Coin catalogue section: |
Holmoi |

Coin corpus datasets: |
Holmoi, Group 1, Holmoi, Group 2 |

Remark: |
The third staters are represented by a single specimen in Group 1 (Type 1.2) weighing 2.96 g. Only obols and hemiobols are analysed on this page. |

Table 1 provides the descriptive statistics of individual types (Std. Dev. denotes the standard deviation and IQR the interquartile range). Type 1.3 is represented by a single specimen weighing 0.68 g.

Statistics | obols | hemiobols | ||
---|---|---|---|---|

Type 1.3 | Type 2.2 | Type 2.3 | Type 2.4 | |

Number of coins: |
1 | 45 | 7 | 3 |

Mean: |
0.68 | 0.65 | 0.65 | 0.30 |

Standard deviation: |
0.00 | 0.07 | 0.02 | 0.06 |

Interquartile range: |
0.00 | 0.11 | 0.03 | 0.08 |

Skewness: |
NaN | 0.18 | 1.06 | 0.68 |

Kurtosis: |
NaN | 2.48 | 2.69 | 1.50 |

Minimum: |
0.68 | 0.49 | 0.64 | 0.26 |

25th percentile: |
0.68 | 0.60 | 0.64 | 0.26 |

Median: |
0.68 | 0.66 | 0.65 | 0.27 |

75th percentile: |
0.68 | 0.71 | 0.67 | 0.34 |

Maximum: |
0.68 | 0.81 | 0.69 | 0.36 |

**Table 1:** Descriptive statistics of obols and hemiobols

Box plots1 of individual coin types are presented in Figure 1. Figure 2 presents the relative frequency histograms. The bars represent the relative frequencies from 0.25 to 0.85 g in increments of 0.05 g and the weight of the only known obol of Type 1.3 is represented by the purple circle on the horizontal axis. Cumulative distributions excluding this single representative of Type 1.3 are shown in Fig. 3.

**Figure 1: **Box plots of obols and hemiobols

**Figure 2: **Relative frequency histograms of obols and hemiobols

**Figure 3: **Cumulative distributions of obols and hemiobols

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.

5 August 2023 – 16 January 2024