Sample description and overall descriptive statistics
| No. of reviews in the analysis | Minimum | Maximum | Mean | Std deviation | |
|---|---|---|---|---|---|
| General information about the reviews and products | |||||
| Rating | 4,311 | 1 | 5 | 3.87 | 1.503 |
| Number of words | 4,311 | 1 | 1,235 | 86.61 | 113.723 |
| Average product price ($) | 4,311 | 22.99 | 3281.57 | 337.19 | 563.34 |
| Helpful votes (number) | 4,311 | 0 | 787 | 3.79 | 21.431 |
| Sentiment of the entire review | |||||
| BING | 4,311 | −20 | 28 | 2.28 | 3.341 |
| NRC | 4,311 | −8 | 23 | 1.70 | 2.837 |
| AFINN | 4,311 | −24 | 50 | 4.67 | 6.056 |
| Liu | 4,311 | −31 | 46 | 2.75 | 4.322 |
| Average sentiment per word in the review | |||||
| BING_N | 4,311 | −0.50 | 1.00 | 0.0801 | 0.15279 |
| AFINN_N | 4,311 | −1.00 | 4.00 | 0.1742 | 0.38063 |
| NRC_N | 4,311 | −0.50 | 1.00 | 0.0417 | 0.09976 |
| LIU_N | 4,311 | −0.50 | 1.00 | 0.0843 | 0.15342 |
| No. of reviews in the analysis | Minimum | Maximum | Mean | Std deviation | |
|---|---|---|---|---|---|
| Rating | 4,311 | 1 | 5 | 3.87 | 1.503 |
| Number of words | 4,311 | 1 | 1,235 | 86.61 | 113.723 |
| Average product price ($) | 4,311 | 22.99 | 3281.57 | 337.19 | 563.34 |
| Helpful votes (number) | 4,311 | 0 | 787 | 3.79 | 21.431 |
| BING | 4,311 | −20 | 28 | 2.28 | 3.341 |
| NRC | 4,311 | −8 | 23 | 1.70 | 2.837 |
| AFINN | 4,311 | −24 | 50 | 4.67 | 6.056 |
| Liu | 4,311 | −31 | 46 | 2.75 | 4.322 |
| BING_N | 4,311 | −0.50 | 1.00 | 0.0801 | 0.15279 |
| AFINN_N | 4,311 | −1.00 | 4.00 | 0.1742 | 0.38063 |
| NRC_N | 4,311 | −0.50 | 1.00 | 0.0417 | 0.09976 |
| LIU_N | 4,311 | −0.50 | 1.00 | 0.0843 | 0.15342 |
Note(s): BING, NRC, AFINN, LIU refer to sentiment values relying on a specific methodology (e.g. AFINN methodology). BING_N is sentiment value per word and similarly holds for other sentiment calculation methods, with _N denoting calculation per word
Source(s): Authors’ own