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Table 1 Descriptive statistics

From: Score-driven currency exchange rate seasonality as applied to the Guatemalan Quetzal/US Dollar

Statistics GTQ/USD \(p_{t}\) GTQ/USD \(\ln (p_{t}/p_{t-1})\) Month Mean \(p_{t}\)
Start date 4th January 1994 4th January 1994 January 7.4087
End date 30th June 2017 30th June 2017 February 7.3819
Sample size 6128 6128 March 7.3590
Minimum 5.4939 \(-\) 0.0199 April 7.3545
Maximum 8.3948 0.0192 May 7.3411
Average 7.3904 0.0000 June 7.3712
Standard deviation 0.7476 0.0017 July 7.3656
Skewness \(-\) 1.2354 0.6494 August 7.3840
Excess kurtosis 0.0049 14.8366 September 7.4312
ADF statistic, constant \(-\) 2.1142 (0.2391) \(-\) 13.6809\(^{***}\) (0.0000) October 7.4501
ADF statistic, constant plus trend \(-\) 0.8073 (0.9637) NA November 7.4298
ADF statistic, constant plus quadratic trend \(-\) 2.2003 (0.7293) NA December 7.4126
  1. GTQ Guatemalan Quetzal, USD United States Dollar, ADF Augmented Dickey–Fuller, NA not available
  2. p values of the ADF test are reported in parentheses
  3. \(^{***}\)Indicates significance at the 1% level