RCA RCA Data Collection and Analysis 2

Question 1

What is 'confirmation bias' and why is it a risk during RCA data analysis?

Accepted Answer

The tendency to seek and interpret evidence that confirms a pre-existing belief about the cause

Answer

The tendency to collect too much data before drawing conclusions

Answer

The tendency to over-document corrective actions

Answer

The tendency to involve too many team members in the analysis

Question 2

In RCA, what is the purpose of a 'data verification' step?

Accepted Answer

To confirm that collected data is accurate, complete, and reliable before analysis begins

Answer

To ensure corrective actions are cost-effective

Answer

To verify that all team members have been interviewed

Answer

To check that the investigation timeline meets regulatory deadlines

Question 3

Which statistical concept helps RCA analysts determine if a data trend is real or due to random variation?

Accepted Answer

Statistical significance testing

Answer

Median calculation

Answer

Root mean square deviation

Answer

Data stratification

Question 4

What does 'common cause variation' mean in the context of RCA?

Accepted Answer

Natural, inherent variation built into a process that occurs routinely

Answer

Variation caused by a specific identifiable event or change

Answer

Variation caused by human error only

Answer

Variation that always requires a corrective action

Question 5

In RCA, what is the value of comparing 'before and after' data when analyzing a process change?

Accepted Answer

It helps determine whether the change is associated with the onset of the problem

Answer

It proves which employee made the change

Answer

It demonstrates regulatory compliance

Answer

It calculates the financial impact of the failure

Question 6

What is the purpose of a 'run chart' in RCA data analysis?

Accepted Answer

To display data over time to reveal trends, shifts, or cycles in a process

Answer

To identify which team members ran the investigation

Answer

To rank corrective actions by implementation speed

Answer

To list all defects found during a quality audit