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Statistics Review: Statistical studies and types Flashcards | StudBud
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Statistics Review: Statistical studies and types
Statistics Review: Statistical studies and types
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Answers
1
Observational Study or Experiment?
Experiment
Observational Study
2
A defining characteristic of an experimental study is
Treatment group
Double blind protocol
Control Group
Random assignment
3
Race has no corrleation to Reproductive Health or Justice
False
True
4
Positive Corrleation is when...
Working more hours leading to worsening grades
One behavior goes up, another goes down
One behavior goes up, so does the other
Being involved in extracurriculars leads to higher grades
5
A CORRLEATION betwen two variables means they tend to
have no common attributes
vary seperately
go in opposite directions all the time
vary together
6
What is inferential statistics?
Sample data being used to draw conclusions about a Sample
Sample data being interpreted for a histogram
Sample data being used to draw conclusions about a Population
Sample data being used to fill a survey
7
State if the scenario involves a permutation or a combination.
Permutation
Combination
8
Identify this Function
y=x^2
y = x^3
y = x^6
y = x
9
Identify this Function
y=x
y = ln x
y= 1/x
y=x2
10
Identify this Function
y = x^2
y = 1/x
y = 1/x^2
y = 1/x^3
11
Descriptive statistics is...
Interpreting data and drawing conclusions
Organizing and summarizing data
12
the corrleation of the graph is positive
False
True
13
What is inferential statistics?
When we analyse data from our findings
When we summarise findings from the population
When we select a probability sample
When we generalise findings from sample to population
14
Possible security code combinations on an alarm system? Combination/Permutation/Neither
Combination
Permutation
Neither
15
Identify this function.
Quadratic
Logarithmic
Exponential
Square Root
16
Find the Median of the numbers below.
4 and 5
10
6
5
17
2 types of statistics
Descriptive and Categorical
Qualitative and Quantitative
Descriptive and Inferential
Quantitative and Categorical
18
Which R
2
value is considered a significant corrleation?
1
0
0.05
500
19
Probability is between...
0 and 10
0 and 5
0 and 1
-1 and 1
20
There are two types of statistics: Descriptive and Differential
False
True
21
Probability come form French philosophers who were gamblers
False
True
22
Observation results often include descriptive statistics.
False
True
23
Identify this Function
y = x^2
Square root function
y = 1/x^2
y = x^1/2
24
Find the mode: 69, 58, 66, 37, 76, 20, 87
37
66
87
none
25
Correlation vs Causation?
No Idea!
Causation DOES NOT equal Correlation
Causation means the same thing as Correlation
Causation implies Correlation
