If $\sum x _ { i } = 15 , \sum y _ { 2 } = 36 , \sum x _ { i } y _ { i } = 210 , \sum x _ { i } ^ { 2 } = 30 , \text { and } n = 20$

question 41

Multiple Choice

If $\sum x _ { i } = 15 , \sum y _ { 2 } = 36 , \sum x _ { i } y _ { i } = 210 , \sum x _ { i } ^ { 2 } = 30 , \text { and } n = 20$ then the least squares estimate of the slope coefficient $\beta _ { 1 }$ of the true regression line $y = \beta _ { 0 } + \beta _ { 1 } x$ is

• A) 18.75
• B) 28.42
• C) 9.15
• D) 9.76
• E) 10.50

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Definitions:

Response Bias

A tendency in survey or research respondents to answer questions inaccurately due to misunderstanding, social desirability, or other factors.

Researcher Bias

The tendency for researchers to unintentionally influence the outcome of their studies due to personal values, beliefs, or preferences.

Self-administered Questionnaire

A method of data collection where respondents read and answer questions on a survey instrument without the direct involvement of a researcher.

Close-ended Question

A survey question format that provides a limited set of answers for respondents to choose from.