Interpret the Slope and the Y-Intercept of the Least-Squares Regression

question 108

Multiple Choice

Interpret the Slope and the y-intercept of the Least-Squares Regression Line
-Each year a nationally recognized publication conducts its "Survey of America's Best Graduate and Professional Schools." An academic advisor wants to predict the typical starting salary of a graduate at a top business school using GMAT score of the school as a predictor variable. Total GMAT scores range from 200 to 800. A simple linear regression of SALARY versus GMAT using 25 data points shown below.
$$\hat { \beta _ { 0 } } = - 92040 \hat { \beta } 1 = 228 \mathrm {~s} = 3213 \mathrm { R } ^ { 2 } = 0.66 \mathrm { r } = 0.81 \mathrm { df } = 23 \mathrm { t } = 6.67$$
Give a practical interpretation of $\hat { \beta } 1 = 228$ .

• A) We estimate SALARY to increase \(\$ 228\) for every 1 -point increase in GMAT.
• B) We expect to predict SALARY to within \(2 ( 228 ) = \$ 456\) of its true value using GMAT in a straight-line model.
• C) We estimate GMAT to increase 228 points for every \(\$ 1\) increase in SALARY.
• D) The value has no practical interpretation since a GMAT of 0 is nonsensical and outside the range of the sample data.

Grasp the concept and benefits of using an inverted pyramid style in mobile messaging.

Identify different document and information structuring techniques for mobile devices, including linear organization, inverted pyramid, and the concept of micro rests.

Understand how to effectively use topic sentences, headings, and subheadings in blogging.

Acknowledge the necessity of adapting message content and style due to mobile device screen size limitations.

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Definitions:

Orientation Programs

Initiatives designed to introduce and integrate new employees into an organization and its culture.

Stress Reduction

entails strategies and techniques aimed at lowering psychological or physical stress levels.

Psychosocial Support

Assistance provided to individuals to help them cope with mental, emotional, and social challenges.

Career Development

Refers to the progression of an individual's work experiences over time, including education, training, and job positions held.