If a test measures what it is designed to measure, then it has this. Reliability
Cause and Effect
Bias
Validity

Why might the new countries be interested in joining the european union (eu)?

Which type of seismic waves are confined at the surface

Afootpath is to be constructed in a park in the shape of a parallelogram. when a coordinate plane is laid over a map of the park, the vertices of the footpath are (-4,2) (8,2) (11,7) and (-1,7). what is the perimeter of this path