Hypothesis Worksheet - DOC - DOC by w0aNKlj2

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```									                                   Hypothesis Worksheet
Directions: Take the following inferences and turn them into formal hypotheses.

Formal Hypothesis Format:
If manipulated variable, then responding variable and prediction because what you already know (an explantion).

   Your hypothesis should:
o make sense to anyone who can read it
o be something that can be tested
o answer the Problem

Example: Increased sleep my cause higher grades.
Manipulated variable: amount of sleep                   Responding variable: grade percent average
Formal hypothesis: If the amount of sleep is increased then the grade percent average will increase because sleep
allows students to be alert and focused during class.

1. Chocolate may cause pimples
Manipulated variable: __________________________ Responding variable: _________________________
Formal hypothesis: _____________________________________________________________________
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2. Salt in soil may affect plant growth.
Manipulated variable: __________________________ Responding variable: _________________________
Formal hypothesis: _____________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________

3. Plant growth may be affected by the color of the light.
Manipulated variable: __________________________ Responding variable: _________________________
Formal hypothesis: _____________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________

4. Bacterial growth may be affected by temperature.
Manipulated variable: __________________________ Responding variable: _________________________
Formal hypothesis: _____________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________

5. Ultraviolet light may cause skin cancer.
Manipulated variable: __________________________ Responding variable: _________________________
Formal hypothesis: _____________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________

6. Temperature may cause leaves to change color.
Manipulated variable: __________________________ Responding variable: _________________________
Formal hypothesis: ______________________________________________________________________
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_____________________________________________________________________________________
Results/ Data Analysis
Directions: Using the data from the Celery Evaporation Lab write a formal data analysis.

   Look for patterns or trends in your data and make comparisons (no inferences, please).
   Represent the data in an appropriate chart or graph.
   Make sure your graph includes proper units, labels, titles, and plotted points when numerical data are
present.
   Include any necessary calculations along with:
o the steps of each type of calculation.
o all measurement units.

Step One: Create a graph or chart of your data. The manipulated variable must go on the x-axis and
the responding variable must go on the y-axis. The graph needs to have a title, axis labels with units,
and numbered axis’ that begin at zero and progress evenly to a reasonable value. Use a key to identify
differences in your graph and insure clarity.

Step Two: Write about your data. Do not repeat
your data table and do not make any inferences. We
are not answering our question or our hypothesis
yet. Simply explain any patterns in your data and
compare and contrast. You may want to compare or
contrast the controlled group with the experimental
group or the different amounts of water used. Try
to make this section 4-5 sentences.

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Conclusion/Discussion
Directions: Using the data from the Celery Evaporation Lab write a formal conclusion.

   Restate the Problem and Hypothesis.
   Evaluate your Hypothesis based on analysis of the data.
   Summarize the results of your investigation, using actual data.
   Answer the question using the data as evidence (make an inference as to possible causes of the outcome).
   Describe the possible human and instrument errors in the investigation.
   State how you could revise the design of the investigation to get more valid results.
   Give some ideas for further investigations.

Step One: Write the Problem and Hypothesis.

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Step Two: Summarize your data using numbers and evidence.

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Step Three: Explain whether you think your hypothesis was right or wrong. Back this up with data.

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Step Four: Answer the Question.

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Step Five: Explain any mistakes or possible errors during the experiment.

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Step Six: Write about a way that you could make this experiment better (less error, more data, clarify, expand).

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