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QM Final Exam Preparation
QM Final Exam Preparation
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Flashcards
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Questions
18
Answers
1
If
P
stands for "probability" and
p
stands for "population proportion", what does this stand for?
Population parameter
P-value
Sample proportion
Sample probability
2
Which measure of the center is best used for
QUALITATIVE
data?
The mean
The median
The mode
The medium
3
A pie chart easily illustrates the relative frequency of
QUALITATIVE
data.
True
False
4
The higher the sample size, the more representative the sample statistics are of the population statistics.
True
False
5
The PEARSON correlation coefficient can only be used to analyze
QUANTITATIVE
data.
True
False
6
A
probability
is always in-between -1 and 1.
False
True
7
A strong correlation coefficient demonstrates that there is always a strong
causation
(cause and effect).
False
True
8
In a normal distribution, about 68% of the values fall within:
1 z-score away from the mean
1 margin of error away from the mean
1 standard deviation away from the mean
1 correlation away from the mean
9
A histogram can be used to present the relative frequency for
QUALITATIVE
data.
False
True
10
The standard deviation is a measure of:
The center
The spread
The range
The outliers
11
Which method uses
probabilistic
sampling
Snowball sampling
Convenience sampling
Purposive sampling
Cluster sampling
12
The "Z-Score" informs you of:
The proportion of a data point's two-tailed hypothesis test
The percentile of a selected data point
How many standard deviations below or above the mean is a data point
How many chi-squares a data point is located from the Pearson Coefficient
13
You can use a scatterplot to illustrate a correlation between
age
and
salary
.
False
True
14
A box-plot represents the minimum, first quartile, ______, third quartile, and maximum.
medium
mean
median
mode
15
When analyzing the effects of drug consumption on academic results,
ACADEMIC RESULTS
are...
The dependent variable
The independent variable
16
Can there be a significant correlation between these two variables even though the line is not straight?
No
Yes
17
The following represents a left-tailed distribution
False
True
18
The result of a likert scale, ranging from 1 to 5, is considered
DISCRETE QUANTIATIVE
data.
False
True
