Any mark in a cell counts, whatever it says.
Trainers ticked attendance however they liked — a tick, an x, the word Yes. In G2:G6 give the number of sessions each person attended.
Solve it on your own to keep the bonus. Each hint gets one step closer to the formula.
The same formula in the other shapes it takes at work.
This is the grid you start with. Cell references in the task — B6, C2 — point at the row numbers and column letters below.
| A | B | C | D | E | F | G | |
|---|---|---|---|---|---|---|---|
| 1 | Name | S1 | S2 | S3 | S4 | S5 | Attended |
| 2 | Abel | ✓ | ✓ | ✓ | ✓ | ||
| 3 | Bea | x | x | ||||
| 4 | Cy | Yes | Yes | Yes | Yes | Yes | |
| 5 | Di | ✓ | |||||
| 6 | Ed | ✓ | x | Yes |
COUNTIF on "✓" would miss the x and the Yes. When any entry means the same thing, COUNTA is the right tool — it does not care what was typed, only that something was. The cost is that a stray space also counts, so it pays to keep blanks genuinely empty.