Sampling
Measures
Of Central
Tendency
Symbols
Probability
Random
Stuff
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Sampling - $200
This type of sampling uses
results or data that are
conveniently and readily
obtained.
What is convenience sampling?
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Sampling - $400
This type of sampling is when
the population is divided into
groups and a sample is drawn
from each group.
What is stratified sampling?
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Sampling - $600
This type of sampling is when the
population is divided into groups
and some of the groups are
randomly selected to be part of the
sample.
What is cluster sampling?
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Sampling - $800
This type of sampling is when a
starting point is selected at
random and every kth element
after is selected for the sample.
What is systematic sampling?
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Sampling - $1000
This type of sampling is when
every member of the population
has an equal change of being
included in the sample.
What is a random sample?
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Symbols - $200
x
What is a x bar - the sample mean?
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Symbols - $400
µ
What is mu - the population mean?
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Symbols - $600

2
What is sigma squared –
population variance?
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Symbols - $800
s
What is the sample standard
deviation?
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Symbols - $1000
∑
What is sigma - summation?
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Probability - $200
A counting technique used to
find the number of ways
objects can be arranged.
What is a permuation?
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Probability - $400
A counting technique used
to find the number of ways
objects can be placed into
groups.
What is a combination?
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Probability - $600
When the occurrence of one event
does not change the probability of
another event happening.
What are independent events.
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Probability - $800
When two events cannot
occur together.
What are mutually exclusive events?
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Probability - $1000
An event expressed in terms
of or in combination with
other events.
What is a compound event?
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Measures of Central
Tendency - $200
The measure of central tendency
which occurs the most frequently
in a set of data.
What is the mode?
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Measures of Central
Tendency - $400
The most resistant measure of
central tendency.
What is the median?
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Measures of Central
Tendency - $600
The least resistant measure
of central tendency.
What is the mean?
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Measures of Central
Tendency - $800
This measure of central tendency
does not exist in some sets of data;
it may also have more than 1 value
in some sets of data.
What is the mode?
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Measures of Central
Tendency - $1000
In a distribution which is skewed
to the right, this measure of
central tendency will have the
highest value.
What is the mean?
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Random Stuff - $200
This is the approximate
percentage of data will lie
within 1 standard deviation of
the mean.
What is 68%?
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Random Stuff - $400
The graph created from a
frequency distribution.
What is a histogram?
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Random Stuff - $600
This is found by dividing
each frequency by the total
number of frequencies in a
frequency distribution.
What is the relative frequency?
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Random Stuff - $800
A variable that can only be
represented by a finite or
countable number of values.
What is a discrete random variable?
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Random Stuff - $1000
This is the same as the
expected value of a discrete
probability distribution.
What is the mean?
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