Direct drivers of deforestation in Amazon countries Cattle ranching Cattle ranching is the leading cause of deforestation in the Amazon rainforest. In Brazil, this has been the case since at least the 1970s: government figures attributed 38 percent of deforestation from 1966-1975 to large-scale cattle ranching.
The sampling frequency or sampling rate, fs, is the average number of samples obtained in one second (samples per second), thus fs = 1/T. Reconstructing a continuous function from samples is done by interpolation algorithms.
There are a few different types of probability sampling: 1  Simple random sampling is, as the name suggests, the simplest type of probability sampling.  Stratified random sampling involves separating the population into subgroups and then taking a simple random sample from each of these subgroups.