Hi, thanks for your interest in how we calculate an experience's ranking score. It's at the core of Rankers so I'm pleased you're curious.
The ranking score percentage is used to compare and sort experiences in ranking tables. It is not necessarily a direct measurement of the quality of a particular experience as rated by its customers. I've found it a useful tool to allow me to find the best experiences with confidence. But I've also found it important to read the customer reviews before making any final judgements!
We calculate an experience's ranking score using a multi-factor data model instead of a raw data average (mean). This model takes into account several important questions. For instance - is there a trusted body of reviews? What is the age of a review and is the review from a credible source?
Below you'll find details around some of the important factors that went into calculating the ranking score for TSS Earnslaw Cruise.
If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz. We don't believe this is perfect or complete so we're always interested in ways we might make improvements.
TSS Earnslaw Cruise
Valid Reviews
80 Valid Reviews
The TSS Earnslaw Cruise experience has a total of 80 valid reviews. There are no invalid reviews that are excluded from the calculation. Reviews can be excluded only when a reviewer is not verified or after an investigation by our team determines the reviewer is not genuine.
Below is the distribution of ratings for the 80 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 27 |
|
34% |
| 9/10 | 27 |
|
34% |
| 8/10 | 15 |
|
19% |
| 7/10 | 8 |
|
10% |
| 6/10 | 0 |
|
0% |
| 5/10 | 1 |
|
1% |
| 4/10 | 2 |
|
3% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
87.75% Average
The raw data average (mean) for all the TSS Earnslaw Cruise valid reviews is 87.75% and is based on 80 valid reviews. This value is not used to calculate the ranking score and it only provided here as a comparison to the weighted average.
Face-to-Face Reviews
62 Face-to-Face Reviews
The Rankers team meets with travellers while they’re in New Zealand and conducts face-to-face surveys. These reviews, in our opinion, are the most trusted in the industry and represent a critical control sample. To our knowledge, we are the only travel review website in the world that has gone to this extent.
More about face-to-face reviews
Within the 80 valid reviews, the experience has 62 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 62 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 17 |
|
27% |
| 9/10 | 23 |
|
37% |
| 8/10 | 13 |
|
21% |
| 7/10 | 8 |
|
13% |
| 6/10 | 0 |
|
0% |
| 5/10 | 0 |
|
0% |
| 4/10 | 1 |
|
2% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
87.26% Average
The raw data average (mean) for all the TSS Earnslaw Cruise face-to-face reviews is 87.26% and is based on 62 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
88.95%
Rankers calculates a weighted mean as a base average on which we can improve. Individual review's ratings are given a weight based on several factors. The weight of a review determines the overall impact it'll have on the final weighted average.
Recent reviews have more weight as they are more relevant and reflect the experience as it currently operates. Over time reviews become less relevant and loose their impact on the ranking score.
Low rating reviews carry slightly less weight. This dampens the effect of very low ratings for every experience across the board. This is especially important when the experience has few reviews overall and a single negative rating can grossly mischaracterise an experience. Consistent poor reviews will still result in the experience receiving a comparitively low ranking score.
Credible sources provide reviews that can be trusted. If we have verified a reviewer is genuine via a face-to-face meeting then the review carries additional weight.
| Reviewer | Rating | Age | Relative Weight |
|---|---|---|---|
| Vicki Hoskinson | 10/10 | 2587 days | 100% |
| Lisa Peric | 9/10 | 2831 days | 83% |
| Emma Philpott | 9/10 | 3304 days | 53% |
| Chris | 9/10 | 3728 days | 26% |
| Rachel S | 4/10 | 4017 days | 0% |
| Mark and Kim Vincent | 9/10 | 4110 days | 2% |
| Ian Stanbury | 10/10 | 4414 days | 18% |
| Colin Billington | 4/10 | 4436 days | 6% |
| GN100 | 9/10 | 4440 days | 17% |
| Michael Nolan | 8/10 | 4807 days | 17% |
| Mike Edwards | 8/10 | 4854 days | 17% |
| Jurgen | 8/10 | 4879 days | 17% |
| David | 5/10 | 4899 days | 10% |
| sandytemp22 | 10/10 | 5113 days | 18% |
| Lucy Duffy | 10/10 | 5147 days | 18% |
| Ian Bailey | 9/10 | 5153 days | 17% |
| Hayley Atkinson | 10/10 | 5155 days | 18% |
| Lyn Deavin | 7/10 | 5156 days | 15% |
