Analysis

2019年9月12日の結果
  • 日経平均株価の終値対始値比(\(x\))と東京市場ドル円レートの終値対始値比(\(y\))との正規線形モデル。
  • 終値対始値比(\(\%\)):分母は始値、分子は終値。
  • \(y=ax+b+\epsilon,\;\epsilon \sim N(0,\sigma^2)\)
  • 有意水準は\(5\%\)
  • \(b=0\)が棄却されなかった場合、15時時点(大引け時点)の日経平均株価が始値比で仮に1%上昇(下落)したとすると、その2時間後(17時点)のドル円レートは9時時点のドル円レートより\(a\%\)上昇(下落)することを意味します。
  • Ljung-Box 検定のラグは10としている。
  • 過去の解説動画:twitter
  • 過去の解説動画:twilog
時系列チャート

[1] "USDJPY"
          Date   Open   High    Low  Close Center  Index CloseToOpen HighToLow     MA25 DeviationRate Close:Diff(lag=1) Close:Ratio(lag=1)
868 2019-08-23 106.47 106.67 106.43 106.65 106.55 109.07       0.169     0.226 107.1032         -0.42              0.20              0.188
869 2019-08-26 104.85 105.95 104.46 105.74 105.25 108.65       0.849     1.426 107.0268         -1.20             -0.91             -0.853
870 2019-08-27 105.97 106.15 105.60 105.74 105.84 109.13      -0.217     0.521 106.9416         -1.12              0.00              0.000
871 2019-08-28 105.75 105.89 105.65 105.74 105.79 108.85      -0.009     0.227 106.8468         -1.04              0.00              0.000
872 2019-08-29 106.09 106.17 105.83 106.11 105.92 108.32       0.019     0.321 106.7696         -0.62              0.37              0.350
873 2019-08-30 106.46 106.54 106.29 106.52 106.43 108.72       0.056     0.235 106.7080         -0.18              0.41              0.386
874 2019-09-02 106.14 106.28 105.94 106.26 106.16 108.98       0.113     0.321 106.6132         -0.33             -0.26             -0.244
875 2019-09-03 106.20 106.38 105.93 105.99 106.30 109.21      -0.198     0.425 106.5068         -0.49             -0.27             -0.254
876 2019-09-04 105.86 106.25 105.83 106.24 105.99 108.28       0.359     0.397 106.4104         -0.16              0.25              0.236
877 2019-09-05 106.35 106.75 106.33 106.52 106.40 107.70       0.160     0.395 106.3288          0.18              0.28              0.264
878 2019-09-06 107.07 107.10 106.92 106.98 107.05 107.45      -0.084     0.168 106.2420          0.69              0.46              0.432
879 2019-09-09 106.95 107.02 106.76 106.97 106.95 107.12       0.019     0.244 106.2440          0.68             -0.01             -0.009
880 2019-09-10 107.33 107.50 107.19 107.33 107.43 106.77       0.000     0.289 106.2992          0.97              0.36              0.337
881 2019-09-11 107.60 107.85 107.50 107.81 107.64 106.54       0.195     0.326 106.3564          1.37              0.48              0.447
882 2019-09-12 108.02 108.17 107.79 107.91 108.03     NA      -0.102     0.353 106.4208          1.40              0.10              0.093
[1] "NIKKEI"
          Date     Open     High      Low    Close CloseToOpen HighToLow     MA25 DeviationRate Close:Diff(lag=1) Close:Ratio(lag=1)
868 2019-08-23 20579.98 20719.31 20579.98 20710.91       0.636     0.677 21013.52         -1.44             82.90              0.402
869 2019-08-26 20325.44 20329.01 20173.76 20261.04      -0.317     0.770 20965.28         -3.36           -449.87             -2.172
870 2019-08-27 20467.22 20529.94 20439.92 20456.08      -0.054     0.440 20926.85         -2.25            195.04              0.963
871 2019-08-28 20474.31 20511.21 20433.31 20479.42       0.025     0.381 20881.19         -1.92             23.34              0.114
872 2019-08-29 20500.50 20520.68 20361.12 20460.93      -0.193     0.784 20831.25         -1.78            -18.49             -0.090
873 2019-08-30 20641.49 20748.35 20633.30 20704.37       0.305     0.558 20789.16         -0.41            243.44              1.190
874 2019-09-02 20625.75 20667.56 20614.29 20620.19      -0.027     0.258 20747.64         -0.61            -84.18             -0.407
875 2019-09-03 20581.58 20662.23 20578.02 20625.16       0.212     0.409 20707.98         -0.40              4.97              0.024
876 2019-09-04 20578.67 20694.35 20554.16 20649.14       0.342     0.682 20665.57         -0.08             23.98              0.116
877 2019-09-05 20800.29 21164.61 20787.93 21085.94       1.373     1.812 20648.15          2.12            436.80              2.115
878 2019-09-06 21201.83 21241.29 21145.81 21199.57      -0.011     0.452 20634.49          2.74            113.63              0.539
879 2019-09-09 21214.56 21333.51 21182.26 21318.42       0.490     0.714 20643.74          3.27            118.85              0.561
880 2019-09-10 21363.57 21438.35 21350.35 21392.10       0.134     0.412 20670.61          3.49             73.68              0.346
881 2019-09-11 21466.66 21619.21 21437.82 21597.76       0.611     0.846 20711.11          4.28            205.66              0.961
882 2019-09-12 21761.09 21825.92 21743.96 21759.61      -0.007     0.377 20760.83          4.81            161.85              0.749

