📄 statistics .htm

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face=??ì?,SimSun>〔</FONT>a<SUB>1</SUB>, a<SUB>2</SUB>), ……, <FONT lang=ZH-CN 
face=??ì?,SimSun>〔</FONT>a<SUB>k</SUB>,a<SUB>k+1</SUB>)<FONT lang=ZH-CN 
face=??ì?,SimSun>表示。</P>
<P style="LINE-HEIGHT: 200%" align=justify>因为最小值为</FONT>62<FONT lang=ZH-CN 
face=??ì?,SimSun>，组距为</FONT>3<FONT lang=ZH-CN 
face=??ì?,SimSun>，所以最低组的下限取为</FONT>60<FONT lang=ZH-CN 
face=??ì?,SimSun>，这样最低组既包括最小值</FONT>62<FONT lang=ZH-CN 
face=??ì?,SimSun>，又是</FONT>3<FONT lang=ZH-CN 
face=??ì?,SimSun>的倍数。于是分组区间则取为</P></FONT>
<P style="LINE-HEIGHT: 200%" align=justify>[59.5,62.5<FONT lang=ZH-CN 
face=??ì?,SimSun>]）</FONT>, [62.5,65.5<FONT lang=ZH-CN 
face=??ì?,SimSun>]）</FONT>,……,[95.5,98.5<FONT lang=ZH-CN 
face=??ì?,SimSun>)</P><B>
<P style="LINE-HEIGHT: 200%" 
align=justify>⑸</B>计算组中值Xc。每一组的组中值是处在该组分组区间中点位置的数值。组中值等于每组的精确下限与I／2组距之和。</P>
<P style="LINE-HEIGHT: 200%" align=justify>Xc＝精确下限＋I／2</P>
<P style="LINE-HEIGHT: 200%" align=justify>此例中，最低组的组中值Xc＝59.5＋3/2＝61</P><B>
<P style="LINE-HEIGHT: 200%" align=justify>⑥</B>登记次数与计算次数。</P></FONT>
<P style="LINE-HEIGHT: 200%" align=center>
<CENTER>
<TABLE borderColor=#000000 cellSpacing=1 width=576 border=1>
  <TBODY>
  <TR>
    <TD vAlign=center width="19%" height=24><B><FONT lang=ZH-CN 
      face=??ì?,SimSun>
      <P style="LINE-HEIGHT: 200%" align=center>分组区间</FONT></B></P></TD>
    <TD vAlign=center width="17%" height=24><B><FONT lang=ZH-CN 
      face=??ì?,SimSun>
      <P style="LINE-HEIGHT: 200%" align=center>组中值</FONT></B></P></TD>
    <TD vAlign=center width="16%" height=24><B><FONT lang=ZH-CN 
      face=??ì?,SimSun>
      <P style="LINE-HEIGHT: 200%" align=center>登记次数</FONT></B></P></TD>
    <TD vAlign=center width="11%" height=24><B><FONT lang=ZH-CN 
      face=??ì?,SimSun>
      <P style="LINE-HEIGHT: 200%" align=center>次数</FONT></B></P></TD>
    <TD vAlign=center width="13%" height=24><B><FONT lang=ZH-CN 
      face=??ì?,SimSun>
      <P style="LINE-HEIGHT: 200%" align=center>频率</FONT></B></P></TD>
    <TD vAlign=center width="13%" height=24><B><FONT lang=ZH-CN 
      face=??ì?,SimSun>
      <P style="LINE-HEIGHT: 200%" align=center>累加次数</FONT></B></P></TD>
    <TD vAlign=center width="13%" height=24><B><FONT lang=ZH-CN 
      face=??ì?,SimSun>
      <P style="LINE-HEIGHT: 200%" align=center>累积频率</FONT></B></P></TD></TR>
  <TR>
    <TD vAlign=center width="19%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>[96.5,99.5)</P></TD>
    <TD vAlign=center width="17%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>97</P></TD>
    <TD vAlign=center width="16%" height=19>
      <P style="LINE-HEIGHT: 200%" align=justify><IMG height=24 
      src="绪 论.files/Image2.gif" width=24><IMG height=28 
      src="绪 论.files/Image3.gif" width=27></P></TD>
    <TD vAlign=center width="11%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>2</P></TD>
    <TD vAlign=center width="13%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>0.02</P></TD>
    <TD vAlign=center width="13%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>100</P></TD>
    <TD vAlign=center width="13%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>1</P></TD></TR>
  <TR>
    <TD vAlign=center width="19%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>[93.5,96.5<FONT lang=ZH-CN 
      face=??ì?,SimSun>）</FONT></P></TD>
    <TD vAlign=center width="17%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>94</P></TD>
    <TD vAlign=center width="16%" height=19>
      <P style="LINE-HEIGHT: 200%"></P></TD>
    <TD vAlign=center width="11%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>3</P></TD>
    <TD vAlign=center width="13%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>0.03</P></TD>
    <TD vAlign=center width="13%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>98</P></TD>
    <TD vAlign=center width="13%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>0.98</P></TD></TR>
  <TR>
    <TD vAlign=center width="19%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>[90.5,93.5)</P></TD>
    <TD vAlign=center width="17%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>91</P></TD>
    <TD vAlign=center width="16%" height=19>
