The Law of Small Numbers

0 min read
August 24, 2020

Advertising is a unique mix of art and science. (We previously wrote a deep dive on common pitfalls around measurement in our 5 part Adventures in Significance series.) Phrased in a different manner, advertising is the craft of persuasion measured. 


The measurement aspect of advertising can be difficult because statistics can be surprisingly unintuitive. This is where common sense can get people into sticky situations when it comes to data analysis. More importantly,. why it’s paramount to build the muscle around proper statistical rigor. 


Here are two phrases that apply directly to advertising. They showcase the importance of having a large enough sample.

  • Large Samples are more precise than small samples

This makes intuitive sense. Now for an equivalent statement phrased differently.

  • Small samples yield extreme results more often than large samples do


These appear like different statements and yet ultimately they mean the same thing. There is a famous case detailed in *Thinking Fast and Slow that caused the Gates Foundation to even read the data wrong!


Many researchers have sought the secret of successful education by identifying the most successful schools in the hope of discovering what distinguishes them from others. One of the conclusions of this research is that the most successful schools, on average, are small. In a survey of 1,662 schools in Pennsylvania, for instance, 6 of the top 50 were small, which is an overrepresentation by a factor of 4. These data encouraged the Gates Foundation to make a substantial investment in the creation of small schools, sometimes by splitting large schools into smaller units...Unfortunately, the causal analysis is pointless because the facts are wrong...The truth is that small schools are not better on average; they are simply more variable.


This Law of Small Numbers as Daniel Kahneman named it in Thinking Fast and Slow applies quickly to any analysis in advertising. In short, you can expect more extreme results due to good and bad luck to occur in the ads with less spend than those with enough spend. 


Having a keen grasp of when “enough” has occurred is highly important to any type of successful marketing effort. As we discussed in our Adventures in Significance series, A:A testing can be a great exercise to understand how an unknown system shows variance. 


*If you are a fan of non-fiction and have not read this book, it is well worth the read or **listen. 

**Quick Tip on listening to books, put your tax dollars to work! Libby by Overdrive allows you to borrow ebooks and audiobooks from your local library for “free”. Audible is great but Libby is a fantastic resource.

--

Thanks to Jon Tyson for sharing their work on Unsplash!

Nate Lorenzen
Founder
Jenner Kearns
Chief Delivery Officer
Jenner Kearns
Chief Delivery Officer
Jenner Kearns
Chief Delivery Officer
Kenneth Shen
Chief Executive Officer
Kenneth Shen
Chief Executive Officer
Kenneth Shen
Chief Executive Officer
Kenneth Shen
Chief Executive Officer
Jenner Kearns
Chief Delivery Officer
Kenneth Shen
Chief Executive Officer
Jenner Kearns
Chief Delivery Officer
Jenner Kearns
Chief Delivery Officer
Jenner Kearns
Chief Delivery Officer
Jenner Kearns
Chief Delivery Officer
Kenneth Shen
Chief Executive Officer
Jenner Kearns
Chief Delivery Officer
Kenneth Shen
Chief Executive Officer
Kenneth Shen
Chief Executive Officer
Isla Bruce
Head of Content
Isla Bruce
Head of Content
Isla Bruce
Head of Content
Jenner Kearns
Chief Delivery Officer
Isla Bruce
Head of Content
Kenneth Shen
Chief Executive Officer
Isla Bruce
Head of Content

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Facebook Ads Bidding Strategies can either make or break your advertising campaign. If you've been struggling with getting the best results, understanding the benefits and drawbacks of each strategy can save you both time and money. The right bidding strategy can help you reach your target audience more effectively and get the most out of your advertising budget.

Each bidding strategy has its unique benefits and challenges. Some are great for maximizing visibility, while others prioritize cost-efficiency. Choosing the right one depends on your specific goals, whether that's more clicks, better engagement, or higher sales. Knowing the pros and cons of each strategy will help you make informed choices that benefit your business.

