Ch 1: Practice
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A survey to collect data on the entire population is a __________.
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census
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In a questionnaire, respondents are asked to mark their gender as male or female. The scale of measurement for Gender is the __________ scale.
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nominal
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The scale of measurement that is used to rank the order of the observations for a variable is called:
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ordinal
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The ordinal scale of measurement has the properties of:
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nominal
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Temperature is an example of a variable that uses the _________ scale of measurement.
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interval
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Arithmetic operations are inappropriate for the _____________ scales of measurement.
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nominal, ordinal
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Data obtained from a nominal scale can be either:
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numeric or non numeric
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Arithmetic operations are appropriate for the __________ scales of measurement.
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interval, ratio
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Data can be either:
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numeric or non numeric
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Quantitative data are always _________.
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numeric
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The number of cases will always be the same as the number of _______ or _________.
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elements, observations
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Qualitative data are labels used to identify _____________ or __________ of the data.
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attributes, characteristics
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Social security numbers consist of numeric values. Therefore, social security is an example of:
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nominal
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For ease of data entry into a university database, 1 denotes that the student is an undergraduate and 2 indicates that the student is a graduate student. In this case data are _____________ and uses the _________ scale of measurement.
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categorical, ordinal
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Income is an example of ___________ data that uses the __________ scale of measurement.
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quantitative, ratio
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Define the 4 types of data sets.
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cross-sectional, time series, pooled cross-sectional, panel data
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Statistical inference is the process of drawing conclusions about the __________ from a ________.
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population, sample
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A portion of the population selected to represent the population is called a __________.
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sample
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Since a sample is a subset of the population, the sample mean is always __________ than the population mean.
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none of these
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In a data set, the number of elements will always be the same as the number of ____________.
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cases or observations
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Name the four scales of measurement.
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nominal, ordinal, interval, ratio
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Name the scale of measurement for each of the following variables: gender, social security number, temperature, income.
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nominal, nominal, interval, ratio
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The height of a building, measured in feet, is an example of a variable that uses the ________ scale of measurement.
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ratio
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Census refers to data collected for:
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the entire population
