What Are the Primary Differences Between a Data Warehouse and a Data

question 69

Multiple Choice

What are the primary differences between a data warehouse and a data mart?

• A)Data warehouses make quick decisions, data marts make slow decisions
• B)Data warehouses tackle ethical issues, data marts tackle hypothetical issues
• C)Data warehouses have a more organisation-wide focus, data marts have functional focus
• D)Data warehouses have a physical focus, data marts have logical focus

Understand the concept of sampling distributions including the F distribution and chi-square distribution in the context of hypothesis testing.

Formulate null and alternative hypotheses for testing population variance.

Calculate and interpret confidence intervals for population variance and standard deviation.

Understand and apply the chi-square test statistic in hypothesis testing related to variance.

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Definitions:

Performance Expectations

The standards or requirements set by an employer regarding how tasks should be performed and goals should be achieved by employees.

Performance Deviations

Refer to variances between actual performance and the expected standard or goals, necessitating corrective actions or adjustments.

Performance Of People

The efficiency and outcome of individuals' work activities, often measured against pre-defined standards or goals.

Unwillingness

A lack of readiness or refusal to do something; absence of willingness.