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Questions are related to the following fact situation:
Calcitron, Inc., has three divisions that each produce the same product, but each in a different region of the country.Calcitron has begun to test the effects of different work schedules, using a different schedule at each division and then comparing the absenteeism, turnover, accident rate, job satisfaction and other data from the workers at each workplace.The company's management hopes to adopt the work schedule that produces the best results.
-The workers express a strong preference for a work shift that would minimize their commuting time.Based on their input, Calcitron has decided to develop two groups of jobs that will be organized to work four days a week for ten hours.Calcitron is engaged in


Definitions:

Point Biserial

A correlation coefficient used to measure the relationship between a binary variable and a continuous variable.

Nominal-Level

Classification of data, for which the measurement scales are categorized without any order or ranking implied among the values.

Coefficient of Determination

A numerical indicator showing the fraction of the variance in a dependent variable accounted for by one or more independent variables within a regression analysis.

Variance

A measure of how much values in a dataset differ from the mean of that dataset.

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