Examlex

Solved

When Does a Study Have Internal Validity? What Are Its

question 10

Essay

When does a study have internal validity? What are its threats? How can they be overcome?


Definitions:

Ampere-Turns

A basic unit for measurement of magnetism. The product of number of turns of wire times current flow.

Electromagnet

A type of magnet in which the magnetic field is produced by an electric current, typically wrapping a wire around a ferromagnetic core, which can be turned on and off with the current.

Proportional

A relationship between two quantities where a change in one results in a corresponding change in the other, often depicted mathematically by a constant ratio.

Compass Needle

A magnetized pointer free to align itself with Earth's magnetic field, used for navigation.

Related Questions