第三部分 资料分析

<!doctype html>资料分析

资料分析知识目录

 
 
 
 
 
 
 
 
第一章 计算方法
第二章 一般增长相关
第三章 间隔增长率
第四章 隔年增长
第五章 混合增长率
第六章 比重
第七章 平均数
第八章 倍数
 

 

 

第一章 速算方法 *****

第一节 加减法

 
 
 
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尾数法:主要用于简单加减计算,当选项与材料的精确度一致且尾数出现不同时,在计算加减法类题目时优先计算尾数。
截位法:在加减法的计算中,当选项与材料的精确度不一致,即粗略计算时,可根据选项对数据进行截位舍相同处理。
 

 

第二节 截位直除法

 
 
 
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左二截:
除法类题目中,当选项首位不同时,可以将分母从左向右截取前两位来计算,第三位进行四舍五入处理即可。
 
留三位:
除法类题目中,当选项首位相同,第二位不同时,可以将分母从左向右截取前三位来计算,第四位进行四舍五入处理即可。
精确计算:
除法类题目中,当选项首两位都相同,或者很接近时,需要进行精确计算,考虑误差分析或者不处理任何数据,直接计算。

截位舍相同:
除法类题目中,当分母或分子中出现加减法计算时,可以依据选项将分子或分母进行截位舍相同处理。
 
 

 

第三节 特殊值应用

特殊值是指题目中的百分数位于一个比较特殊的分数值附近,将其转化为简单分数参与计算,会大大化简运算式,大幅提高计算的速度和正确率

1.常用情形:

(1) 求增长量

增长量现期量增长率增长率现期量现期量【增长率】

(2) 求减少量

减少量现期量减少率减少率现期量现期量【减少率】

2.常见百分数与分数转化对照表

分数百分类分数百分数
1/2 50% 1/12 8.3%
1/3 33.3% 1/13 7.7%
1/4 25% 1/14 7.1%
1/5 20% 1/15 6.7%
1/6 16.7% 1/16 6.3%
1/7 14.3% 1/17 5.9%
1/8 12.5% 1/18 5.6%
1/9 11.1% 1/19 5.3%
1/11 9.1% 1/20 5%

 

第四节 分数比较

 
 
 
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一、分数性质:分子相对大且分母相对小的分数值偏大。
二、估算首位数字:若数量级相同的情况下,可以通过估算首位数字进行比较大小。
 

 

第五节 公式法

增长率化除为乘,需要|r| ≤ 5%

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第二章 一般增长相关 *****

现期与基期

资料分析中作为对比参照的时期称为基期,描述基期的具体数值称为基期量;而相对于基期的时期称为现期,描述现期的具体数值称为现期量。

例1:2018 年小王一月收入为5500 元,2017 年小王一月收入为5000 元。2018年比2017 年增长500 元。

    
现期 2018 现期量 5500元
基期 2017 基期量 5000元

 

同比与环比

例2:2018 年小王一月收入为5500 元,2017 年小王一月收入为5000 元。2018年比2017 年增长10%。

   
  同比 环比
2021年 2020年 2020年
2021年5月 2020年5月 2021年4月
2021年上半年 2020年上半年 2020年下半年
2021年第一季度 2020年第一季度 2020年第四季度

 

增长量公式:

增长量 = 现基量 - 基基量

增长率公式:

增长率增长量基期量

 

第一节 基期相关

基期量计算

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基期量现期量
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多个基期量比较大小

一般表现为分数比较大小

基期量现期量

基期和差计算

1.判断正负

2.排除现期差

3.与现期差比较大小

 

 

第二节 现期相关

增长率现期量基期量
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第三节 一般增长率相关

一般增长率计算

增长率增长量基期量现基量基期量基期量增长量现期量增长量现基

 

百分数与百分点

百分数用来反映量之间的比例关系

百分点用来反映百分数的变化

 

增幅、降幅与变化幅度(涨跌幅度)

增幅一般就是指增长率,有正有负

降幅指下降的幅度,降幅比较大小时,前提必须为下降

变化幅度指增长或下降的绝对率,变化幅度比较大小时用增幅(降幅)绝对值

 

一般增长率比较大小

1.直接读数比较

2.增长量替代

3.现期量/基期量 代替

4.直接计算

 

第四节 增长量相关

增长量计算

增长量现基
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增长量比较大小

1.减法——直接比较

增长量现基

当|r| ≤ 50%时,可以比较A*r

2.大大则大,一大一小看乘积

 

 

第三章 间隔增长率

 
 
 
xxxxxxxxxx
 
 
 
 
特征:间隔一年,求增长率
例如:2015年上半年全国固定资产投资额比2013年约增长了:
A. 11.4%B. 17.7%C. 22.8%D.45.6%
2015年同比增长率为r1
2014年同比增长率为r2
则2015年相比2013年的增长率R为多少?
设2015为A,2013为B
 
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第四章 年均增长

特征:平均每年增长。。。。。

     
  2015年 2016年 2017年 2018年
收入/万元 4 6 7 11

2015~2018年间

1.平均每年增长多少万元?

