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时间:2018-10-03
《概率论与数理统计课外实验——模拟投硬币实验》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、概率论与数理统计课外实验教师:李**实验者:李**学院:*********学院专业班级:*****班学号:*************实验时间:2013年5月loanapprovalandpostcreditapprovalofficer/atalllevelsinaccordancewithcreditapprovalrules,licensingandeventualexerciseofcreditdecisionpowerofpersonsorinstitutions.Reviewfindingsandreviewcomments,accordingto
2、theBank'scredit7/7实验课题:用计算机模拟投硬币实验一,实验背景1,对于一枚均匀的硬币,规定有数字的一面为正面,每次投掷,出现正面与反面的机会是相等的。那对于同一枚硬币多次投掷,出现正面的次数与出现反面的次数又分别是多少呢?随着投掷的次数逐渐增加,正面向上的频率有什么变化呢?2,由于需要实验的次数之多,需要耗费大量人力物力。随着计算机技术的发展,能不能用计算机模拟投硬币实验,一加快实验进程,节省时间,人力物力呢?二,理论依据1,对于一枚均匀的硬币,每次投掷出现正面与反面的机会是均等的。于是我们可以用数字1代表出现的是正面,数字0代表出现的是反
3、面。而可以利用计算机等可能的产生0和1这两个随机数。于是,计算机每次产生一个随机数0或1,代表一次投硬币实验。这样,就可以用计算机快速模拟大量投硬币实验的结果。三,投硬币实验编程源代码#include#include#includevoidmain(){unsignedlonginta,i,m,b=0,n,f;printf("请输入实验的次数a=:");loanapprovalandpostcreditapprovalofficer/atalllevelsinaccordancewithcredita
4、pprovalrules,licensingandeventualexerciseofcreditdecisionpowerofpersonsorinstitutions.Reviewfindingsandreviewcomments,accordingtotheBank'scredit7/7scanf("%ld",&a);longdoublec,g,ave;for(i=0;i5、面向上的次数为%ld反面向上的次数为%ld正面出现的频率为%20.15f",a,b,f,ave);scanf("%d,&m");//无用输入函数,只是为了让此程序直接可以在win7系统上以dos窗口运行}一,部分实验截图loanapprovalandpostcreditapprovalofficer/atalllevelsinaccordancewithcreditapprovalrules,licensingandeventualexerciseofcreditdecisionpowerofpersonsorinstitutions.Revie6、wfindingsandreviewcomments,accordingtotheBank'scredit7/7一,实验数据投硬币实验实验编号实验次数正面向上的次数反面向上的次数正面向上的频率110370.323015150.535028220.56410048520.48510005074930.5076200010019990.500574000199720030.4992585000250524950.50198000402639740.503251010000496550350.49651115000754274580.5028122000099887、100120.4994133000015088149120.502933333145000024124258760.482481510000050145498550.5014516200000100208997920.50104loanapprovalandpostcreditapprovalofficer/atalllevelsinaccordancewithcreditapprovalrules,licensingandeventualexerciseofcreditdecisionpowerofpersonsorinstitutions.Reviewf8、indingsandreviewcomments,a
5、面向上的次数为%ld反面向上的次数为%ld正面出现的频率为%20.15f",a,b,f,ave);scanf("%d,&m");//无用输入函数,只是为了让此程序直接可以在win7系统上以dos窗口运行}一,部分实验截图loanapprovalandpostcreditapprovalofficer/atalllevelsinaccordancewithcreditapprovalrules,licensingandeventualexerciseofcreditdecisionpowerofpersonsorinstitutions.Revie
6、wfindingsandreviewcomments,accordingtotheBank'scredit7/7一,实验数据投硬币实验实验编号实验次数正面向上的次数反面向上的次数正面向上的频率110370.323015150.535028220.56410048520.48510005074930.5076200010019990.500574000199720030.4992585000250524950.50198000402639740.503251010000496550350.49651115000754274580.502812200009988
7、100120.4994133000015088149120.502933333145000024124258760.482481510000050145498550.5014516200000100208997920.50104loanapprovalandpostcreditapprovalofficer/atalllevelsinaccordancewithcreditapprovalrules,licensingandeventualexerciseofcreditdecisionpowerofpersonsorinstitutions.Reviewf
8、indingsandreviewcomments,a
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