Which of the Following Is Not a Procedure to Check

question 33

Multiple Choice

Which of the following is not a procedure to check the quality of clustering results?

• A)Perform cluster analysis on the same data using different distance measures.Compare the results across measures to determine the stability of the solutions.
• B)Delete variables randomly.Perform clustering based on the reduced set of variables.Compare the results with those obtained by clustering based on the entire set of variables.
• C)Use the same method of clustering and compare the results.
• D)Split the data randomly into halves.Perform clustering separately on each half.Compare cluster centroids across the two subsamples.

Interpret the results and implications of hypothesis tests in context, including understanding Type I and II errors.

Construct and interpret confidence intervals for population means and proportions, including understanding how sample size and confidence levels affect the width of confidence intervals.

Understand the conditions under which different types of tests (z-tests, t-tests) are appropriate.

Analyze the assumptions underlying tests for differences between two means, including independence of samples and normality.

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Definitions:

Pilot Project

An initial small-scale implementation that is used to test the feasibility, duration, cost, risk, and adverse effects of a project or innovation.

Scientific Inquiry

The process of exploring the natural world through observation, experimentation, and data analysis to answer questions.

Comparative Reasoning

A method of thinking where different objects, ideas, or situations are examined in relation to each other to identify similarities and differences.

Ideological Reasoning

Making conclusions or judgments based on a set of beliefs or ideologies.