A(n) ____________________ Is a Battery-Operated Power Source Directly Attached to One

question 9

Short Answer

A(n) ____________________ is a battery-operated power source directly attached to one or more devices and to a power supply (such as a wall outlet) that prevents undesired features of the wall outlet's A/C power from harming the device or interrupting its services.

Comprehend the difference between experimental and correlational research designs.

Identify the role of sample representativeness in research and the implications of biased samples.

Recognize the terms "incidence" and "prevalence" in epidemiological research and their significance.

Understand the concept of a third variable problem in correlational research.

---

Definitions:

Transcontinental Railroad

A continuous rail line that connects the east and west coasts of the United States, completed in 1869, facilitating mass migration, goods transportation, and economic development.

Homestead Act

A United States federal law enacted in 1862 that granted 160 acres of public land to settlers for a small fee, assuming they would improve the land by building a dwelling and cultivating crops.

160 Acre Parcels

A reference to the Homestead Act of 1862 in the United States, which allowed settlers to claim 160 acres of public land in exchange for cultivating it for five years.

Improved

Describes something that has been made better or enhanced in quality, performance, or efficiency.