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Marketing Basics · Lesson 14 of 15

Measuring Data

Data tells you whether your marketing is working, but only if the numbers are accurate and tied to your goals.

1 Learn the concept

Data tells you whether your marketing is working, but only if the numbers are accurate and tied to your goals. Many marketers collect too much data and act on too little. Good measurement starts with a question, picks the few numbers that answer it and checks that they are recorded correctly. In this lesson you learn how to choose useful metrics, avoid vanity numbers and spot data problems before they mislead you.

A table linking three marketing goals to the metric to track and where the number comes fromFROM GOAL TO METRICGoalMetric to trackWhere it comes fromSell more onlineConversion rate and revenueper visitorStore and website analyticsGrow the email listNew subscribers per weekEmail platformGet more callsCalls from the businessprofileProfile insights
Choose the metric from the goal, not the other way around.

2 See it in action

  • Start with the goal, then choose the metric that shows progress.
  • Vanity metrics, like total followers, look good but may not drive results.
  • Check accuracy: duplicates, missing tracking and inconsistent dates distort numbers.
  • Compare over time and against a benchmark, not in isolation.

Worked example

Catching a data problem before it misleads you

Report: "500 sign-ups this month."

Check: the form platform shows 410 sign-ups.

Cause: 90 of the 500 were duplicate entries and test submissions counted twice.

Math: 500 minus 90 equals 410, which matches the form platform.

Takeaway: always reconcile a number against its source before you report it.

3 Study an example

Example scenario

A shop owner is proud of 10,000 page views. When her marketer checks, most visitors leave within seconds and few buy. The better metric is conversion rate, which shows the page needs work.

4 Apply it and download

  1. Pick one goal and the one metric that best tracks it.
  2. Write where the number comes from and how often you will check it.
  3. Complete the data tracking sheet.

Worksheet Data tracking sheetOpen, print or save as PDF

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