Determine the type of sampling (random, stratified, systematic,

Computers and Technology

1 answer:

Ann [662]3 years ago

6 0

Answer:

a. Convenience

b. Random

c. Stratified

d. Systematic

Explanation:

Types of sampling:

Random:

The selection of sample is arbitrary and each member has an equal chance of selection.

Convenience

This selection does not take probability of selection into account rather focuses on the convenience and proximity of the member for selection.

Systematic

An ordered system is decided to choose the members for this sample.

Cluster

This sampling plan divided the population into groups, called clusters. A cluster is then randomly selected from the selected population.

Stratified

The members of the population are divided into groups, called strata. A random sample is drawn from each strata.

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The glamorous objective is to examine the items (as being the most valuable and "cheapest" items are chosen) while no item is selectable - in other words, the loading can be reached.

Assume that such a strategy also isn't optimum, this is that there is the set of items not including one of the selfish strategy items (say, i-th item), but instead a heavy, less valuable item j, with j > i and is optimal.

As $W_i < w_j$ , the i-th item may be substituted by the j-th item, as well as the overall load is still sustainable. Moreover, because $v_i>v_j$ and this strategy is better, our total profit has dropped. Contradiction.