@Tiroc

On a particular day, the Dow Jones had a rate of change of 2.1%. Which of the following statements must also be true?

A. The average of the 30 stocks in the Dow Jones decreased.
B. Every stock in the Dow Jones decreased.
C. The NASDAQ decreased.
D. The S&P 500 increased.

Question

@Tiroc 

On a particular day, the Dow Jones had a rate of change of 2.1%. Which of the following statements must also be true?

 		A.	The average of the 30 stocks in the Dow Jones decreased.
 		B.	Every stock in the Dow Jones decreased.
 		C.	The NASDAQ decreased.
 		D.	The S&P 500 increased.

anonymous · Answer

Only A follows from the original statement.  Not every stock needs to decrease, and C and D are irrelevant to the DJI.