      <P style="LINE-HEIGHT: 200%" align=justify><IMG height=24 
      src="绪 论.files/Image2.gif" width=24><IMG height=22 
      src="绪 论.files/Image4.gif" width=23></P></TD>
    <TD vAlign=center width="11%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>4</P></TD>
    <TD vAlign=center width="13%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>0.04</P></TD>
    <TD vAlign=center width="13%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>95</P></TD>
    <TD vAlign=center width="13%" height=19>
      <P style="LINE-HEIGHT: 200%" align=center>0.95</P></TD></TR>
  <TR>
    <TD vAlign=center width="19%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>[87.5,90.5)</P></TD>
    <TD vAlign=center width="17%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>88</P></TD>
    <TD vAlign=center width="16%" height=20><FONT lang=ZH-CN face=??ì?,SimSun>
      <P style="LINE-HEIGHT: 200%" align=justify>正</FONT></P></TD>
    <TD vAlign=center width="11%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>8</P></TD>
    <TD vAlign=center width="13%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>0.08</P></TD>
    <TD vAlign=center width="13%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>91</P></TD>
    <TD vAlign=center width="13%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>0.91</P></TD></TR>
  <TR>
    <TD vAlign=center width="19%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>[83.5,87.5)</P></TD>
    <TD vAlign=center width="17%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>85</P></TD>
    <TD vAlign=center width="16%" height=20>
      <P style="LINE-HEIGHT: 200%" align=justify><IMG height=28 
      src="绪 论.files/Image3.gif" width=27><FONT lang=ZH-CN 
      face=??ì?,SimSun>正</FONT> <FONT lang=ZH-CN face=??ì?,SimSun>正</FONT> <FONT 
      lang=ZH-CN face=??ì?,SimSun>一</FONT></P></TD>
    <TD vAlign=center width="11%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>11</P></TD>
    <TD vAlign=center width="13%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>0.11</P></TD>
    <TD vAlign=center width="13%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>83</P></TD>
    <TD vAlign=center width="13%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>0.83</P></TD></TR>
  <TR>
    <TD vAlign=center width="19%" height=25>
      <P style="LINE-HEIGHT: 200%" align=center>[80.5,83.5<FONT lang=ZH-CN 
      face=??ì?,SimSun>）</FONT></P></TD>
    <TD vAlign=center width="17%" height=25>
      <P style="LINE-HEIGHT: 200%" align=center>82</P></TD>
    <TD vAlign=center width="16%" height=25><FONT lang=ZH-CN face=??ì?,SimSun>
      <P style="LINE-HEIGHT: 200%" align=justify>正</FONT> <FONT lang=ZH-CN 
      face=??ì?,SimSun>正</FONT> <FONT lang=ZH-CN 
face=??ì?,SimSun>正</FONT></P></TD>
    <TD vAlign=center width="11%" height=25>
      <P style="LINE-HEIGHT: 200%" align=center>17</P></TD>
    <TD vAlign=center width="13%" height=25>
      <P style="LINE-HEIGHT: 200%" align=center>0.17</P></TD>
    <TD vAlign=center width="13%" height=25>
      <P style="LINE-HEIGHT: 200%" align=center>72</P></TD>
    <TD vAlign=center width="13%" height=25>
      <P style="LINE-HEIGHT: 200%" align=center>0.72</P></TD></TR>
  <TR>
    <TD vAlign=center width="19%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>[77.5,80.5)</P></TD>
    <TD vAlign=center width="17%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>79</P></TD>
    <TD vAlign=center width="16%" height=20>
      <P style="LINE-HEIGHT: 200%" align=justify><IMG height=22 
      src="绪 论.files/Image4.gif" width=23><FONT lang=ZH-CN 
      face=??ì?,SimSun>正</FONT> <FONT lang=ZH-CN face=??ì?,SimSun>正</FONT> <FONT 
      lang=ZH-CN face=??ì?,SimSun>正</FONT></P></TD>
    <TD vAlign=center width="11%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>19</P></TD>
    <TD vAlign=center width="13%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>0.19</P></TD>
    <TD vAlign=center width="13%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>55</P></TD>
    <TD vAlign=center width="13%" height=20>
      <P style="LINE-HEIGHT: 200%" align=center>0.55</P></TD></TR>
  <TR>
    <TD vAlign=center width="19%" height=20>
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