```
list = {2, 4, 6, 8};
ListPlot[Labeled[#, #, Center]& /@ list, PlotStyle -> None]
```

[![labeled plot][1]][1]

---

In the more general case in which coordinate pairs are specified, then the expression becomes:

```
dataXY = {{1, 3}, {2, 5}, {3, 7}, {4, 9}};
ListPlot[
  Labeled[#, #[[2]]] & /@ dataXY,
  PlotStyle -> None
]
```

[![scatter plot using (x,y) coordinates and showing y value as label][2]][2]


  [1]: https://i.sstatic.net/UNmWt.jpg
  [2]: https://i.sstatic.net/vt4BR.png