PSY 292 Test 1 Study Guide exam |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
with correct answers |||\\\ |||\\\
descriptive statistics - correct answer✔✔summarize/organize a group of numbers from a
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research study |||\\\
inferential statistics - correct answer✔✔test hypotheses |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
value - correct answer✔✔number or category that a score can have
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score - correct answer✔✔particular person's value on a variable
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variable - correct answer✔✔characteristic that can have different values
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frequency distribution - correct answer✔✔shows frequences over a list of all values and
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number of scores of each value |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
percentile - correct answer✔✔percent of scores less than a specific value (go over to the CP
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and down one)
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percentile point - correct answer✔✔value of given percentile (over to values up one)
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mean - correct answer✔✔arithmetic average of a group of scores
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mode - correct answer✔✔value with the greatest frequency in a distribution
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, median - correct answer✔✔middle score when all the scores in a distribution are arranged
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from lowest to highest |||\\\ |||\\\ |||\\\
range - correct answer✔✔maximum value minus the minimum value
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interquartile range - correct answer✔✔75th percentile minus the 25th percentile |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
variance - correct answer✔✔measure of how spread out a set of scores are; average of the |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
squared deviations from the mean; standard deviation squared |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
SD2 = Σ(X-M)2 /N |||\\\ |||\\\ |||\\\
standard deviation - correct answer✔✔the positive square root of the variance |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Z score - correct answer✔✔number of standard deviations a score is above or below the mean
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of the scores in a distribution.
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Z= X-M / SD |||\\\ |||\\\ |||\\\
population - correct answer✔✔entire set of things of interest |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
sample - correct answer✔✔the subset of a population - scores of the particular group of
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people studied.. part of the population you've collected data from. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
random selection - correct answer✔✔method of choosing a sample in which each indiidual in
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the population has an equal chance of being selected.
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haphazard selection - correct answer✔✔method of selecting a sample of individuals to study |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
by taking whoever is available or happens to be first on a list
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- can result in a sample that is not representative of the population.
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with correct answers |||\\\ |||\\\
descriptive statistics - correct answer✔✔summarize/organize a group of numbers from a
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
research study |||\\\
inferential statistics - correct answer✔✔test hypotheses |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
value - correct answer✔✔number or category that a score can have
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
score - correct answer✔✔particular person's value on a variable
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
variable - correct answer✔✔characteristic that can have different values
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
frequency distribution - correct answer✔✔shows frequences over a list of all values and
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
number of scores of each value |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
percentile - correct answer✔✔percent of scores less than a specific value (go over to the CP
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
and down one)
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percentile point - correct answer✔✔value of given percentile (over to values up one)
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mean - correct answer✔✔arithmetic average of a group of scores
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
mode - correct answer✔✔value with the greatest frequency in a distribution
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
, median - correct answer✔✔middle score when all the scores in a distribution are arranged
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
from lowest to highest |||\\\ |||\\\ |||\\\
range - correct answer✔✔maximum value minus the minimum value
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interquartile range - correct answer✔✔75th percentile minus the 25th percentile |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
variance - correct answer✔✔measure of how spread out a set of scores are; average of the |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
squared deviations from the mean; standard deviation squared |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
SD2 = Σ(X-M)2 /N |||\\\ |||\\\ |||\\\
standard deviation - correct answer✔✔the positive square root of the variance |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Z score - correct answer✔✔number of standard deviations a score is above or below the mean
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
of the scores in a distribution.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Z= X-M / SD |||\\\ |||\\\ |||\\\
population - correct answer✔✔entire set of things of interest |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
sample - correct answer✔✔the subset of a population - scores of the particular group of
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
people studied.. part of the population you've collected data from. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
random selection - correct answer✔✔method of choosing a sample in which each indiidual in
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
the population has an equal chance of being selected.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
haphazard selection - correct answer✔✔method of selecting a sample of individuals to study |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
by taking whoever is available or happens to be first on a list
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
- can result in a sample that is not representative of the population.
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