Psychological tests are often used to measure characteristics (e. g., iq) across people of different ages, who live in different places, and so on. in order that people can be properly ordered on the dimension of measurement (e. g., compare their iqs), it's important that these tests are:

Latonya was just hired as an engineer for an electric company. she will make a salary of $50,000 a year. how much of latonya's salary will be taxed at the 10 percent rate? how much of latonya's salary will be taxed at the 28 percent rate? latonya was just hired as an engineer for an electric company. she will make a salary of $50,000 a year. how much of latonya's salary will be taxed at the 10 percent rate? how much of latonya's salary will be taxed at the 28 percent rate?