Random Sampling Spider Web Steve Harris SPASH - Biology

1 2 3 4 5 6 7 8 2 3 4 5 6 7 8 9 x x x

Sample Calculations: Your results will be different!!! Step 1 Step 3 Cell 1: 480mm Cell 2: 543mm Cell 3: 234mm Cell 4: 390mm Cell 5: 425mm Total: 2,072mm 1.) Ave. = Total / # of Sample Cells 2.) Ave. = 2,072mm / 5 Sample Cells 3.) Ave. = 414mm 1.) Meters of web = Average X # of Total Cells 2.) = 414mm X 56 Cells 3.) = 23184 mm = 2318.4 cm = 231.84 dm = 23.18 Meters of web Step 4 Step 2 Add the cells in Step 1

Name:___________ Hour: ___________ Date: ___________ Spider Web Sampling techniques Calculations Step 1 Step 3 Cell 1: ______ mm Cell 2: ______ mm Cell 3: ______ mm Cell 4: ______ mm Cell 5: ______ mm Total: ______ mm 1.) Ave. = Total / # of Sample Cells 2.) Ave. = _________mm / 5 Sample Cells 3.) Ave. = _________mm 1.) Meters of web = Average X # of Total Cells 2.) = _________ mm X ____Cells 3.) = _________ mm = _________ cm = _________ dm = ________ Meters of web Step 4 Step 2 Add the cells in Step 1