This article will guide you through five key Facebook Ads Bidding Strategies. You’ll learn about their benefits, drawbacks, and how to pick the one that suits your campaign objectives. By the end, you’ll have a clear understanding of which strategy will help you achieve your advertising goals effectively.

Understanding Facebook Bidding Mechanics

Facebook bidding is essential for advertising success. It involves auctions where advertisers compete for ad placements. Understanding key elements like Auction Dynamics and Different Bidding Strategies is crucial.

Auction Dynamics and How Bids Work

In Facebook's auction, ads compete based on bids, estimated action rates, and ad quality. Bid represents how much you're willing to pay for a specific action (like clicks, views, or conversions). The Cost Per Result adjusts based on competition.

Bid Cap lets advertisers set a maximum bid. This ensures spending control but may limit campaign reach. Meta bidding strategies, like Lowest Cost and Target Cost, help optimize for specific goals, balancing cost and performance.

Factors influencing the auction include:

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Exploring Different Bidding Strategies

Advertisers can choose from several Facebook bidding strategies. The Lowest Cost strategy aims to get the most results for the lowest price but may lack spending control. The Cost Cap strategy helps maintain an average cost while driving results.

The Bid Cap strategy is useful for high-control needs, letting you set the max bid per action but it might restrict delivery. Target Cost aims for a stable cost per action, ideal for steady budget planning.

Choosing the right strategy depends on your campaign goals, budget, and desired Cost Per Result. Evaluate each option to find the best fit for your needs.

Implementing Bidding Strategies for Campaign Success

Successful implementation of bidding strategies can drive better results and optimize ad spend. Key factors include setting appropriate bid caps, maximizing returns using ROAS goals, and balancing volume and value.

Setting the Right Bid Cap for Your Campaign

Setting the right bid cap involves determining the maximum amount you are willing to pay for a result. This ensures costs don't exceed the budget. Bid caps can help control spending and improve efficiency.

  • Analyze past performance: Review historical data to identify the highest bid that achieved desired results.
  • Adjust as needed: Be flexible to change bid caps based on real-time campaign performance.
  • Consider the competition: Higher bid caps might be necessary in competitive markets.

Maximizing Returns with ROAS Goals

Use the Return on Ad Spend (ROAS) bid strategy to drive maximum returns. ROAS goals ensure that every dollar spent on ads generates a specific amount of revenue.

  • Calculate target ROAS: Set a realistic ROAS based on past campaigns.
  • Monitor and tweak: Regularly check ad performance and adjust your ROAS goals to meet revenue targets.
  • Balance quality and cost: High ROAS might limit reach, so find a balance between cost and quality.

Balancing Volume and Value in Bidding

Balancing volume and value helps achieve the right mix of reach and profitability. Consider using both Highest Volume and Highest Value strategies.

  • Highest Volume: Bids are set to get the most conversions, good for awareness and large-scale campaigns.
  • Highest Value: Focuses on getting the highest-value conversions, suitable for targeting high-value customers.

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Static ads and dynamic ads serve different purposes in the world of marketing. Static ads are simple and stay the same at all times. They are easy to create and can be effective for straightforward messaging. But dynamic ads offer customization, changing their content to fit the audience's preferences and behaviors.

Dynamic ads might seem complicated, but they bring better results by targeting specific groups with personalized messages. This means higher engagement rates and more conversions. Static ads, on the other hand, are less effort to produce but may not capture attention as effectively.

Deciding between static and dynamic ads depends on the brand's goals and resources. Each has its strengths and can be powerful if used appropriately in a marketing strategy.

Understanding Static and Dynamic Ads

Static ads and dynamic ads serve different purposes in digital marketing. Each has unique features and benefits that cater to varied marketing needs.

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Unpacking Dynamic Advertising

Dynamic ads are more complex. They can change content in real-time based on user data and behavior. Unlike static ads, dynamic ads can alter images, text, and calls to action depending on who is viewing the ad.

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Static Images Vs. Videos

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Leveraging Opportunities for Static Ads

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