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50 Cards in this Set
- Front
- Back
µ is the symbol for:
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population mean
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σ is the symbol for:
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population standard deviation
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s is the symbol for:
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sample standard deviation
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n is the symbol for:
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sample size
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N is the symbol for:
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population size
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x is the symbol for:
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data items
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Σ is the symbol for:
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summation
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The arithmetical middle of a data set is:
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mean
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The physical middle of an ordered data set is:
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median
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The most common element of a data set is:
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mode
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The 50th percentile is equal to what measure of center?
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median
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A summary measure computed from an entire population.
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Parameter
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A summary measure computed from a sample.
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Statistic
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A data set made up of all individuals of interest to the researcher.
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Population
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A data set made up of some of the individuals of interest to the researcher.
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Sample
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The measure of center that is most affected by an outlier is:
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Mean
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A data set made up of word answers (yes/no, red/yellow, etc.) is Qualitative or Quantitative?
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Qualitative
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A data set made up of numerical answers like zip codes, jersey numbers, etc. is Qualitative or Quantitative?
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Qualitative
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A data set made up of numerical measurements (heights, weights, costs, etc) is Qualitative or Quantitative?
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Quantitative
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Qualititative Data that has no meaningful order--cannot be arranged from smallest to largest, worst to best, etc. is Nominal, Ordinal, Interval, or Ratio Data?
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Nominal
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Qualitative Data that can be arranged from smallest to largest, worst to best, or some similar order that carries a meaning of progression is Nominal, Ordinal, Interval, or Ratio Data?
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Ordinal
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Quantitative Data that has no inherent zero--zero is a number on a scale; zero does not mean "none" is Nominal, Ordinal, Interval, or Ratio Data?
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Interval
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Quantitative Data that has an inherent zero--zero means "none". Additionally, twice a data value would actually mean twice as much is Nominal, Ordinal, Interval, or Ratio Data?
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Ratio
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What measure(s) of center can be found from a Pareto chart?
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Mode
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What graphical display shows only quantitative data?
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Histogram
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What graphical display shows the relationship of the parts to the whole?
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Pie chart
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What graphical display of columns would you use for Nominal Data that has no expected order?
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Pareto chart
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What graphical display of columns would you use for Ordinal Data or Nominal Data that has an expected order?
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Bar chart
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What graphical display show the progression of a variable over time?
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Time Series Chart
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What word describes a countable list of data that generally jumps from whole number to whole number, or can have a limited number of fractional possibilities?
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Discrete
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What word describes an infinite data set, where the members cannot possibly be listed because all values between whole numbers are possible?
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Continuous
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The sampling technique that gives each member of the population an equal chance of being chosen.
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Simple Random Sample
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The sampling technique that has choose a random starting place and then choose each nth member of the population.
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Systematic
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The sampling technique that has one divide the population into groups and then take random samples from each defined group.
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Stratified
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The sampling technique that has one divide the population into groups, randomly choose a small number of those defined groups, and survey every member of the chosen groups.
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Cluster
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Taking a sample from those who are accessible.
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Convenience
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The symbol for the sample proportion is:
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^
p |
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The symbol for the sample mean is:
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_
x |
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The symbol for the sample variance is:
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<sp>2
s |
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The symbol for the population variance is:
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2
σ |
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How do you find the range?
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Maximum data value minus the minimum data value
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How do you find the IQR?
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Third quartile value minus the first quartile value.
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Which measure of center is shown in a box-and-whisker plot?
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Median
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Given the standard deviation, how do you find the variance?
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Square the standard deviation
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The symbol for a linear regression line is:
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^
y |
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The symbol for the coefficient of determination is:
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2
r |
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p is the symbol for:
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population proportion
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α is the symbol for:
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level of significance
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E is the symbol for:
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error of the estimate
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r is the symbol for:
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correlation coefficient
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