Using the Data Set Regarding the Stress Levels of Domestic

question 104

Multiple Choice

Using the data set regarding the stress levels of domestic workers with green cards, Cali has calculated the standard deviation of their housing expenses in two ways, with and without the workers who have zero housing expense. When Cali includes all workers, the standard deviation is

• A) smaller.
• B) larger.
• C) the same.
• D) scattered.

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Definitions:

Central Limit Theorem

A statistical theory that states that given a sufficiently large sample size from a population with a finite level of variance, the mean of all samples from the same population will be approximately equal to the mean of the population.

Sampling Distribution

The distribution of a statistic (like the mean) that would result from taking a large number of samples from a population.

Sample Size

The number of observations or data points in a sample used to estimate characteristics of a population.

Population Standard Deviation

A measure that quantifies the amount of variation or dispersion of a set of values in a population.