Consider a Data Sample Consisting of 12 Values with a Mean

question 26

Multiple Choice

Consider a data sample consisting of 12 values with a mean of 22 and variance of 1.5. What is the approximate 95% confidence interval for the standard deviation?

• A) 0.75 < σ < 4.32
• B) 0.87 < σ < 2.08
• C) 1.02 < σ < 2.87
• D) 1.03 < σ < 8.26

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Definitions:

Reliability Estimates

Measures that assess the consistency of a test or measurement tool across different situations and over time.

Cronbach's Alpha Coefficients

A statistic used to measure the reliability or internal consistency of a set of test or survey items.

Methods Section

A part of a research paper or report that describes the procedures and techniques used in the study to collect, process, and analyze data.

Reliability Coefficient

A statistical measure that indicates the consistency or repeatability of measurements.