Hypotheses: How are They Written? Plant growth may be affected by the color of the light....

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Transcript of Hypotheses: How are They Written? Plant growth may be affected by the color of the light....

Page 1: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.
Page 2: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.
Page 3: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.
Page 4: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.
Page 5: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.
Page 6: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.
Page 7: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.
Page 8: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.
Page 9: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

Hypotheses:How areTheyWritten?

Page 10: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

Plant growth may be affected by the color

of the light.

Hypothesis

Page 11: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

Trees will change color when it gets cold.

Hypothesis

Page 12: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

If I play the lottery, then I will get rich.

Hypothesis

Page 13: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

Ultraviolet light causes skin cancer.

Hypothesis

Page 14: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

Temperature may cause leaves to change color.

or

If leaf color change is related to temperature , then exposing plants to varied temperatures will result in

changes in leaf color.

Hypothesis

Page 15: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

Ultra violet light may cause skin cancer.

or

If skin cancer is related to ultraviolet light , then people with a high exposure to UV light will have a higher frequency

of skin cancer.

Hypothesis

Page 16: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

Hypotheses:How areTheyWritten?And theAnswers are….

Page 17: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

Plant growth may be affected by the color

of the light.

Hypothesis

Hypothesis

Page 18: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

Trees will change color when it gets cold.

Not hypothesis

Hypothesis

Page 19: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

If I play the lottery, then I will get rich.

Not hypothesis

Hypothesis

Page 20: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

Ultraviolet light causes skin cancer.

Not hypothesis

Hypothesis

Page 21: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

Temperature may cause leaves to change color.

or

If leaf color change is related to temperature , then exposing plants to varied temperatures will result in

changes in leaf color.

Hypothesis

Page 22: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

Ultra violet light may cause skin cancer.

or

If skin cancer is related to ultraviolet light , then people with a high exposure to UV light will have a higher frequency

of skin cancer.

Hypothesis

Page 23: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

If skin cancer is related to ultraviolet light, then people with a high

exposure to UV light will have a higher frequency of skin cancer.

If leaf color change is related to temperature, then exposing plants to

low temperatures will result in changes in leaf color.

Hypothesis

Page 24: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

Notice that these statements contain the words, if and then. They are necessary in a formalized hypothesis.

Ifskin cancer is

related to ultraviolet light,

then people with a

high exposure to UV light will have

a higher frequency of skin

cancer.

Hypothesis

Page 25: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

Formalized hypotheses contain two variables. One is "independent" and the other is "dependent." The independent variable is the one you, the "scientist" control and the dependent variable is the one that you observe and/or measure the results.

If leaf color change is related to

temperature, then exposing

plants to low temperatures

will result in changes in leaf color.

Page 26: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

Rewrite the hypotheses using the formalized. Single underline the dependent

variable and double underline the independent. When you are done, write

one more original hypothesis of your own using this form.

Hypothesis

Page 27: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

 1. Salt in soil may affect plant growth.

2. Plant growth may be affected by the color of the light.

3. Bacterial growth may be affected by temperature.

Hypothesis

Page 28: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

The ultimate value of a formalized hypothesis is…

Hypothesis

Page 29: Hypotheses: How are They Written? Plant growth may be affected by the color of the light. Hypothesis.

…it forces us to think about what results we should look

for in an experiment.

Hypothesis


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Learning Outcomes Identify the types of hypotheses Identify Characteristics of a good hypothesis Identify the types of hypotheses Formulate a valid hypothesis.

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13. hypothesis testing - courses.cs.washington.edu€¦ · 13. hypothesis testing CSE 312, Winter 2011, W.L.Ruzzo 1. competing hypotheses 2. competing hypotheses 3. competing hypotheses

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