Can you assist with the below questions:
In not less than 200 words and not exceeding 250 words for each question, submit logical answers to the following questions:
Question 1. Discuss the relationship between variance analysis and management by exception.
Question 2. What are the possible causes of material price variance and material efficiency variance?
Question 3. Compare and contrast static budget and flexible budget.
Question 4. Identify and discuss the link between variance analysis and responsibility accounting.