frac{3(40)}{4}={30}\) so the UQ is the 30th number. To find these from the graph we draw two lines across from the vertical axis, one at 10 and one at 30. We read the values for the quartiles from ...

Sampling data - Intermediate & Higher tier - WJEC Cumulative frequency – Intermediate & Higher tier - WJEC Averages and range - WJEC Discussing results - WJEC Mean, median and mode ...

In this plot, the whiskers extended to the greatest or to ... of statistical measures and their presentation in tables and graphs—Part 7 of a series on evaluation of scientific publications ...