| In the model tests it was found that some rows and columns had a larger number of zero values than non-zero values. |
| A non-zero coefficient on the duration variable indicates duration dependence. |
| The sampling frame and methods of sample selection shall ensure that every individual and household in the target population is assigned a known and non-zero probability of selection. |
| The mean obtained by taking the reciprocal of the arithmetic mean of the reciprocals of a set of non-zero numbers. |
| All of the techniques described below can be referred to as scientific probability sampling techniques because each element in the target population has a known and non-zero probability of selection. |
| There are no non-zero harmonic forms and so by Hodge theory the first Betti number vanishes. |
