Kia ora, 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 Day in the Bay Scenic 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.
Day in the Bay Scenic Cruise
Valid Reviews
50 Valid Reviews
The Day in the Bay Scenic Cruise experience has a total of 51 reviews. There are 50 valid reviews that are included when calculating the ranking score and 1 invalid review 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 50 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 2 |
|
4% |
| 9/10 | 12 |
|
24% |
| 8/10 | 11 |
|
22% |
| 7/10 | 12 |
|
24% |
| 6/10 | 5 |
|
10% |
| 5/10 | 6 |
|
12% |
| 4/10 | 1 |
|
2% |
| 3/10 | 1 |
|
2% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
73.40% Average
The raw data average (mean) for all the Day in the Bay Scenic Cruise valid reviews is 73.40% and is based on 50 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
46 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 50 valid reviews, the experience has 46 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 46 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 2 |
|
4% |
| 9/10 | 11 |
|
24% |
| 8/10 | 10 |
|
22% |
| 7/10 | 12 |
|
26% |
| 6/10 | 4 |
|
9% |
| 5/10 | 5 |
|
11% |
| 4/10 | 1 |
|
2% |
| 3/10 | 1 |
|
2% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
73.70% Average
The raw data average (mean) for all the Day in the Bay Scenic Cruise face-to-face reviews is 73.70% and is based on 46 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
75.05%
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 |
|---|---|---|---|
| Kati Behrendt | 6/10 | 3448 days | 85% |
| Antonia Ellenrieder | 10/10 | 3470 days | 100% |
| Luca Herzig | 9/10 | 3800 days | 52% |
| Anna-Lisa Funk | 8/10 | 3842 days | 45% |
| Jade Cownley | 9/10 | 4164 days | 0% |
| Jonas Nielsen | 7/10 | 4522 days | 38% |
| Johannes | 8/10 | 4543 days | 41% |
| Anna | 5/10 | 4546 days | 25% |
| Lea Roser | 9/10 | 4867 days | 42% |
| Julian Roots | 9/10 | 4881 days | 42% |
| Stephan Olivier | 8/10 | 4975 days | 41% |
| Stephan Olivier | 8/10 | 4975 days | 41% |
| Adam Hassan | 7/10 | 4976 days | 38% |
| Gerard van de Ven | 8/10 | 4976 days | 41% |
| Trevor & Sheila Redman | 10/10 | 5251 days | 43% |
| Graham Platt | 8/10 | 5255 days | 41% |
| Meagan Bradder | 7/10 | 5320 days | 38% |
| Nick Selzler | 7/10 | 5320 days | 38% |
| S Tucker | 7/10 | 5326 days | 38% |
| Fabienne Indergand | 9/10 | 5341 days | 42% |
| Sillmann | 9/10 | 5343 days | 42% |
| Jack van den Nieuwendyk | 6/10 | 5348 days | 33% |
| Noah Stegmann | 6/10 | 5592 days | 33% |
| Gillian Powell | 8/10 | 5613 days | 41% |
| Sanne | 6/10 | 5616 days | 33% |
| Pieter | 3/10 | 5617 days | 9% |
| Jorgen vahl Rasmussen | 9/10 | 5633 days | 42% |
| Christy | 8/10 | 6077 days | 41% |
| elisabethk | 9/10 | 6196 days | 42% |
| Lars | 7/10 | 6327 days | 38% |
| Nick | 9/10 | 6327 days | 42% |
| Otto | 5/10 | 6330 days | 25% |
| Ella | 5/10 | 6333 days | 25% |
| Ed | 5/10 | 6333 days | 25% |
| Joosten | 8/10 | 6342 days | 41% |
| IM | 5/10 | 6342 days | 25% |
| Jows | 9/10 | 6342 days | 42% |
| Rick Rissewijck | 5/10 | 6350 days | 25% |
| KonterR | 7/10 | 6352 days | 38% |
| Rona | 4/10 | 6362 days | 17% |
| Thamar | 7/10 | 6368 days | 38% |
| Jordi | 6/10 | 6431 days | 33% |
| Gayle | 8/10 | 6468 days | 41% |
| Clare | 7/10 | 6478 days | 38% |
| AlanN316 | 8/10 | 6692 days | 41% |
| Stephen | 7/10 | 6702 days | 38% |
| Amanda | 9/10 | 6709 days | 42% |
| Stuart Weavers | 7/10 | 6788 days | 38% |
| Denise Nick | 7/10 | 7050 days | 38% |
| Liz | 9/10 | 7089 days | 42% |
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 Day in the Bay Scenic Cruise experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-2.00% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 125 days. However the Day in the Bay Scenic 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 Day in the Bay Scenic Cruise experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -1.97% |
| 198 | -1.98% |
| 199 | -1.99% |
| 200 | -2.00% |
| 201 | -2.01% |
| 202 | -2.02% |
| 203 | -2.03% |
| … | … |
Balancing Adjustment
5.46% 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
79%
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.