単位根検定・共和分検定

  • CADFtest {CADFtest}
  • ca.po {urca}
Analysis period: 2019-06-19 ~ 2019-09-12,60days

$USDJPY_CloseToOpen

    ADF test

data:  x
ADF(1) = -8.6388, p-value = 0.00000000598
alternative hypothesis: true delta is less than 0
sample estimates:
    delta 
-1.678313 


$NIKKEI_CloseToOpen

    ADF test

data:  x
ADF(0) = -10.325, p-value = 0.0000000001107
alternative hypothesis: true delta is less than 0
sample estimates:
    delta 
-1.293477 
Analysis period: 2019-06-19 ~ 2019-09-12,60days


######################################## 
# Phillips and Ouliaris Unit Root Test # 
######################################## 

Test of type Pu 
detrending of series none 


Call:
lm(formula = z[, 1] ~ z[, -1] - 1)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.43763 -0.15127 -0.01163  0.08489  0.90853 

Coefficients:
        Estimate Std. Error t value Pr(>|t|)    
z[, -1]  0.18780    0.05229   3.591 0.000671 ***
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

Residual standard error: 0.2169 on 59 degrees of freedom
Multiple R-squared:  0.1794,    Adjusted R-squared:  0.1655 
F-statistic:  12.9 on 1 and 59 DF,  p-value: 0.0006713


Value of test-statistic is: 36.6741 

Critical values of Pu are:
                  10pct    5pct    1pct
critical values 20.3933 25.9711 38.3413

最小二乗法

  • lm {stats}
  • dwtest {lmtest}
  • ks.test {stats}
  • confint {stats}
  • Box.test {stats}
# 切片項 ≠ 0

Analysis period: 2019-06-19 ~ 2019-09-12,60days


Call:
lm(formula = USDJPY_CloseToOpen ~ NIKKEI_CloseToOpen, data = USDJPY_NIKKEI)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.42673 -0.14070  0.00163  0.09574  0.92203 

Coefficients:
                   Estimate Std. Error t value Pr(>|t|)    
(Intercept)        -0.01194    0.02892  -0.413 0.681298    
NIKKEI_CloseToOpen  0.19273    0.05400   3.569 0.000728 ***
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

Residual standard error: 0.2185 on 58 degrees of freedom
Multiple R-squared:  0.1801,    Adjusted R-squared:  0.1659 
F-statistic: 12.74 on 1 and 58 DF,  p-value: 0.0007278


-----------------------------------------------------------------------------

    Durbin-Watson test

data:  OLS_Model
DW = 2.2494, p-value = 0.8441
alternative hypothesis: true autocorrelation is greater than 0


-----------------------------------------------------------------------------

    One-sample Kolmogorov-Smirnov test

data:  ResidualsOLS
D = 0.11844, p-value = 0.3419
alternative hypothesis: two-sided


-----------------------------------------------------------------------------
                         2.5 %     97.5 %
(Intercept)        -0.06983422 0.04595719
NIKKEI_CloseToOpen  0.08462926 0.30083094

-----------------------------------------------------------------------------

    Box-Ljung test

data:  ResidualsOLS
X-squared = 14.408, df = 10, p-value = 0.1552
# 切片項 = 0

Analysis period: 2019-06-19 ~ 2019-09-12,60days


Call:
lm(formula = USDJPY_CloseToOpen ~ NIKKEI_CloseToOpen - 1, data = USDJPY_NIKKEI)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.43763 -0.15127 -0.01163  0.08489  0.90853 

