Math Crossword

4. The distance around the edge of a shape.
6. Three values that split sorted data into four parts, each with an equal number of observations.
10. The branch of mathematics concerned with specific functions of angles and their application to calculations.
11. The number of times an event or a value occurs.
12. The middle value of any interval.

1. The largest number minus the smallest number.
2. Part of a line or curve.
3. The middle number, when in order.
5. Mean squared difference between each data point and the centre of the distribution measured by the mean.
7. The most common number.
8. The average of all of the numbers.
9. The total space taken up by a flat surface or shape of an object.