The Distribution of Class Ranks in a Particular Introductory Statistics

question 15

Multiple Choice

The distribution of class ranks in a particular introductory statistics class is assumed to be 20% freshmen, 40% sophomores, 35% juniors, and 5% seniors.To see if this is valid, a sample of 20 sections of this introductory statistics class is taken, and the frequency of each class rank is recorded.There are 130 freshmen, 242 sophomores, 221 juniors, and 37 seniors.The test statistic for a χ2goodness-of-fit test would be:

• A) 1568.429.
• B) 1.4853.
• C) 0.1689.
• D) 7.8147.

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Definitions:

Extraversion

A personality trait characterized by outgoing, sociable, and energetic behavior.

Ability Traits

Characteristics that determine an individual's potential to perform tasks or acquire skills.

Factor Analysis

A statistical method used to describe variability among observed, correlated variables in terms of a potentially lower number of unobserved variables called factors.

Performance Projective Tests

Psychological assessments where individuals respond to ambiguous stimuli, revealing hidden emotions and internal conflicts.