A Random Sample of Records of Electricity Usage of Homes

question 40

Multiple Choice

A random sample of records of electricity usage of homes gives the amount of electricity used and size (in square feet) of 135 homes.A regression to predict the amount of electricity used (in kilowatt-hours) from size has an R-squared of 71.3%.The residuals plot indicated that a linear model is appropriate.Write a sentence summarizing what
Says about this regression.

• A)Size differences explain 28.7% of the variation in electricity usage.
• B)Differences in electricity usage explain 71.3% of the variation in the size of house.
• C)Size differences explain 71.3% of the variation in the number of homes.
• D)Size differences explain 71.3% of the variation in electricity usage.
• E)Differences in electricity usage explain 28.7% of the variation in the number of house.

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Definitions:

Microsystem

An ecological model's term for the immediate environment in which individuals interact and are directly influenced, such as family and school.

Infant Siblings

Refers to the brothers or sisters of a baby within a family.

Human Development

The multidisciplinary study of how people change and grow over the course of their life, encompassing physical, cognitive, and socioemotional development.

Universally Accepted

Pertains to principles, theories, or practices that are acknowledged and embraced by all or nearly all cultures or societies.