What is variance analysis used for?

Example variance analysis used for

Example variance analysis used for In scope control it is important to determine the cause of any unacceptable variance relative to the scope baseline. This can be done through —   a. Root cause analysis  b. Control charts  c. Inspections  d. Project performance measurements  Answer: d. Project performance measurements  Variance analysis Variance analysis is a tool and technique for control scope. Project performance measurements are used to assess the magnitude of variance, to determine the cause of the variance, and to decide whether corrective or preventive action is required. [Monitoring and Controlling]

In scope control it is important to determine the cause of any unacceptable variance relative to the scope baseline. This can be done through — 

a. Root cause analysis 
b. Control charts 
c. Inspections 
d. Project performance measurements

Answer: d. Project performance measurements 

Variance analysis

Variance analysis is a tool and technique for control scope. Project performance measurements are used to assess the magnitude of variance, to determine the cause of the variance, and to decide whether corrective or preventive action is required. [Monitoring and Controlling]