Which data analysis technique helps a project manager select and implement the corrective actions when a deviation occurs in a project?

Variance analysis is the correct technique for selecting and implementing corrective actions when a deviation occurs in a project. This method involves comparing planned performance against actual performance to identify discrepancies or variances. By analyzing these variances, a project manager can pinpoint specific areas where the project is deviating from the plan, whether it be in terms of scope, schedule, or cost.

Once variances are identified, the project manager can take appropriate corrective actions to realign the project with its objectives. The primary goal of variance analysis is to provide insight into performance and guide management decisions, ensuring that the project stays on track.

Alternatives analysis, on the other hand, involves evaluating different approaches or solutions to a problem rather than focusing directly on deviations. SWOT analysis is used for strategic planning, assessing strengths, weaknesses, opportunities, and threats related to a project but does not specifically address corrective actions for variances. Cost-benefit analysis helps in making decisions based on the financial implications of different actions, but it does not serve directly for evaluating deviations from project plans. Thus, variance analysis is essential for effective project management in response to deviations.