| Subject | Icelandic | English |
| math. | breytu sýnatöku brot | variable sampling fraction |
| math. | brot gölluð | fraction defective |
| comp., MS | brot með skálínu | skewed fraction (A fraction that is written on a downward angle: the diagonal fraction bar is placed down and to the right of the numerator, and the denominator is slightly down and to the right of the fraction bar) |
| comp., MS | brot á einni línu | linear fraction (A fraction that is written on a single line: the numerator is placed on the left, followed by the fraction bar, and the denominator on the right. Example: 3/4) |
| comp., MS | brot án brotalínu | no-bar fraction (A fraction that is written vertically with the numerator on top and denominator below, with no fraction bar between them.) |
| math. | ferli meðaltali brot gölluð | process average fraction defective |
| math. | heild sýni brot | overall sampling fraction |
| math. | helstu brot | etiologic fraction |
| math. | helstu brot | attributable risk |
| math. | samræmdu sýnatöku brot | uniform sampling fraction |
| comp., MS | staflað brot | stacked fraction (A fraction that is written vertically with the numerator on the top and the denominator below, with a horizontal fraction bar between them) |
| math. | sýnatöku brot | sampling ratio |
| math. | sýnatöku brot | sampling fraction |