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Market Sizing & Forecasting: Build a Defensible Forecast
Rating: 4.5 out of 5(317 ratings)
1,295 students

Market Sizing & Forecasting: Build a Defensible Forecast

Size your market, forecast sales, and build data-driven projections you can explain and defend.
Created byThomas Giordano
Last updated 5/2026
English
English [Auto],Korean [Auto],

What you'll learn

  • Understanding the principles of market research: Different types of research methods, data collection techniques, and ethical considerations.
  • Learning about market segmentation and targeting: Identifying and defining your ideal customer group.
  • Exploring different market sizing methodologies
  • Understanding market forecasting concepts and models

Course content

4 sections • 17 lectures • 3h 33m total length
  • Intro to the Section0:51

    Gather market data from free reports, government sites, and annual reports as secondary data, collect primary data, then store it centrally and apply segmentation to target customer segments.

  • Finding Market Data from Free Reports15:46

    Discover free, reputable market data from sources like the US Census, the CDC, ARCView, and Our World in Data; learn to download, visualize, and apply it to sizing and forecasting.

  • Finding Market Data from Annual Reports23:13
  • Primary Data24:22
  • Keeping Everything Straight8:46

    Identify common market drivers across business units by collecting primary and secondary data, storing it in a labeled Excel workbook, and distinguishing input from predicted figures to build solid forecasts.

  • Market Segmentation20:46

    Explore market segmentation by demographic, geographic, and psychographic methods, learning how to target resonant customer segments and apply behavioral insights to product strategy.

Requirements

  • There are no course requirements or prerequisites. This course in a foundation course.

Description

WHY IS THIS COURSE IMPORTANT?

How big is the market—and how much of it can you realistically capture?

Those are two of the most important questions behind any new product, service, or business opportunity. Yet market forecasts are often built on assumptions that are difficult to explain or defend.

This course takes a practical, analytical approach. You'll learn how to research a market, estimate its size, identify the portion you can realistically address, and develop forecasts based on data and clearly defined assumptions.

Along the way, you'll learn how to:

  • Find useful market data from credible sources

  • Use primary and secondary market research

  • Organize and evaluate the data you collect

  • Segment a market to better understand the real opportunity

  • Distinguish the total market from the market you can realistically address

  • Use trendlines to forecast from historical data

  • Apply the ATAR and Bass models to new-product forecasting

  • Understand technology adoption using Crossing the Chasm and the Hype Cycle

  • Use CRM and sales-pipeline information to forecast future business

  • Recognize the assumptions and limitations behind any forecast

  • Use the included Excel tools to explore several forecasting techniques

WHO IS THIS COURSE FOR?

This course is designed for product managers, marketers, business-development professionals, entrepreneurs, analysts, consultants, and managers who need to evaluate markets, develop business plans, launch new products or services, or forecast future sales.

WHY LEARN THIS FROM ME?

I've spent more than 35 years in business, moving from engineering to marketing leadership and eventually serving as president of a healthcare IT company. I've also taught MBA students for many years, where market sizing and forecasting was one of my favorite subjects to teach.

My teaching style is very pragmatic. I assume you may be new to the subject, start with the fundamentals, and build from there. Because some forecasting concepts can become complicated quickly, I use practical examples—both healthcare and non-healthcare—to make them easier to understand and apply.

My approach to market sizing and forecasting isn't theoretical. It's based on building forecasts, challenging assumptions, and developing projections that could be explained and defended to management.

My objective isn't to turn you into a forecasting expert. It's to give you practical tools and approaches you can use to answer four important questions:

What do we know? What don't we know? What assumptions are we making? And can we defend them?

By the end of the course, you'll have a practical set of tools for turning market information and business assumptions into forecasts you can explain—and defend.

Who this course is for:

  • Entrepreneurs and aspiring entrepreneurs: Seeking to assess the viability of their business ideas and forecast market growth for successful launch and future planning.
  • Product managers and developers: Aiming to develop products that meet real customer needs and stand out in a competitive market by understanding its size and potential.
  • Engineers trying to learn how to predict product or service sales.
  • Business owners and consultants: Wanting to gain a deeper understanding of their market potential to make informed strategic decisions and secure funding.