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The range that tells you when a channel is out of line
You come away knowing each channel's normal range and with a written rule for when to go check, without waiting until Sunday.
By Yodai · Published September 6, 2026 · Updated October 12, 2026
On Thursday you count your WhatsApp messages and there are fifteen. Last week there were eight. Do you raise your ad budget because something's working, or wait until Sunday to see if it settles back to the usual eight, and you jumped the gun for nothing?
If you keep a weekly table for your four channels, you know how much each one brings in during a typical week. What you're missing is knowing how much is "too much" or "too little," so you don't have to wait for your weekly review when the problem, or the opportunity, has been sitting there since Monday.
Normal isn't a number, it's a range
A channel doesn't always bring in the same number of customers. WhatsApp might get you six appointments one week and eleven the next without anything unusual going on: that's its normal variation. The mistake is setting a fixed number, "WhatsApp has to deliver eight," and jumping every time it strays from that.
What you need is a range: the lowest and highest that channel has produced during a normal stretch, no promotions or special dates involved. Anything that falls inside that range is just an ordinary Thursday. Anything outside it is worth looking into before Sunday rolls around.
- 1Gather six to eight weeks
Pull the appointments or messages for each channel from the last six to eight weeks, using the same table you already keep. The more weeks you have, the more reliable the range; with fewer than six, any number can look like an anomaly. - 2Toss out the odd weeks
Leave out any week where you ran a limited-time discount or handed out flyers around the neighborhood. Those weeks aren't the channel working on its own: that's you giving it a push. - 3Note the lowest and highest
From the remaining weeks, write down the weakest and strongest for each channel. That range, say, WhatsApp between six and eleven appointments, search between three and five, is your normal baseline. - 4Give it an expiration date
Write the date you calculated it right next to the range. In two or three months your business will have changed and that range won't hold up anymore; recalculate it using your most recent weeks.
When it's time to take a look, and in which direction
This check isn't just for when a channel tanks. You also need to look when it spikes, because a jump with no obvious cause needs explaining too: maybe someone shared your listing in a group, and that's a reason to respond quickly, not to just let it slide.
The rule is simple: every day, you check where each channel stands for the week so far. If a channel has already passed its usual maximum before Sunday, or if by midweek it hasn't even reached half its usual minimum, you look into it that same day. Midweek, not Monday, because one slow day doesn't tell you anything: a Monday holiday also brings down visits without the channel having any real problem.
Six weeks moving between seven and ten appointments is this channel's normal range. The seventh week drops to three, well below the minimum: that's exactly the kind of jump that justifies looking into it that same day, not waiting for your Sunday review to find out about it days later.
- The normal range for each channel, calculated from your actual recent weeks instead of a made-up number
- The written rule for when it's time to look: your week-to-date total above the maximum or, by midweek, below half the minimum
- The habit of checking first whether something's broken before shifting budget or switching channels