Sampling Techniques & Slovin's Formula

What is Slovin's formula used for?

• Calculating population growth rate

• Calculating sample size

• Determining median income

• Estimating average temperature

Calculate the sample size if the population size is 1000 and the margin of error is 5% using Slovin's formula.

• 286

• 400

• 350

• 500

Explain the difference between random sampling and stratified sampling.

• Random sampling divides the population into subgroups based on certain characteristics.

• Stratified sampling selects individuals randomly from the entire population.

• Random sampling selects individuals randomly from the entire population, while stratified sampling divides the population into subgroups based on certain characteristics.

• Random sampling ensures equal representation of all subgroups in the population.

Identify the sampling technique where every nth element is selected from a list as part of the sample.

• Cluster sampling

• Convenience sampling

• Random sampling

• Systematic sampling

If the population size is 5000 and the desired confidence level is 95%, calculate the sample size using Slovin's formula.

• 700

• 358

• 250

• 1500

Calculate the sample size needed with a population of 2000 and a margin of error of 3% using Slovin's formula.

• 1068

• 1500

• 1900

• 1800

The following are Probability Sampling techniques EXCEPT.

• Convenience Sampling
• Systematic Sampling
• Cluster Sampling
• Random Sampling

Mrs. Trahan samples her class by selecting all students sitting at group 1 and group 5 in her classroom.  This sampling technique is called?

• Simple
• Stratified
• Systematic
• Cluster

Mrs. Trahan samples her class by selecting every third person on her class list.  Which type of sampling method is this?

• Simple
• Systematic
• Stratified
• Cluster

Farmer Joe randomly picks 100 trees using a random number generator to estimate the number of apples produced by his apple trees.  This is ______________ sampling.

• Simple
• Stratified
• Cluster
• Systematic