A Healthcare Executive Is Using Regression to Predict Total Revenues

question 15

Multiple Choice

A healthcare executive is using regression to predict total revenues.She is deciding whether or not to include both patient length of stay and insurance type in her model.Her first regression model only included patient length of stay.The resulting r² was .83,with an adjusted r² of .82 and her level of significance was .003.In the second model,she included both patient length of stay and insurance type.The r² was .84 and the adjusted r² was .80 for the second model and the level of significance did not change.Which of the following statements is true?

• A)The second model is a better model.
• B)The first model is a better model.
• C)The r² increased when additional variables were added because these variables significantly contribute to the prediction of total revenues.
• D)The adjusted r² always increases when additional variables are added to the model.
• E)None of the above statements are true.

Recognize the importance of environmental factors and community infrastructure in disease prevention.

Understand the historical development of public health initiatives and their impact on community health.

Analyze the role of government and non-governmental organizations in the advancement of public health.

Identify key figures and their contributions to public health and nursing.

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Definitions:

Accuracy in Accounting

The principle that ensures financial records and statements are free from errors or discrepancies and faithfully represent the financial performance and position of an entity.

Operating Activities

Business activities directly related to the production, sales, and delivery of a company's products and services, reflected in its cash flow.

Investing Activities

Part of cash flow from investing, representing transactions related to the acquisition or disposal of long-term assets and investments other than inventory.

Increase or Decrease in Cash

A measure that reflects the change in cash and cash equivalents held by a company over a period of time.