Question

group 1 -random sample

• you will be researching and discussing the advantages of using a random sample as well as the disadvantages of using an opportunity and volunteer sample.

advantages of random sampling disadvantages of the other types of sampling

Explanation:

Random sampling gives every element in the population an equal chance of being selected, reducing bias. Opportunity sampling is based on convenience and may not be representative. Volunteer sampling can attract individuals with a particular interest, skewing results.

Answer:

Advantages of Random Sampling:

• Representative of the population as every element has an equal probability of selection.
• Reduces selection - bias.

Disadvantages of Opportunity and Volunteer Sampling:

• Opportunity sampling: Non - representative as it depends on convenience, may miss certain segments of the population.
• Volunteer sampling: Self - selection bias as those with strong opinions or interests are more likely to participate, skewing the results.