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Question
hamilton middle school is holding a talent show. so far, 9 students signed up to sing, 3 students signed up to dance, and 3 students signed up to do comedy routines. complete the relative frequency table for the data. hamilton middle school talent show act singing dancing comedy relative frequency blank% blank% blank%
Step1: 计算总人数
总人数为唱歌、跳舞和喜剧表演的人数之和,即\(9 + 3 + 3 = 15\)人。
Step2: 计算唱歌的相对频率
唱歌的相对频率为唱歌的人数除以总人数再乘以\(100\%\),即\(\frac{9}{15} \times 100\% = 60\%\)。
Step3: 计算跳舞的相对频率
跳舞的相对频率为跳舞的人数除以总人数再乘以\(100\%\),即\(\frac{3}{15} \times 100\% = 20\%\)。
Step4: 计算喜剧的相对频率
喜剧的相对频率为喜剧的人数除以总人数再乘以\(100\%\),即\(\frac{3}{15} \times 100\% = 20\%\)。
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Singing: \(60\%\),Dancing: \(20\%\),Comedy: \(20\%\)