Biology Lab Write Up
1P
Paper Towel Absorbency Experiment Write-Up
Purpose:
The purpose of this experiment is to conduct a valid experiment, realize that the way I conduct an experiment influences the data, and I want to know which paper towel has the higher absorbency times. My hypothesis is that bounty will be the quicker picker upper
Materials and Methods: As a class we chose that our control out of the brands provided (Bounty, Viva, Wal-Mart, and the School brand) would be the Schools brand of paper towel. The treatment I used was to drop one drop of water onto the paper towels using a pipette and I timed it until I saw the water had stopped spreading on the paper towel. To randomize our data we had a sheet of random numbers that we used and we had four cases of replication, which went like this:
• Rep 1: Bounty, School, Wal-Mart, Viva
• Rep 2: Wal-Mart, Bounty, Viva, School
• Rep 3: Viva, Wal-Mart, School, Bounty
• Rep 4: School, Viva, Wal-Mart, Bounty
Other materials we used besides the paper towels were:
• A pipette
• An iPhone stop-watch
• And a three inch by two inch piece of each paper towel
Results:
Figure 1: Average absorbency times
Conclusion:
Based on the results I received from my experiment my hypothesis was proven correct. Bounty was faster than the other brands ether dramatically or just by tenths of a second. Some things that could have affected my data though where the accuracies in my timing, or my visuals of the stop of the spreading of the water
Paper Towel Absorbency Experiment Write-Up
Purpose:
The purpose of this experiment is to conduct a valid experiment, realize that the way I conduct an experiment influences the data, and I want to know which paper towel has the higher absorbency times. My hypothesis is that bounty will be the quicker picker upper
Materials and Methods: As a class we chose that our control out of the brands provided (Bounty, Viva, Wal-Mart, and the School brand) would be the Schools brand of paper towel. The treatment I used was to drop one drop of water onto the paper towels using a pipette and I timed it until I saw the water had stopped spreading on the paper towel. To randomize our data we had a sheet of random numbers that we used and we had four cases of replication, which went like this:
• Rep 1: Bounty, School, Wal-Mart, Viva
• Rep 2: Wal-Mart, Bounty, Viva, School
• Rep 3: Viva, Wal-Mart, School, Bounty
• Rep 4: School, Viva, Wal-Mart, Bounty
Other materials we used besides the paper towels were:
• A pipette
• An iPhone stop-watch
• And a three inch by two inch piece of each paper towel
Results:
Figure 1: Average absorbency times
Conclusion:
Based on the results I received from my experiment my hypothesis was proven correct. Bounty was faster than the other brands ether dramatically or just by tenths of a second. Some things that could have affected my data though where the accuracies in my timing, or my visuals of the stop of the spreading of the water