Explain how a mixed economy is a mixture of command and pure market economy.

A mixed economy can accurately describe virtually every economy in the world in 2017. A mixed economy is one in which there are elements of the economy controlled by market forces, and elements that the government plays a direct role in.

A pure market economy is one which the economy is run entirely by free market forces. The government has no role in regulation, subsidies, or any other action that would affect these forces. The success and failure of companies, the quantity of goods produced and the price of those goods, are 100% determined by the free market. 

A command economy, on the other hand, is one in which the government manages virtually every aspect of the economy, and the free market is not allowed to naturally determine quantity and prices of any product. The USSR attempted to administer a command economy in its earlier years, and realized how tremendously complex and difficult this task was.
 
A mixed economy, such as those in the United States or China, is a broad term to define an economy that exists between these two extremes, where both government involvement and free market forces play a role in the economy.

The advantage of administering personality tests on employees is that it will allow the employer to know the mindset and personality of the employee. this will allow the employer to at least have an idea as to how the employee works and how his attitude in the workplace. the disadvantage is that it may make the employee a little anxious as to whether he would meet the personality requirements of the employer and whether he would be able to retain the job or not.