Show:
Variables
Data
Hypothesis
Graphs
SURPRISE
100
What is the independent (or manipulated) variable?
the variable that is changed
100
What is quantitative data?
Data that can be measured...an amount or QUANTITIY.
100
What is an alternative hypothesis to "Exposure combination of drought stress and light stress does not affect plant morphology or pigmentation"
"Exposure combination of drought stress and light stress does affect plant morphology or pigmentation"
100
What does a line graph show?
a relationship between two actions/variables
100
What do you do if your hypothesis is refuted?
Ask another question and investigate again.
200
What is the dependent (responding) variable?
The variable that responds to the change
200
What is qualitative data?
Data that describes the characteristic (or QUALITY) of something.
200
How is a theory different from a hypothesis?
A theory is a well supported broad range idea and a hypothesis is testable for a specific scenario.
200
When is a bar graph used?
to show a comparison among different categories
200
Where did Dr. Caulfield go to graduate school?
Northwestern University
300
What is the controlled variables?
the variables that are held constant between the two test groups.
300
What do scientists use to shape their research questions and design?
Field- specific literature
300
What is a null hypothesis?
a statement that shows not relationship between the independent and dependent variables
300
How is the scale determined for the graph?
highest value needed/number of spaces available
300
How many replicates of each treatment will be have in our class?
12
400
What are the two test groups in a controlled experiment?
control group and an experimental group
400
What statistical test is appropriate for comparing 3 or more treatment groups?
Analysis of Variance (ANOVA)
400
Form a hypothesis for the following statement- Echinacea has an effect on the duration of a cold.
If Echinacea is related to lowering the duration of a cold, then an increase in Echinacea will decrease the duration of a cold since Echinacea supports the immune system.
400
What MUST be present on all graphs?
title, units, labels, equal scale for each axis, key (legend)
400
What year was Calvin founded?
1876
500
Identify the variables that would test the following scenario: Mrs. Zukowski noticed that when she puts olive oil on her hands she does not get dry skin in the winter. What would be the controlled variable(s) for your experiment?
Olive oil = I.V. Dry Skin= D.V. Controlled variables= same temperature, same amount of washing, same exposure to the wind.
500
Write a hypothesis for the following data describing plant height in centimeters Red light Green light Blue light White light 2 1.4 1.8 1.8
If light color is related to plant growth, then red light will increase the growth the most since plants can best absorb red wavelengths of light.
500
Create a null hypothesis for the following relationship: water is related to plant growth
If water is not related to plant growth, then increasing the amount of water will not effect plant growth because water is not needed as a resource for plants.
500
What is the appropriate statistical test comparing two experimental groups?
T-test
500
What topic did Dr. Dornbos study as a graduate student?
Influence of stress during soybean seed fill on seed weight, germination, and seedling growth rate