Assignment
26 Primary
Productivity Investigation – Data Analysis Refresher
Introduction
The purpose of the following task
is to help ensure that you feel confident and capable of thoroughly analyzing
and writing about the data that you obtained during last week’s experiment.
Assume that this work will be collected and graded.
Scenario
Fusarium
oxysporum is a
disease-causing organism of many crops, including asparagus. The fungus
penetrates the roots and spreads up through the plant, often reducing the flow
of water to the stem and leaves. Infected plants produce fewer and smaller
spears than healthy plants. The fungus stays in the soil year after year.
Salt (sodium chloride) treatment
is a common method for suppressing disease in plants. It was hypothesized that a dusting of salt added to the soil would
suppress the fungus and allow the asparagus plants to grow more and produce
more spears.
The table shows data collected
after six 10 foot by 10 foot asparagus field plots were treated with a dusting
of salt.
|
|
Average Number of Spears
|
Average Spear mass (g)
|
|
Before
treatment with salt
|
78.2
|
1843.2
|
|
After
treatment with salt
|
89.1
|
2266.1
|
Thoroughly analyze the data and
evaluate this hypothesis.
When “thoroughly analyzing data”…
1. Graph the
data
2. Make
inferences, identify patterns and trends
a. Always support your conclusions
by referring to the data
3. Evaluate
your hypothesis
a. Always support your conclusions
by referring to the data
4. Explain
your data.
a. Use class concepts to explain the
events that produced your data.
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