1. 怎么用excel画正态分布曲线
1、Excel 2007版本及以上，假设有这样一组样本数据，存放于A列，首先我们计算出样本的中心值（均值）和标准差。
2、公式直接引用A列计算，这样可以保证不管A列有多少数据，全部可以参与计算。因为是做模板，所以这样就不会因为每次样本数据量变化而计算错误。
3、Excel在2007版本以后标准差函数有STDEV.S和STDEV.P。STDEV.S是样本标准偏差，STDEV.P是基于样本的总体标准偏差。如果你的Excel里没有STDEV.S函数，请使用STDEV函数。
4、正态分布直方图需要确定分组数，组距坐标上下限等。
5、分组数先使用25，上下限与中心值距离(多少个sigma)先使用4。因为使用公式引用完成计算，所以这两个值是可以任意更改的。这里暂时先这样放。
6、计算组坐标。“组”中填充1-100的序列。此处列了100个计算值。原因后面再解释。
7、在G2，G3分别填入1，2。选中G2，G3单元格，将鼠标放在右下角选中框的小黑方块上。当鼠标变成黑色十字时，下拉。直至数值增加至100。
8、H2输入公式=D9，H3单元格输入公式=H2+D$7。为了使公式中一直引用D7单元格，此处公式中使用了行绝对引用。
9、选中H3单元格，将鼠标放在右下角选中框的小黑方块上。当鼠标变成黑色十字时双击，填充H列余下单元格。
10、计算频数。在I2，I3分别填写公式计算频数。同样，选中I3单元格，将鼠标放在右下角选中框的小黑方块上。当鼠标变成黑色十字时双击，填充I列余下单元格。
2. excel如何画正态分布图
以下步骤是针对excel2007的：
第一步，点office按钮——excel选项——加载项——下方“管理”的下拉列表中选择“excel加载项”然后点击“转到”——勾选“分析工具库”然后确定。此步骤完成后，在“数据”选项卡中会出现新的“数据分析”按钮。
第二步，在“数据”选项卡中点击“数据分析”按钮，在列表中选择“随机数发生器”，在“分布”的选项列表中选择“正态”即可生成符合正态分布要求的随机数。
3. 如何用excel画正态分布曲线图
用EXCEL怎么计算平均数、方差、标准差：
1、平均数=average(A1:A100)。
2、方差=vara(A1:A100)。
3、标准差=stdev(A1:A100)。 Microsoft Excel： Microsoft Excel是微软公司的办公软件Microsoft office的组件之一，是由Microsoft为Windows和Apple Macintosh操作系统的电脑而编写和运行的一款试算表软件。Excel 是微软办公套装软件的一个重要的组成部分，它可以进行各种数据的处理、统计分析和辅助决策操作，广泛地应用于管理、统计财经、金融等众多领域。
4. excel 画正态分布
一组数据罗列在excel里面，大小排序，将数据分为几个大小区间段，然后使用excel的一些基本功能，制作直方图，看再加上折线图，就能看出数据的分布状况了
制作时要注意区间段的划分。划分的要适中，否则图形出来过后效果不明显。具体你可以网上查一下直方图的做法
5. 如何用excel画正态分布
使用=NORMINV(RAND(),均值,标准差），就可以产生正态随机数据了。
6. excel画正态分布图和正态分布曲线
具体会用到excel的正态分布函数Normdist（）
输入数据。
1.在单元格A1输入 。
2.选定单元格A1：A121。
3.选取“编辑”菜单下的“填充”—“序列”。
在“序列产生在”框，选定“列”选项；
在“类型”框，选定“等差序列”选项；
在“步长值”框，输入0.05（可以根据自己的需要输入步长值）；
在“终止值”框，输入3。
4.单击“确定”。
5.在单元格B1中输入“=Normdist(a1,0,1,0) ”，回车得0.004432 ，即为 x=-3 时的标准正态分布的概率密度函数值。
6.把鼠标放在单元格B1上的单元格填充柄上，当鼠标变成十字时，向下拖曳鼠标至B121。
这样就可以得出一张正态分布表了。
7. 用excel画正态分布图
可以用透视图(柱图/折线图)来表现一列数据中各个(或各区间)数据出现次数.
效果类似于正态分布图.