Coefficients:
                   Estimate Std. Error t value Pr(>|t|)    
NIKKEI_CloseToOpen  0.18780    0.05229   3.591 0.000671 ***
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

Residual standard error: 0.2169 on 59 degrees of freedom
Multiple R-squared:  0.1794,    Adjusted R-squared:  0.1655 
F-statistic:  12.9 on 1 and 59 DF,  p-value: 0.0006713


-----------------------------------------------------------------------------

    Durbin-Watson test

data:  OLS_Model_no_intercept
DW = 2.2437, p-value = 0.8675
alternative hypothesis: true autocorrelation is greater than 0


-----------------------------------------------------------------------------

    One-sample Kolmogorov-Smirnov test

data:  ResidualsOLS_no_intercept
D = 0.13137, p-value = 0.2306
alternative hypothesis: two-sided


-----------------------------------------------------------------------------
                        2.5 %   97.5 %
NIKKEI_CloseToOpen 0.08315798 0.292438

-----------------------------------------------------------------------------

    Box-Ljung test

data:  ResidualsOLS_no_intercept
X-squared = 14.576, df = 10, p-value = 0.1483

一般化最小二乗法

# 切片項 ≠ 0

Analysis period: 2019-06-19 ~ 2019-09-12,60days

Generalized least squares fit by REML
  Model: USDJPY_CloseToOpen ~ NIKKEI_CloseToOpen 
  Data: USDJPY_NIKKEI 
      AIC      BIC  logLik
  1.04558 7.226909 2.47721

Coefficients:
                         Value  Std.Error   t-value p-value
(Intercept)        -0.01193852 0.02892302 -0.412769  0.6813
NIKKEI_CloseToOpen  0.19273010 0.05400404  3.568809  0.0007

 Correlation: 
                   (Intr)
NIKKEI_CloseToOpen -0.221

Standardized residuals:
         Min           Q1          Med           Q3          Max 
-1.953129658 -0.643972723  0.007446421  0.438210047  4.220144536 

Residual standard error: 0.218484 
Degrees of freedom: 60 total; 58 residual

-----------------------------------------------------------------------------

    One-sample Kolmogorov-Smirnov test

data:  ResidualsGLS
D = 0.11844, p-value = 0.3419
alternative hypothesis: two-sided


-----------------------------------------------------------------------------
                         2.5 %     97.5 %
(Intercept)        -0.06862659 0.04474955
NIKKEI_CloseToOpen  0.08688412 0.29857608

-----------------------------------------------------------------------------

    Box-Ljung test

data:  ResidualsGLS
X-squared = 14.408, df = 10, p-value = 0.1552
# 切片項 = 0

Analysis period: 2019-06-19 ~ 2019-09-12,60days

Generalized least squares fit by REML
  Model: USDJPY_CloseToOpen ~ NIKKEI_CloseToOpen - 1 
  Data: USDJPY_NIKKEI 
        AIC      BIC   logLik
  -6.448552 -0.21594 6.224276

Correlation Structure: ARMA(0,1)
 Formula: ~1 
 Parameter estimate(s):
    Theta1 
-0.2756409 

Coefficients:
                       Value  Std.Error  t-value p-value
NIKKEI_CloseToOpen 0.1770026 0.05169618 3.423901  0.0011

Standardized residuals:
        Min          Q1         Med          Q3         Max 
-1.97552320 -0.67286476 -0.05691899  0.38467445  4.10721379 

Residual standard error: 0.2203708 
Degrees of freedom: 60 total; 59 residual

-----------------------------------------------------------------------------

    One-sample Kolmogorov-Smirnov test

data:  ResidualsGLS_no_intercept
D = 0.11799, p-value = 0.3464
alternative hypothesis: two-sided


-----------------------------------------------------------------------------
                        2.5 %    97.5 %
NIKKEI_CloseToOpen 0.07567995 0.2783252

-----------------------------------------------------------------------------

    Box-Ljung test

data:  ResidualsGLS_no_intercept
X-squared = 14.938, df = 10, p-value = 0.1343

散布図・QQプロット・残差の時系列推移
  • (注意)線形回帰の傾き(\(a\))、切片(\(b\))それぞれの検定統計量、p値に関わらず\(y=ax+b\)とした回帰直線やその残差を散布図、QQプロット等にプロットしています。
  • 切片項\(\neq0\)


  • 切片項\(=0\)


  • 残差の自己相関