Statisticians Like Precision in Their Interval Estimates

question 67

Multiple Choice

Statisticians like precision in their interval estimates. A low margin of error is needed to achieve this. Which of the following supports this when selecting sample sizes?

• A) A larger sample size reduces the margin of error.
• B) A smaller sample size reduces the margin of error.
• C) A larger sample size increases the margin of error.
• D) A sample size has no impact on the margin of error.

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Definitions:

MLU

Mean Length of Utterance, a measure used in the study of child language acquisition indicating the average length of a child's spoken statements.

Overextension

In language acquisition, the use by children of a word in a broader context than is appropriate, indicating the developmental process of understanding linguistic categories.

Overextension

The application of a specific word to a broader range of objects or situations than is appropriate, common in early language acquisition.

Expressive Vocabulary

The set of words a person can use in speaking or writing, reflecting their active language ability.