The Effect of Aspirin The Effect of Aspirin Concentrated Water on the Concentrated Water on the

Growth of Plants Growth of Plants

Tim Ko

Problem StatementProblem Statement

Will the presence of aspirin concentrated water in soil affect the growth of plants?

HypothesisHypothesis

If an aspirin concentration of water is increased, then plants will grow at a slower rate.

Background Background InformationInformation

What is Aspirin?

How to Find the Concentration of Aspirin

Best Environment

Tomato (Lycopersicon esculentum)

Design DiagramDesign DiagramTitle: The Effect of Aspirin Concentrated Water on the Growth of PlantsHypothesis: If an aspirin concentration of water is increased, then plants will grow at a slower rate.IV : Aspirin Concentration of Water

LevelsWater (0 g/L)

- control5 g/L 10 g/L 15 g/L

Trials 10 10 10 10

Design Diagram Design Diagram (cont.)(cont.)

DV: Height of Plants (cm)

CONSTANTS: type of soil, amount of soil, type of pots, water (tap), amount of water, type of plant, same environment, planting procedure, depth of seed, same type of aspirin

MaterialsMaterials Miracle Grow Soil

Tomato Plant Seeds

Water

40 100 mL pots

Cups

Aspirin

Ruler

Clock

Mortar

Pestle

Scale

Spoon

Graduated Cylinder (100 ML)

ProcedureProcedure1) Plant 40 pots of tomato plants.

2) Label 10 of the pots ‘control’ and label 10 of the pots for each IV (5 g/L, 10 g/L, 15 g/L)

3) For 10 of the pots, water daily with 20 mL of tap water (control).

4) Dissolve aspirin (5 g, 10 g, 15 g) in 1 liter of water.

Procedure (cont.)Procedure (cont.)

5) Water respectively with 20 mL of water.

6) Observe and record the growth of the plants for 4 weeks.

7) Record observations in a data table.

Safety CautionsSafety Cautions

Do Not Consume Any Materials Used in this Experiment!

Before the ExperimentBefore the Experiment

During the ExperimentDuring the Experiment

After the ExperimentAfter the Experiment

ResultsResultsTrials

Control (cm)

5 g/L (cm) 10 g/L (cm) 15 g/L (cm)

1 7.4 3.6 2 0

2 12.9 4.2 2.6 0

3 10.1 2.4 1.5 0

4 10.2 2.6 0.4 0

5 8.4 2.2 1.6 0

6 8.5 3.8 1.8 0

7 8.3 4.3 0.8 0.2

8 8 3.7 2.1 0

9 7.6 3.3 0.9 0

10 8.3 2.9 0.2 0.3

Average 8.97 3.3 1.39 0.05

Average CalculationsAverage Calculations Control : 7.4 + 12.9 + 10.1 + 10.2 + 8.4 +

8.5 + 8.3 + 8 + 7.6 + 8.3 = 89.7 / 10 = 8.97

5 g/L : 3.6 + 4.2 + 2.4 + 2.6 + 2.2 + 3.8 + 4.3 + 3.7 + 3.3 + 2.9 = 33 / 10 = 3.3

10 g/L : 2 + 2.6 + 1.5 + 0.4 + 1.6 + 1.8 + 0.8 + 2.1 + 0.9 + 0.2 = 14 / 10 = 1.39

15 g/L : 0 + 0 + 0 + 0 + 0 + 0 + 0.2 + 0 + 0 + 0.3 = .5 / 10 = .05

Results (cont.)Results (cont.)

Statistical Statistical Analysis(ANOVA)Analysis(ANOVA)Control : 7.4 + 12.9 + 10.1 + 10.2 + 8.4 +

8.5 + 8.3 + 8 + 7.6 + 8.3 = 89.7 / 10 = 9

5 g/L : 3.6 + 4.2 + 2.4 + 2.6 + 2.2 + 3.8 + 4.3 + 3.7 + 3.3 + 2.9 = 33 / 10 = 3.3

10 g/L : 2 + 2.6 + 1.5 + 0.4 + 1.6 + 1.8 + 0.8 + 2.1 + 0.9 + 0.2 = 14 / 10 = 1.4

15 g/L : 0 + 0 + 0 + 0 + 0 + 0 + 0.2 + 0 + 0 + 0.3 = .5 / 10 = .05

Control 5 g/L 10 g/L 15 g/L

Mean 8.97 cm 3.3 cm 1.39 cm 0.05 cm

Sample Size

10 10 10 10

Standard Deviation

1.665 0.744 0.785 0.108

# of groups

4 4 4 4

Statistical Analysis Statistical Analysis (cont.)(cont.)

5 g/L : 3.6 + 4.2 + 2.4 + 2.6 + 2.2 + 3.8 + 4.3 + 3.7 + 3.3 + 2.9 = 33 / 10 = 3.3

10 g/L : 2 + 2.6 + 1.5 + 0.4 + 1.6 + 1.8 + 0.8 + 2.1 + 0.9 + 0.2 = 14 / 10 = 1.4

15 g/L : 0 + 0 + 0 + 0 + 0 + 0 + 0.2 + 0 + 0 + 0.3 = .5 / 10 = .05

Source of Variation

Sum of Squares

Degrees of Freedom

Mean Square

F-test Statistic

Aspirin Concentration

SSTR = 462.94

3 MSTR = 154.31

FData = 160.74

Error SSE = 35.58

37 MSE = .96

Total SST = 498.52

Statistical Analysis Statistical Analysis (cont.)(cont.) Total Sample Size = 40

Avg of All plants = 3.428 cm

SSTR = 10(8.97 - 3.428)2 + 10(3.3 - 3.428)2 + 10(1.39 - 3.428)2 + 10(.05 - 3.428)2 = 462.94

SSE = 9(1.665)2 + 9(.744)2 + 9(.785)2 + 9(.108)2 = 35.58

SST = 462.94 + 35.58 = 498.52

MSTR = 462.94/3 = 154.31

MSE = 35.58/37 = .96

F-value = 154.31/.96 = 160.74

Critical Value = 2.79

ConclusionsConclusions

Results support hypothesis

Experiment shows significant results based on statistical analysis.

Types of ErrorsTypes of Errors

Initial Planting Procedure

Inconsistent Watering of Plants

Different Environments

ImprovementsImprovements

Keep all constants as “constant” as possible

More trials

Longer Experiment Time

Precise measurements

Extensions / Extensions / ApplicationsApplications Experiment with other common medicines.

Be aware of where I dispose of medicine.

Prevent others from making the same mistake.

Acknowledgements Acknowledgements

Mom and Dad

Mrs. Pietrangelo

Ms. Paine

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"Great Plant Escape - Growing Plants Indoors." University of Illinois Extension-Urban Programs Resource Network - University of Illinois at Urbana-Champaign. Web. 05 Oct. 2010.

Nordqvist, Christian. "What Is Aspirin? What Is Aspirin For?" Medical News Today: Health News. 20 Aug. 2009. Web. 05 Oct. 2010.

"Plant Structure and Function." University of Illinois at Chicago - UIC. Web. 05 Oct. 2010.