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Statistical Reasoning
Statistical Reasoning
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Module 8 Review
Flashcards
24 cards
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Practice quiz
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Questions
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Answers
1
Which is not a measure of central tendancy?
Standard Deviation
Mean
Median
Mode
2
Bonus! Which of these psychologists are associated with behaviorism?
Martin Seligman
Mary Whiton Calkins
Ivan Pavlov
Wilhelm Wundt
3
Looking at the graph for IQ, what percentage score between 70 and 130? Refer to the Normal Distribution on the board
68%
95.4%
13.6%
27.2%
4
What statistical measure is the average of the distribution of data?
Mean
Median
Mad
Mode
5
Descriptive statistics________while inferential statistics ________
Indicate the significance of the data; summarize the data
Describe data from experiments; describe data from surveys and case studies
are measures of central tendance; are measures of variance
summarize data; assess if data can be generalized
6
Bonus! What is the statistical measure use for the data below?
P-value
Mode
Correlation Coefficient (r)
Random sampling
7
In a normal distribution, what percentage of the scores in the distribution falls within one standard deviation?
40%
68%
95%
34%
8
What type of skew is this?
uhhhh
Negative
Positive
No skew (normal)
9
What is a limitation of mean?
not based on all values
Sensitive to extreme values/outliers
not defined when there are no repeats in a data set
does not take into account the precise value of each observation
10
The difference between the lowest and highest scores in a distribution is
Standard deviation
Median
range
mean
11
How do you find the mode?
find the most frequently occuring score(s) in a distribution
Find the middle score in a distribution
Average all the scores
Find the sum of all the scores
12
What is the middle score in a distribution called?
Negative skew
Median
Mode
Mean
13
What is the range of the following: 12, 25, 33, 40, 80?
33
68
98
100
14
Which of these is
not
one of the rules in deciding when it is safe to generalize from a sample?
Representative samples are better than biased samples
Less-variable observ. are more reliable than those that are more variable
More cases are better than fewer
The rarer the case is, the more revealing it is about the general public
15
What measures the liklihood that a result could have happened by chance
Representative sample
Statistical Significance
Mean
Standard Deviation
16
Which measure of central tendancy is most influened by outliers?
Histogram
Mode
Median
Mean
17
Numerical data that allows one to generalize--to infer from sample data the probability of something being true in a pop
Descriptive statistics
Inferential statistics
Statistical significance
Normal curve
18
What is a bar graph called?
histogram
bar graph
pie chart
scatterplot
19
What do we call a single score that represents a whole set of score?
Standard Deviation
measure of central tendancy
Range
Descriptive statistics
20
What does P-value stand for?
The difference in range of data
The variation within the scores
The average of the scores
The statistical significance
21
What defintion fits best with standard deviation?
the difference between the highest and lowest scores in a distribution
the scores only deviate a little from the middle number
the average of all the scores in a distribution
a computed measure of how much scores vary around the mean score
22
Bonus! The video on the conjoined twins was an example of...
Case reviews
Naturalistic observations
Correlation
Case studies
23
A researcher calculates statistical significance for her study & finds a 5 percent chance that results are due to chance
That is not statistically significant
This is highly statistically significant
That is the minimum result typically considered statistically significant
Chance or coincidence is unrelated to statistical significance
24
Match the term: Numerical data used to measure & describe characteristics of a group
Statistics
Mean
Central Tendancy
Descriptive Statistics
