Analyzed coins
| Coin catalogue section: | Holmoi |
| Coin corpus datasets: | Holmoi, Group 1, Holmoi, Group 2 |
The numbers of analysed coins are given in Table 1. Those coins that are listed in the coin corpus without weights or that are marked there as too corroded or damaged are excluded from the analysis. From Group 2, coin no. 1 (Type 2.1a) was excluded from the analysis because its low weight of 8.67 g seems to be significantly affected by corrosion.
| Corpus | Number of coins as of 3 January 2025 | ||
|---|---|---|---|
| Total | Excluded | Analyzed | |
| Holmoi, Group 1, staters | 9 | 9 | |
| Holmoi, Group 2, staters | 7 | 1 | 6 |
Table 1: Numbers of analyzed coins
Analysis
Box plots1 and basic descriptive statistics are presented in Figure 1 and Table 2, respectively. In Group 1, the coin no. 2 (Type 1.1b) is distinguished from other coins by its very low weight of 10.02 g. According to the photograph in the auction catalogue, it appears to be well preserved and without signs of metal degradation.
Figure 1: Box plots
| Statistics | Group 1 | Group 2 |
|---|---|---|
| Number of coins: | 9 | 6 |
| Mean: | 10.55 | 10.04 |
| Standard deviation: | 0.22 | 0.14 |
| Interquartile range: | 0.18 | 0.16 |
| Skewness: | -1.76 | -0.13 |
| Kurtosis: | 5.01 | 1.88 |
| Minimum: | 10.02 | 9.84 |
| 25th percentile: | 10.49 | 9.96 |
| Median: | 10.66 | 10.04 |
| 75th percentile: | 10.66 | 10.12 |
| Maximum: | 10.74 | 10.22 |
Table 2: Descriptive statistics of coin groups
Figure 2 presents the relative frequency histograms. The bars represent the relative frequencies in both groups ranging from 9.80 to 10.80 g in increments of 0.10 g. Cumulative distributions are shown in Figure 3.
Figure 2: Relative frequency histograms
Figure 3: Cumulative distributions
1The bottom and top of each box are the 25th and 75th percentiles of the dataset, respectively (the lower and upper quartiles). Thus, the height of the box corresponds to the interquartile range (IQR). The red line inside the box indicates the median. Whiskers (the dashed lines extending above and below the box) indicate variability outside the upper and lower quartiles. From above the upper quartile, a distance of 1.5 times the IQR is measured out and a whisker is drawn up to the largest observed data point from the dataset that falls within this distance. Similarly, a distance of 1.5 times the IQR is measured out below the lower quartile and a whisker is drawn down to the lowest observed data point from the dataset that falls within this distance. Observations beyond the whisker length are marked as outliers and are represented by small red circles.
4 August 2023 – 3 January 2025