8. excel画正态分布图和正态曲线
一、获取正态分布概念密度
正态分布概率密度正态分布函数“NORMDIST”获取。
在这里是以分组边界值为“X”来计算：
Mean=AVERAGE(A:A)(数据算术平均）
Standard_dev=STDEV(A:A)(数据的标准方差）
Cumulative=0(概率密度函数）
二、向下填充。
三、在直方图中增加正态分布曲线图。
1、在直方图内右键→选择数据→添加→。
2、系列名称：选中H1单元格。
3、系列值：选中H2:H21。
4、确定。
四、修整图形
1、在图表区柱形较下方选中正态分布曲线数据，（正态分布密度值和频率数值相比太小了，实在看不清，多试几次，选中后如图，同时正态分布曲线那数数据处于选中状态）。
2、右键→设置数据列格式→系列绘制在→次坐标轴；
关闭，如图。
五、更改系列图表类型
1、选中正态分布柱形图→右键→更改系列图表类型。
2、选中“拆线图”。
3、确定。
六、平滑正态分布图。
选中正态分布曲线→右键→设置数据列格式→线型→勾选“平滑线”→关闭。
大功告成！！！
本例中原始数据：
51.7,50.6,57.9,56.9,56.7,56.7,55.3,56.1,53.7,54.5,56.9,51.9,52.1,55.1,54.9,54.7,55.3,55.3,54.5,54.9,54.5,55.3,54.9,54.3,53.7,53.5,53.7,53.1,54.5,53.1,53.9,53.5,53.3,53.9,53.5,53.5,52.5,53.3,53.5,53.3,53.7,53.1,54.5,53.9,56.7,54.5,54.3,55.1,54.1,54.5,53.9,53.1,53.3,55.3,55.7,56.1,54.7,53.1,53.3,52.7,53.1,52.9,53.1,54.3,53.1,52.7,53.1,53.3,53.1,53.3,53.1,53.3,55.1,54.7,54.9,54.3,53.9,53.7,53.9,53.5,54.5,54.3,55.5,55.7,55.5,54.9,55.3,55.5,53.7,54.1,53.9,55.7,55.9,53.7,53.5,53.1,52.3,52.7,52.9,53.3,53.9,52.7,53.5,53.1,52.7,51.9,52.5,53.9,54.5,55.7,55.3,54.9,53.1,52.9,54.1,53.3,54.7,53.9,54.3,54.1,53.7,53.3,52.7,52.9,52.5,53.9,53.5,54.1,54.1,54.7,54.9,54.9,54.1,53.3,52.9,53.7,53.9,54.3,54.1,54.5,54.7,54.9,52.1,52.9,53.5,52.7,53.1,53.1,53.5,52.9,52.9,53.1,53.3,52.7,53.5,53.9,54.9,55.1,54.3,55.1,54.3,54.3,53.9,54.5,54.5,54.3,55.3,54.5,54.9,53.5,52.1,55.3,55.7,55.7,55.5,54.5,57.7,54.7,53.7,53.1,53.7,55.9,56.1,53.9,53.7,53.3,53.9,53.9,54.5,54.7,56.1,55.7,53.1,53.7,53.5,53.9,53.9,53.5,53.3,53.1,52.5,55.9,55.7,54.1,54.3,54.1,54.1,54.5,54.5,55.1,53.1,53.3,54.1,54.3,53.9,54.1,54.7,54.7,53.7,53.1,53.3,52.7,53.5,52.9,53.7,56.5,56.1,55.7,55.5,56.9,57.7,56.5,55.7,54.1,54.7,55.7,55.5,53.1,52.7,53.1,53.3,53.5,54.3,54.1,54.5,54.7,55.7,55.5,54.1,54.3,54.7,53.1,53.3,53.1,52.7,53.1,53.7,53.1,54.7,54.5,55.1,54.7,54.5,56.1,55.7,53.3,52.5,53.7,54.1,53.3,52.1,52.3,53.1,53.3,53.5,53.3,53.1,52.7,53.1,55.7,55.1,54.3,53.7,53.1,52.9,53.1,52.7,52.5,53.1,53.5,53.1,53.3,54.1,55.1,54.9,56.1,55.7,56.5,54.7,53.7
- 相关评论
- 我要评论
-