The product match score indicates how well a given product matches a customer's preferences based on their quiz answers.

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By default, it has an x/y format where y is the number of questions in the quiz, and x is the number of times that product was a match for the chosen answer. You can change this format to a % or hide it completely using the Match Score Format settings.
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​The more present a product is as a match to the selected answers the higher its score will be.
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The tolerance slider allows you to set a match score threshold for product recommendations. Set the slider to your desired percentage, and only products that align with quiz answers to that extent will be suggested.
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Excluded products become useful in scenarios where if a particular answer is selected, then certain products should absolutely not be included in the final results.
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If you exclude a product from an answer, and that answer is selected, the product will not be included in the results regardless of the match score it accrued throughout the quiz.
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Being excluded from specific answers doesn't exclude a product from the quiz entirely and it does not impact its final match score. The product can be set as a matched result to any other answer in your quiz and it will still be included in the results based on its match score if that particular answer isn’t selected.