BI 101 - General Biology

Use dried beans to test a variety of different population size estimation techniques and learn how sampling error affects data accuracy. Compile and graph data to determine the most accurate method of estimating population size. You will need two documents to complete this Lab:

Tabletop Lab Procedures - Sampling Error (Google Doc)

CU1M1 Lab Report (Google Doc)

It is recommended that you print out the procedures to have on hand while performing the activities. Record your data and answer the analysis questions in the Lab report. Upon completion of this Lab you will complete a Self-check and submit your lab report for assessment.

This Lab requires several "at home" supplies. Be sure to have these on hand when you are ready to start:

• Two sets of dried beans or other small objects of approximately one cup in volume, each set being a different color. Items such as M&Ms or Skittles, or poker chips are suitable alternatives.
• A measure of string (4 meters)
• Four popsicle sticks
• A willing partner (this could even be a child)
• A bowl or large jar from the kitchen (large enough so that the volunteer can easily reach into it)
• A calculator
• A marker pen for the field
• A bandana (to blindfold the volunteer)
• Digital camera