Analytics for Beginners: The Five Numbers That Actually Matter
Isabella Moore
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The five numbers
Ignore everything else until you can answer these every month:
- Sessions — how many people actually turned up.
- Engagement rate — of those, how many stayed rather than leaving instantly.
- Conversion rate — of the people who stayed, how many did the thing you wanted.
- Top traffic source — where those people came from.
- Value per hundred sessions — was the traffic worth what it cost you to get it.
| Number | Where to find it | What it tells you |
|---|---|---|
| Sessions | GA4 or your site dashboard | Whether your reach is growing |
| Engagement rate | GA4 engagement report | Whether the visitors are the right ones |
| Conversion rate | A single tracked event or goal | Whether the site does its job |
| Top traffic source | GA4 acquisition report | Which channel deserves more effort |
| Value per hundred sessions | Revenue or goal value divided by sessions | Whether growth is profitable growth |
As a rough guide rather than a rule, content sites tend to sit somewhere around half of sessions engaged, while store conversion rates commonly fall between one and three per cent. Treat those as baselines to investigate, not targets to hit.
Where to find them without paying
Google Analytics is free and takes twenty minutes to install. Search Console is free and tells you what people typed to find you. Your shop or site platform will have its own dashboard. Pick one home for these numbers so you are not cross-referencing four screens to answer a simple question.
Set up one event that matters — a purchase, a form submission, a booking — and everything else becomes secondary.
How often to look
- Weekly, fifteen minutes: is anything broken, did traffic fall off a cliff.
- Monthly, forty-five minutes: compare against last month and the same month last year, write down three observations.
- Never daily. Daily data swings for reasons you cannot control and will push you into changing things that were fine.
A dashboard with forty metrics and no decision attached to any of them is a hobby, not an analysis.
When a number drops
- Check tracking first. A broken tag produces a phantom collapse more often than a real one.
- Compare like with like. This Monday against last Monday, not against a public holiday.
- Look at the source breakdown before blaming your content. A drop in search clicks with steady direct traffic is a different problem from an across-the-board fall.
- Change one thing at a time, then wait long enough to see what it did.
The goal is not to admire the charts. It is to reach a decision: keep doing, do more of, or stop doing.
Common questions
Where should you find them without paying?
Google Analytics is free and takes twenty minutes to install. Search Console is free and tells you what people typed to find you. Your shop or site platform will have its own dashboard. Pick one home for these numbers so you are not cross-referencing four screens to answer a simple question.
When a number drops?
- Check tracking first. A broken tag produces a phantom collapse more often than a real one. 2. Compare like with like. This Monday against last Monday, not against a public holiday. 3. Look at the source breakdown before blaming your content.
