In a Study Conducted by J

question 46

Multiple Choice

In a study conducted by J.Lefkowitz (1970) in a lingerie production factory to determine the effects of training on productivity and turnover, the researcher found .

• A)the longer the training received in the training facility, the lower the rate of turnover
• B)the longer the training received in the training facility, the higher was the average daily rate of production
• C)the level of training was the dependent variable
• D)the production rate and turnover were the independent variables

Understand the implications of sampling bias and how it affects statistical inference.

Understand the concept of margin of error and how it affects the precision of confidence intervals.

Apply statistical methods to practical problems in quality control and research.

Understand the construction and interpretation of confidence intervals.

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Definitions:

Sum of Squares for Regression

A measure in statistical analysis that quantifies the variation in a dependent variable explained by one or more independent variables.

SSR

Sum of Squares due to Regression, a measure used in statistical analysis to determine the variance explained by a linear regression model.

Economics

The social science that studies how individuals, governments, firms, and nations make choices on allocating resources to satisfy their wants and needs.

Income

The amount of money or its equivalent received during a period of time in exchange for labor or services, from the sale of goods or property, or as a profit from financial investments.