Sampling Techniques

Which sampling method reduces researcher bias by using random numbers?

• Systematic Sampling

• Random Sampling

• Stratified Sampling

• Cluster Sampling

In systematic sampling, points are selected using:

• Random numbers

• A regular pattern

• Stratified groups

• Random intervals

What is the minimum recommended sample size for a population?

• 50

• 100

• 10% of population

• 500

If a population has fewer than 100 individuals, what should be done?

• Sample 50%

• Sample 10%

• Sample all individuals

• Sample randomly

The maximum sample size should not exceed:

• 500

• 1000

• 10% of population or 1000

• 2000

Which quadrat type is simplest for species list collection?

• Gridded Quadrat

• Point Quadrat

• Open Frame Quadrat

• Circular Quadrat

Which quadrat type uses a grid for more reliable estimates?

• Open Frame

• Gridded Quadrat

• Point Quadrat

• Random Quadrat

Which quadrat type uses pins dropped through holes?

• Open Frame

• Gridded Quadrat

• Point Quadrat

• Frame Quadrat

A limitation of point quadrat sampling is:

• Requires expensive equipment

• Points are hard to relocate for repeat sampling

• Cannot be used for plants

• Too time-consuming

Which sampling method is best for ground-dwelling arthropods?

• Sweep Nets

• Pitfall Trap

• Light Trap

• Kick Sampling