Sampling

• What is the formula for scale length?

  length = actual cell length
• Why is sampling necessary in studying populations?

  It's impractical to study every organism
• What is the first step in sampling a population?

  Assign a number to each member
• What does it mean if a sample is biased?

  It does not represent the population as a whole
• What are the steps to choose sample sites from a large area?

  1. Divide area into numbered grid
  2. Select coordinates using random number generator
  3. Take samples at chosen coordinates (e.g. using quadrats or transects)
• What is the significance of using a random sample in research?

  It helps ensure the sample is representative
• What is a common measurement unit mentioned for sampling?

  100 µm
• How can you select a sample group from a population?

  Use a random number generator