Statistical measures of change in an economy are called:
a. portfolios
b. indices
c. exchanges
d. stocks
prior to investing, you should
a. do no planning.
b. create a financial statement.
c. get an advisor.
d. create a negative net worth

Indices refer to the statistical measures of change in an economy. It is also called, securities market where an index is an imaginary portfolio of securities that represent a portion of the market. 

Prior to investing, it is always wise to get an advisor. An advisor is someone who is knowledgeable in the different trends of a particular market. All wise business owners have their own consultants and advisors to portion their assets in a way that it will lead to good investments in the future.