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0.3 Statistics Flashcards | StudBud
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0.3 Statistics
0.3 Statistics
20 terms
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Correlations, Statistics, and Research Ethics
Flashcards
20 cards
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Questions
20
Answers
1
Which statistical measure allows me to make predictions?
mean
correlation coefficient
standard deviation
range
2
If you scored in the 80th percentile on a standardized test, that means you...
did better than 20% of the other test takers
answered 80% of the questions correctly.
answered 20% of the questions correctly.
did better than 80% of the other test takers
3
What correlation is best depicted in the scatterplot below?
.7
-.2
0
-.95
4
Which of the following coefficients represents the strongest correlation?
-.96
.5
0.00
.76
5
If I wanted to show causation, I need to use
an experiment
the range
a correlational study
a case study
6
If a result of a study is said to be
STATISTICALLY SIGNIFICANT
, what does this mean?
Result is not likely to have occurred by random chance.
The standard deviation is large.
The IV had no effect on the DV
Result likely occurred by random chance.
7
When researchers combine the results of similar studies, they are performing ...
a meta-analysis
percentile ranking
replication study
peer review
8
Which statistical measure is impacted the most by outliers?
Mode
Frequency
Median
Mean
9
Correlation proves causation.
true
FALSE
10
How would you describe this correlation?
strong negative correlation
moderate negative correlation
strong positive correlation
moderate positive correlation
11
The difference between the highest and lowest scores in a distribution…
Median
Mean
Mode
Range
12
If I wanted to visually represent a correlation between two variables I would create a...
pie chart
scatterplot
bar graph
standard deviation chart
13
If I have to use deception in my study, I need to make sure that I use a ...
confidentiality release form
reward to give to the subjects
debriefing
psychiatrist to talk to the subjects
14
What does it mean if your golf scores have a small standard deviation?
Most of your scores fall well above the average.
Your scores are really good.
Your scores tend to be similar to each other.
Your scores are very inconsistent.
15
What is the mode of this data: 2, 3, 8, 5, 4, 3, 9, 8, 3, 1
4
8
3
5
16
If I include you all in a study without telling you, I am violating this ethical rule.
failure to use debriefing
improper use of deception
protection of privacy
informed consent
17
What does effect size tell me that statistical significance cannot?
if confounding variables impacted the study
a profound difference exists b/w experimental & control grps
if the result occurred by random chance
magnitude, or degree of impact of IV
18
What is the range of the correlation coefficient?
-1 to 1
0 to 100
0 to 1
0 to -1
19
What type of distribution is shown in this graph?
Oblong skewed
Normal distribution
Positively skewed
Negatively skewed
20
What is the median of this data: 5, 27, 45, 73, 76, 77, 82, 99, 99
99
77
27
76
