Scientific Method (6)

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Statistics

Hypothesis Testing: Proportions & Means

6th

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17 Terms

1
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What is a hypothesis?
A special kind of prediction that forecasts how one variable affects a second variable
2
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Why are observations important?
They are important because they help describe what is happening, and they also help record and collect data
3
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What is a qualitative observation?
An observation you make using your senses
4
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What is a quantitative observation?
An observation you make using numbers (measuring)
5
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What is the difference between an observation and an inference?
An observation is information collected using your sense, while an inference is deduction based off of your observations
6
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What is a variable?
A factor in an experiment that may change
7
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What are 3 variables in an experiment?
Dependent Variable; Independent Variable; Controlled Variable
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What is the tested variable called?
Dependent Variable
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What is the variable that is purposely changed called?
Independent Variable
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What is the variable in an experiment that must stay the same throughout called?
Controlled Variable
11
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What are the basic components of a graph?
Title; Axis; Labels; Key; Scale
12
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What does the prefix kilo mean?
1,000
13
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What does the prefix hecto mean?
100
14
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What does the prefix deca mean?
10
15
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What does the prefix deci mean?
0.1
1/10
16
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What does the prefix centi mean?
0.01
1/100
17
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What does the prefix milli mean?
0.001
1/1,000