Standard Deviation and Observations

The video tutorial explains how to set and adjust confidence intervals for tasks, calculate the required number of observations based on standard deviation, and handle cases with only one observation. It highlights the impact of standard deviation on the number of observations needed and provides guidance on editing confidence intervals.

What is the purpose of setting a confidence interval for each task?

• To determine the task's priority

• To calculate the required number of observations

• To estimate the task's completion time

• To assign resources to the task

How is the required number of observations calculated?

• From the standard deviation of the normal time of observations

• By the number of team members

• Based on the task's complexity

• Using the average time of previous tasks

What is the role of standard deviation in determining the required observations?

• It is used to calculate the average time

• It helps in setting the task priority

• It is used to determine the variability in observations

• It is irrelevant to the calculation

What happens when there is a large standard deviation between observations?

• The required number of observations decreases

• The required number of observations increases

• The task is marked as complete

• The task is reassigned to another team

What is the effect of a large standard deviation on the required number of observations?

• It has no effect

• It makes the required number of observations lower

• It makes the required number of observations higher

• It makes the task easier to complete

How does a large standard deviation affect the task analysis?

• It has no effect

• It complicates the analysis

• It simplifies the analysis

• It speeds up the analysis

In a real-world scenario, how does a smaller standard deviation affect the required observations?

• It has no effect on the required observations

• It doubles the required observations

• It increases the required observations

• It decreases the required observations

What does a smaller standard deviation indicate in a real-world scenario?

• Higher variability in task completion time

• Lower variability in task completion time

• No change in task completion time

• Increased task complexity

Can the confidence interval be modified after it is set?

• Only by the project manager

• Only if the task is incomplete

• No, it is fixed

• Yes, it can be edited

Why is it important to edit the confidence interval?

• To allocate more resources

• To complete the task faster

• To ensure accurate calculation of required observations

• To adjust the task's priority