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    精英家教网 > 初中数学 > 题目详情
    “who  are  you？”这句话中，字母“o”出现的频率是（　　）
    A、2
    B、
    2
    9
    C、
    1
    5
    D、
    1
    3
    分析：先确定字母“o”出现的频数和数据总和，再根据频率、频数的关系：频率=频数÷数据总和，可得数据“o”出现的频率．
    解答：解：∵“who  are  you？”这句话中，共9个字母，字母“o”出现的频数为2，
    ∴字母“o”出现的频率=
    2
    9
    ．
    故选B．
    点评：本题考查频率、频数、总数的关系：频率=频数÷数据总和．
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