| Inge Davbbert | 10/10 | 5156 days | 18% |
| Tom Connis | 10/10 | 5172 days | 18% |
| qofd | 10/10 | 5449 days | 18% |
| AJ van Pelt | 8/10 | 5487 days | 17% |
| Julie | 10/10 | 5492 days | 18% |
| Malcolm McLean | 7/10 | 5500 days | 15% |
| Rob Hitsert | 9/10 | 5502 days | 17% |
| Stephen Shearer | 10/10 | 5507 days | 18% |
| Alice Galley | 9/10 | 5513 days | 17% |
| Van den Borne | 7/10 | 5524 days | 15% |
| Bahner | 9/10 | 5526 days | 17% |
| Robert Cox | 8/10 | 5529 days | 17% |
| Wijnhoven | 9/10 | 5535 days | 17% |
| Rosey834 | 9/10 | 5600 days | 17% |
| aggiemary04 | 10/10 | 5661 days | 18% |
| animal_end | 10/10 | 5814 days | 18% |
| nuwee | 10/10 | 5844 days | 18% |
| Russ Turner | 10/10 | 5861 days | 18% |
| Brian Morris | 9/10 | 5884 days | 17% |
| Gordon and Joyce | 10/10 | 5885 days | 18% |
| th schuermann | 10/10 | 5885 days | 18% |
| Tony X | 8/10 | 5898 days | 17% |
| R Gilge | 10/10 | 5899 days | 18% |
| Ake Erlandsson | 8/10 | 5899 days | 17% |
| Paul | 9/10 | 5899 days | 17% |
| Luternauer | 9/10 | 5902 days | 17% |
| Kevin and Teresa | 8/10 | 5903 days | 17% |
| Omar Frenchy | 9/10 | 5912 days | 17% |
| stevnba | 7/10 | 5950 days | 15% |
| Gebert | 9/10 | 5976 days | 17% |
| Casarotti Luana | 10/10 | 5977 days | 18% |
| TomL | 8/10 | 5995 days | 17% |
| nickm | 10/10 | 6164 days | 18% |
| Dirk | 9/10 | 6208 days | 17% |
| Eckhard Koepper | 9/10 | 6221 days | 17% |
| Hans | 10/10 | 6226 days | 18% |
| Trevor | 10/10 | 6252 days | 18% |
| Yunker | 10/10 | 6257 days | 18% |
| john west | 7/10 | 6277 days | 15% |
| HollyB | 10/10 | 6391 days | 18% |
| suedavies | 10/10 | 6392 days | 18% |
| Zane | 10/10 | 6395 days | 18% |
| Astrid Snippe | 8/10 | 6551 days | 17% |
| James Gibbs | 7/10 | 6551 days | 15% |
| Anke Bohrer | 10/10 | 6555 days | 18% |
| Judy Williamson | 9/10 | 6556 days | 17% |
| Toni Keown | 9/10 | 6564 days | 17% |
| Jennifer Baulch | 9/10 | 6585 days | 17% |
| Linda and Peter | 8/10 | 6588 days | 17% |
| Ria | 9/10 | 6596 days | 17% |
| Andreas Brett | 8/10 | 6602 days | 17% |
| Lisa Tame | 8/10 | 6610 days | 17% |
| Charles Price | 9/10 | 6613 days | 17% |
| Cole Penelope | 10/10 | 6613 days | 18% |
| Roger & Margaret | 8/10 | 6623 days | 17% |
| Bronwyn Gaby | 9/10 | 6655 days | 17% |
| Sue | 7/10 | 6927 days | 15% |
| sven | 9/10 | 6934 days | 17% |
| Schranger | 8/10 | 6946 days | 17% |
| Roy | 9/10 | 6956 days | 17% |
| beesom | 7/10 | 6975 days | 15% |
| pfiffner | 9/10 | 6991 days | 17% |
Adjustments
Several adjustments to the weighted average are added to improve relevancy and credibility. These adjustments apply equally to all experiences that meet the criteria.
Sample Size Adjustment
No Adjustment
A reasonable number of reviews are necessary in order for the average to be credible and for an experience to take a prime position within the ranking tables. As such, experiences with only a few reviews have a moderated score. This does not mean that the experience or the reviews can't be trusted. The TSS Earnslaw Cruise experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-3.74% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 60 days. However the TSS Earnslaw Cruise experience does not meet the criteria for any adjustment.
In addition, an experience's ranking score may be adjusted for each day there is no new ranking. After 1 day the adjustment comes into effect. The maximum number of days that can be adjusted for is 200 days. Due to the seasonal nature of many businesses, this adjustment is applied dynamically throughout the year.
The TSS Earnslaw Cruise experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -3.68% |
| 198 | -3.70% |
| 199 | -3.72% |
| 200 | -3.74% |
| 201 | -3.76% |
| 202 | -3.77% |
| 203 | -3.79% |
| … | … |
Balancing Adjustment
1.78% Adjustment
Every experience's review score is adjusted to balance out the disproportional number of negative reviews that are contributed.
You won't be surprised to learn that disgruntled customers are more likely to leave a review than happy ones. They are motivated to share their experience and warn others. We consider this a good thing and it's why reading the reviews is important. However we've learned it can misrepresent the experience in a more overall sense.
We apply a balancing adjustment to counteract this effect and ensure the ranking score is a more fair representation of the experience. This adjustment is applied equally to all experiences.
Final Ranking Score
87%
The final ranking score once any adjustments, ratings, and rounding has been applied. This value is recalculated each day and a short rolling average is applied. Therefore it may not be precisely accurate based on the other values presented.