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Landing Pages

Landing Page Calculator

A Marketo Online Calculator

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If you test too many items, you won’t get significant results. How many test versions can you have? Use this calculator to find out. In only two easy steps, you are on your way to optimizing your landing page strategy with zero help from IT.

To find out how many versions you should create, or how long your test will take, follow these steps:

  1. How many conversions will your landing page test get per day?
    conversions per day
  2. Do you want to:



    How long will you run your test?
    days
    How many versions do you have?
    versions
Advanced options
  1. Expected conversion / response rate
    % (default: 10%)
  2. Resolution of test (as % of conversion rate)
    % (default: 25%)
  3. Type I confidence level of test (zα) (avoid false positives)
    80% confidence (1.282) (default)
    90% confidence (1.643)
    95% confidence (1.960)
  4. Type II confidence of test (zβ) (avoid false negatives)
    80% confidence (0.841) (default)
    75% confidence (0.674)
    50% confidence (0)

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