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Totten - Variables, Observations, Inferences
Test Description: Distinguish between Independent and Dependent Variables, controls and different types of observations.
Instructions: Answer all questions to get your test result.
1) In an experiment, the one variable that you change to see if it CAUSES something to happen.
A
Dependent Variable
B
Independent Variable
C
Observation
D
Control
2) In an Experiment, the variables you keep the SAME for all groups.
A
Inferences
B
Control Variables
C
Dependent variables
D
Independent variables
3) In an experiment, what you MEASURE to see if there was an EFFECT
A
Independent Variable
B
Control Variable
C
Dependent Variable
D
Observation
4) What is the Independent variable in this hypothesis? IF students go to bed by 9 PM, THEN their test scores will increase.
A
# of students
B
9 PM bedtime
C
test scores
5) What is the independent variable in this hypothesis? IF teachers give homework time in class, THEN the # of completed assignments will increase.
A
# of completed assignments
B
homework time given in class
C
# of teachers
6) What is the DEPENDENT VARIABLE? IF students say GOOD MORNING to teachers, THEN the # of times teachers smile will increase.
A
students saying Good Morning
B
# of students
C
# of teacher smiles
7) Which variable is a control? In an experiment, Mrs. Totten wanted to see if giving students a peppermint before class would increase the # of minutes students focused in class. She gave 20 students the same kind of mint.
A
giving the mint
B
# of minutes spent focusing
C
used the SAME kind of mint for all students
8) Which is a good INFERENCE for these observations? You see marching bands, fire trucks, kids in a group doing cartwheels down the main street of town.
A
You are at a parade.
B
You are at school.
C
You are at the doctor's office.
9) A possible explanation for a set of observations or answer to a scientific question.
A
Hypothesis
B
Variable
C
Observation
10) A factor that can change in an experiment.
A
Inference
B
qualitative
C
Variable
D
Control
11) facts, figures, and other evidence gathered through observations
A
variables
B
inferences
C
data
D
observations
*select an answer for all questions
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