 
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2.平均每年增长……%?

 
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第五章 混合增长率

特征:有各部分量相加为一整体

混合后增长率在两部分中间,且偏向基数大的一侧

 

 

第六章 比重

第一节 现期比重

 
 
 
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比重即部分在整体中所占的比例

形式:
给部分量和整体量,求比重
给整体量和比重,求部分量
给部分量和比重,求整体量
 

对应公式

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部分量整体量比重
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第二节 基期比重

 
 
 
xxxxxxxxxx
 
 
 
 
2017年某班级全班人数100人,同比增长10%。其中,女生人数为30人,同比增长30%
问:2016年女生占全班人数的比重为多少?
A: 部分量
B: 整体量
a: A对应的增长率
b: B对应的增长率
 
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基比

 

第三节 两期比重

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比重增长量现比基比
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a>b, 比重上升

a<b, 比重下降

a=b, 比重不变

 

 

第七章 平均数

第一节 现期平均数

特征:每……、单位……、……均……

公式:

平均数总量份数

第二节 基期平均数

 
 
 
xxxxxxxxxx
 
 
 
 
A: 现期总量
B: 现期份数
 
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第三节 平均数的增长率

 

 

 

第八章 倍数

第一节 现期倍数

 
 
 
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倍数是由两个有联系的指标对比出来的相对数,A是B的A/B倍
【注】A是B的几倍,为倍数问法;A比B多几倍,多几倍 = 是几倍-1 = 增长率。
例:2017年5月,我国城市商业银行净资产额约为200000亿元,股份制商业银行净资产额约为300000亿元。则2017年5月,我国股份制商业银行净资产额约是城市商业银行净资产额的()倍。
 

 

第二节 基期倍数

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y="0"></use></g></g></g></g></svg>

 

 

 

公式总结

现期量基期量增长量基期量增长率
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增长量现期量基期量基期量增长率现期量增长率增长率
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transform="translate(1610,0)"><text font-family="STIXGeneral,'Arial Unicode MS',serif" stroke="none" transform="scale(33.55) matrix(1 0 0 -1 0 0)">量</text></g><use xlink:href="#E39-MJMAIN-2212" x="2637" y="0"></use><g transform="translate(3638,0)"><text font-family="STIXGeneral,'Arial Unicode MS',serif" stroke="none" transform="scale(33.55) matrix(1 0 0 -1 0 0)">增</text></g><g transform="translate(4443,0)"><text font-family="STIXGeneral,'Arial Unicode MS',serif" stroke="none" transform="scale(33.55) matrix(1 0 0 -1 0 0)">长</text></g><g transform="translate(5248,0)"><text font-family="STIXGeneral,'Arial Unicode MS',serif" stroke="none" transform="scale(33.55) matrix(1 0 0 -1 0 0)">量</text></g></g></g></g><use xlink:href="#E39-MJMAIN-3D" x="20185" y="0"></use><g transform="translate(20963,0)"><g transform="translate(397,0)"><rect stroke="none" width="6173" height="60" x="0" y="220"></rect><g transform="translate(60,676)"><text font-family="STIXGeneral,'Arial Unicode MS',serif" stroke="none" transform="scale(33.55) matrix(1 0 0 -1 0 0)">现</text><g transform="translate(805,0)"><text font-family="STIXGeneral,'Arial Unicode MS',serif" stroke="none" transform="scale(33.55) matrix(1 0 0 -1 0 0)">期</text></g><g transform="translate(1610,0)"><text font-family="STIXGeneral,'Arial Unicode MS',serif" stroke="none" transform="scale(33.55) matrix(1 0 0 -1 0 0)">量</text></g><use xlink:href="#E39-MJMAIN-2212" x="2637" y="0"></use><g transform="translate(3638,0)"><text font-family="STIXGeneral,'Arial Unicode MS',serif" stroke="none" transform="scale(33.55) matrix(1 0 0 -1 0 0)">基</text></g><g transform="translate(4443,0)"><text font-family="STIXGeneral,'Arial Unicode MS',serif" stroke="none" transform="scale(33.55) matrix(1 0 0 -1 0 0)">期</text></g><g transform="translate(5248,0)"><text font-family="STIXGeneral,'Arial Unicode MS',serif" stroke="none" transform="scale(33.55) matrix(1 0 0 -1 0 0)">量</text></g></g><g transform="translate(1879,-686)"><text 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年均增长量末期量初期量相差年数
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间隔增长率
 现期基期增长量增长率
倍数        
比重        
平均数        

 

 

ps

 
 
 
xxxxxxxxxx
 
 
 
 
翻两番是4倍
直辖市:北京、天津、上海、重庆
多数以上就是一半以上的意思
贡献率 = 部分增长量 ÷ 整体的基期量  
 
 
 
 
xxxxxxxxxx
 
 
 
 
\overline{平均值字母} ---> 输入平均数
\frac{分子}{分母} ---> 输入分数
\times ---> 输入乘号
8^2 ---> 输入8的平方
8_2 ---> 输入下标
a^{上标}_{下标} ---> 既带下标又带上标
 

 

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