16 Questions
What is the branch of statistics that involves generalizing from a sample to the population and assessing the reliability of such generalizations?
Inferential statistics
What is the definition of statistics?
Branch of science dealing with collection and interpretation of data
Which field does the text mention as an example of the application of statistics?
Public choices/responses
What is the main purpose of descriptive statistics?
To summarize and describe data
What is the key difference between categorical and numerical data?
Categorical data consists of categorical responses, while numerical data is expressed as numbers.
What distinguishes discrete data from continuous data?
Discrete data has possible values that correspond to isolated points on the number line, while continuous data has possible values that correspond to all points inside an interval on the number line.
What does univariate data refer to?
Data set that consists of observations on a single variable.
Why is measurement important in statistics?
Measurement determines the appropriate statistical method/s for analyzing a data set.
What technique ensures that the experiment does not systematically favor one experimental condition over another?
Random assignment
Which technique involves using extraneous variables to create groups (blocks) that are similar?
Blocking
Which technique involves holding extraneous variables constant so that their effects are not confounded with those of the experimental conditions?
Direct control
Which technique ensures that there is an adequate number of observations for each experimental condition magnitude?
Replication
What is the difference between uncertainty and variability?
Uncertainty occurs when the true value of a quantity at a single instance is unknown, while variability occurs when the quantity is measured at multiple instances with considerable differences.
Why might assumptions need to be made in the understanding of physical phenomena?
To simplify the understanding of reality
What is an example of epistemic uncertainty mentioned in the text?
Measurement of beam deflections
Why is a careful plan needed for collecting new data according to the text?
To understand and address any resulting limitations fully
This quiz covers the classification of data as either categorical (qualitative) or numerical (quantitative), with further classification of numerical data into discrete and continuous. Test your understanding of different types of data and their classifications.
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