Males and females (ages 13–18) were surveyed to choose a favorite free-time activity: playing computer games, listening to music
, or watching movies/TV. The survey showed the following frequencies: Females—playing computer games: 4; music: 20; watching movies/TV: 16 Males—playing computer games: 15; music: 12; watching movies/TV: 13 Which of the following is a correct two-way frequency table for the data?
Keep doing each step manually, and see where it slips up:
−7.9+8.2−3.4+2.1=−1
−7.9+8.2+(−3.4)+2.1=−1
−7.9+(−3.4)+8.2+2.1=−1
(−7.9+(−3.4))+(8.2+2.1)=−1
−11.3+10.3=−1
