Flashcards
Stats 1.1-1.4
Cards in this deck (22)
- 1PopulationAll of something, EX): Nursing students at TWU
- 2SampleSome of the all ( comes from population
) - 3StatisticAny measurement coming from a sample EX): Average
age from 500(sample size) TWU undergrads(sample) at
random is 20.3(statistic) - 4ParameterMeasurement from a population EX): Avg. age of 21.1
- 5Sample size symbolN
- 6Sample mean symbolX bar
- 7ProportionPart of a whole
- 8QuantitativeData that is in numbers EX): Height, weight
- 9QualitativeData in the form of words EX): Gender, hometown, zip
code - 10Discrete dataCountable data EX): 1,2,3,4,5....( counted 15 M&M's)
- 11Continuous dataAll values, including decimals EX): 1.1,1.2,1.3,1.4...
(weight is 156.7) - 12Simple randomRandom sampling
- 13Systematic samplea sample drawn by selecting individuals systematically
from a sampling frame EX): Every 3rd person - 14Stratified samplea sample drawn in such a way that known subgroups
within a population are represented in proportion to their
numbers in the general population, EX): 50 from each
group of freshman, sophomores, etc. - 15cluster sampleIs obtained by selecting some individuals within a randomly selected collection or group of individuals. EX): Random
from juniors and seniors - 16Convenience sampleSamples in the easiest way to collect data
- 17BiasThe results of the sample aren't representative of the
population - 18Sampling biasTechnique used to obtain individuals to be in the sample
tend to favor one part of the population over the other. EX):
Convenience sampling or Undercoverage( the proportion
of one segment of the population is lower in the sample
than it is in the population - 19nonresponse biasIndividuals selected to be in the sample who don't respond
to a survey have different opinions from those who do - 20Response biasAnswers on survey do not reflect the true feelings of
the respondent. EX): Misrepresented responses, loaded
questions, interviewer error, data-entry error - 21non-sampling errorErrors that result from undercoverage, nonresponse bias,
response bias, or data-entry error. - 22Sampling errorerrors that result from using a sample to estimate information about a population. This type of error occurs because
a sample gives incomplete information about a population.
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- Flashcards on Stats 1.1-1.4, created by Ca'savier Davis on 07/09/2022.
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- Ca'savier Davis
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