What if the highest activity level doesn't have the highest cost?

This can happen due to cost fluctuations or efficiencies, but you must always select your two data points based on the highest and lowest **activity levels**, not the costs.

How many hours should I spend revising the high-low method?

No more than one hour in total. Learn the 5-step method, practice with 3-5 questions until it's automatic, and then move on to more complex topics.

Am I ready for the exam if I can do high-low method questions?

Mastering this topic is a positive sign, but it's only one small part of the syllabus. True readiness comes from being able to answer questions across a wide range of topics under timed conditions.

Is the high-low method likely to be a full long-form question?

It is unlikely to be a full long-form question on its own but is very common as a 2-4 mark part of a larger question, often in Section A or B of the MA exam.

What's the difference between the high-low method and regression analysis?

The high-low method is a simple technique using only two data points, whereas regression analysis is a more statistically robust method that uses all available data points to create a line of best fit.

What should I do if my fixed cost calculation gives a different answer for the high and low points?

This is usually due to rounding the variable cost per unit. Use the unrounded variable cost in your calculation for perfect accuracy, but small differences due to rounding to two decimal places are generally accepted by examiners.

MA Management Accounting

High-Low Method: A Simple Guide

Learn how to use the high-low method to separate fixed and variable costs for your ACCA MA exam. Includes a full worked example and common pitfalls.