In order for a test to be normed and standardized it must be tested on
a group of same-age peers
a representative sample
children with mental disabilities
children of average intelligence

A representative sample

Explanation:

A representative sample is a group that closely resembles the characteristics of the population from which the sample was drawn. This means that the sample closely reflects the population, and therefore, the results we get from the sample would likely be valid for the population as well. If the sample we use is not representative of the population, then the conclusions we reach would most likely not hold true in the population at large.

muslims have taken his goods and products to different parts of asia an indonesia. sometimes just traveled and trade, but in other occasions, stayed in the place and made a living.

trade was the key for muslims economies to prosper. their commerce routes reached far places like malaysia and java in the 11th century.

another important factor for prosperity was that muslim states served as the middle point for european traders.

they used to travel by land but sailing the seas -the indian ocean- really increase the exportation of products.