Advantages and disadvantages of lottery method

The advantage of the lottery method is simple and easy, but the disadvantage is that it is time-consuming, laborious and inconvenient in the case of large overall capacity. If the marked labels are mixed unevenly, it will lead to unfair sampling.

The advantages of random number table method are the same as those of lottery method, but the disadvantage is that it is inconvenient when the overall capacity is large, but it is fairer than lottery method, so these two methods are only suitable for sampling types with small overall capacity.