infrastructure. The upgrade has a 70% chance of improving efficiency by 30% but comes with a high initial cost. The alternative is maintaining the current system, which has no upfront cost but will decrease efficiency by 5% over time. Which option should the business choose to optimize long-term efficiency?

• 1. Upgrade the technology, accepting the initial cost for an efficiency gain

• 1. Maintain the current system, avoiding the high initial cost

• 1. Upgrade the technology, prioritizing long-term gains

• 1. Maintain the current system, minimizing financial risk

Which of the following is not commonly recognized as a characteristic of big data?

• 1. Volume

• 1. Velocity

• 1. Variety

• 1. Volatility

 A company can purchase insurance for $10,000 to cover potential losses from a $100,000 risk, with a 10% probability of occurring. Should the company purchase the insurance based on expected loss?

• 1. Strong Yes

• 1. Strong No

• 1. Probably No, accepting the risk as part of business operations

• Probably Yes, because the expected loss without insurance is higher