In a Simple Linear Regression Problem, the Following Statistics Are $$\sum ( x - \bar { x } ) ( y - \bar { y } )$$

question 169

Multiple Choice

In a simple linear regression problem, the following statistics are calculated from a sample of 10 observations: $$\sum ( x - \bar { x } ) ( y - \bar { y } )$$ = 2250, $S _ { x }$ = 10, $\sum x$ = 50, $\sum y$ = 75 The least squares estimates of the slope and y-intercept are respectively:

• A)225 and ? 1117.5.
• B)2.5 and ? 5.
• C)25 and ? 117.5.
• D)25 and 117.5.

Identify stakeholders in an organization and understand their roles and impacts.

Understand the concept of globalization and its effects on organizational behavior and practices.

Recognize the importance of systematic research in organizational behavior and the role of multidisciplinary theories.

Understand workforce diversity, its benefits, challenges, and trends affecting organizational behavior.

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Definitions:

Alternative Hypothesis

A statement that contradicts the null hypothesis and indicates there is an effect or difference.

Critical Value Approach

A method used in hypothesis testing where the value of the test statistic is compared to a critical value to decide whether to reject the null hypothesis.

Hypothesized Population

The theoretical or assumed characteristics of a population from which a sample is drawn for the purpose of hypothesis testing.

Standard Error

A statistical measure that describes the accuracy with which a sample distribution represents a population by quantifying the dispersion of sample means around the population mean.