You would be sampling units 4, 9, 14, 19, and so on to 100 and you would wind up with 20 units in your sample. In order for systematic sampling to work, it is essential that the units in the population be randomly ordered, at least with respect to the characteristics you are measuring.owever, if the goal is to learn about a large population, it is imperative to avoid judgment of nonprobabalistic samples in survey research. [Salant, p64] In contrast to probability sampling techniques, there is no way of knowing the accuracy of a non-probabilistic sample estimate.
Gender is another factor in resting heart rate norms because women at various fitness levels tend to. have higher pulse rates on average than men of comparable fitness levels. For example, the average. resting heart rate of an elite 30-year-old female athlete ranges from 54-59 beats per minute, while the. resting heart rate for men of the same age and fitness level ranges from 49-54.1. Keep in mind that many factors can influence heart rate, including:
any female over 10 years of age should fall within this resting pulse rate range unless they are well trained athletically in this situation the normal resting heart rate can be as low as 40 to 60 beats per minute maintains mayoclinic com