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“May you have a good summer holiday．”（祝你有個快樂的暑假），在這段句子的所有英文字母中，字母a出現的頻率是

．

分析：找出所有字母的個數以及字母a的個數，然后根據頻率=

頻數

數據總和

進行計算即可得解．

解答：解：“May you have a good summer holiday”中共有28個字母，
字母a出現了4次，
所以，字母a出現的頻率=

．
故答案為：

．

點評：本題考查了頻率、頻數，主要利用了頻率=

頻數

數據總和

．

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