Hey, 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
89.12%
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 | 2471 days | 100% |
| Lisa Peric | 9/10 | 2714 days | 86% |
| Emma Philpott | 9/10 | 3187 days | 61% |
| Chris | 9/10 | 3611 days | 39% |
| Rachel S | 4/10 | 3901 days | 15% |
| Mark and Kim Vincent | 9/10 | 3993 days | 18% |
| Ian Stanbury | 10/10 | 4297 days | 2% |
| Colin Billington | 4/10 | 4319 days | 0% |
| GN100 | 9/10 | 4323 days | 1% |
| Michael Nolan | 8/10 | 4690 days | 25% |
| Mike Edwards | 8/10 | 4737 days | 25% |
| Jurgen | 8/10 | 4762 days | 25% |
| David | 5/10 | 4782 days | 19% |
| sandytemp22 | 10/10 | 4996 days | 25% |
| Lucy Duffy | 10/10 | 5030 days | 25% |
| Ian Bailey | 9/10 | 5036 days | 25% |
| Hayley Atkinson | 10/10 | 5038 days | 25% |
| Lyn Deavin | 7/10 | 5039 days | 23% |
| Inge Davbbert | 10/10 | 5039 days | 25% |
| Tom Connis | 10/10 | 5055 days | 25% |
| qofd | 10/10 | 5332 days | 25% |
| AJ van Pelt | 8/10 | 5370 days | 25% |
| Julie | 10/10 | 5375 days | 25% |
| Malcolm McLean | 7/10 | 5383 days | 23% |
| Rob Hitsert | 9/10 | 5385 days | 25% |
| Stephen Shearer | 10/10 | 5390 days | 25% |
| Alice Galley | 9/10 | 5396 days | 25% |
| Van den Borne | 7/10 | 5407 days | 23% |
| Bahner | 9/10 | 5409 days | 25% |
| Robert Cox | 8/10 | 5412 days | 25% |
| Wijnhoven | 9/10 | 5418 days | 25% |
| Rosey834 | 9/10 | 5483 days | 25% |
| aggiemary04 | 10/10 | 5544 days | 25% |
| animal_end | 10/10 | 5697 days | 25% |
| nuwee | 10/10 | 5727 days | 25% |
| Russ Turner | 10/10 | 5744 days | 25% |
| Brian Morris | 9/10 | 5767 days | 25% |
| Gordon and Joyce | 10/10 | 5768 days | 25% |
| th schuermann | 10/10 | 5768 days | 25% |
| Tony X | 8/10 | 5781 days | 25% |
| R Gilge | 10/10 | 5782 days | 25% |
| Ake Erlandsson | 8/10 | 5782 days | 25% |
| Paul | 9/10 | 5782 days | 25% |
| Luternauer | 9/10 | 5785 days | 25% |
| Kevin and Teresa | 8/10 | 5786 days | 25% |
| Omar Frenchy | 9/10 | 5795 days | 25% |
| stevnba | 7/10 | 5833 days | 23% |
| Gebert | 9/10 | 5859 days | 25% |
| Casarotti Luana | 10/10 | 5860 days | 25% |
| TomL | 8/10 | 5878 days | 25% |
| nickm | 10/10 | 6047 days | 25% |
| Dirk | 9/10 | 6091 days | 25% |
| Eckhard Koepper | 9/10 | 6104 days | 25% |
| Hans | 10/10 | 6109 days | 25% |
| Trevor | 10/10 | 6135 days | 25% |
| Yunker | 10/10 | 6140 days | 25% |
| john west | 7/10 | 6160 days | 23% |
| HollyB | 10/10 | 6274 days | 25% |
| suedavies | 10/10 | 6275 days | 25% |
| Zane | 10/10 | 6278 days | 25% |
| Astrid Snippe | 8/10 | 6434 days | 25% |
| James Gibbs | 7/10 | 6434 days | 23% |
| Anke Bohrer | 10/10 | 6439 days | 25% |
| Judy Williamson | 9/10 | 6440 days | 25% |
| Toni Keown | 9/10 | 6447 days | 25% |
| Jennifer Baulch | 9/10 | 6468 days | 25% |
| Linda and Peter | 8/10 | 6471 days | 25% |
| Ria | 9/10 | 6479 days | 25% |
| Andreas Brett | 8/10 | 6485 days | 25% |
| Lisa Tame | 8/10 | 6493 days | 25% |
| Charles Price | 9/10 | 6496 days | 25% |
| Cole Penelope | 10/10 | 6496 days | 25% |
| Roger & Margaret | 8/10 | 6506 days | 25% |
| Bronwyn Gaby | 9/10 | 6538 days | 25% |
| Sue | 7/10 | 6810 days | 23% |
| sven | 9/10 | 6817 days | 25% |
| Schranger | 8/10 | 6829 days | 25% |
| Roy | 9/10 | 6839 days | 25% |
| beesom | 7/10 | 6858 days | 23% |
| pfiffner | 9/10 | 6874 days | 25% |
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
-4.07% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 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 | -4.01% |
| 198 | -4.03% |
| 199 | -4.05% |
| 200 | -4.07% |
| 201 | -4.09% |
| 202 | -4.11% |
| 203 | -4.13% |
| … | … |
Balancing Adjustment
1.81% 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.