G'day, 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 Akaroa Harbour Nature Cruises.
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.
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Akaroa Harbour Nature Cruises
Valid Reviews
58 Valid Reviews
The Akaroa Harbour Nature Cruises experience has a total of 58 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 58 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 14 |
|
24% |
| 9/10 | 19 |
|
33% |
| 8/10 | 14 |
|
24% |
| 7/10 | 6 |
|
10% |
| 6/10 | 0 |
|
0% |
| 5/10 | 2 |
|
3% |
| 4/10 | 1 |
|
2% |
| 3/10 | 1 |
|
2% |
| 2/10 | 0 |
|
0% |
| 1/10 | 1 |
|
2% |
83.28% Average
The raw data average (mean) for all the Akaroa Harbour Nature Cruises valid reviews is 83.28% and is based on 58 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
48 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 58 valid reviews, the experience has 48 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 48 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 8 |
|
17% |
| 9/10 | 17 |
|
35% |
| 8/10 | 14 |
|
29% |
| 7/10 | 6 |
|
13% |
| 6/10 | 0 |
|
0% |
| 5/10 | 1 |
|
2% |
| 4/10 | 1 |
|
2% |
| 3/10 | 1 |
|
2% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
83.13% Average
The raw data average (mean) for all the Akaroa Harbour Nature Cruises face-to-face reviews is 83.13% and is based on 48 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
91.03%
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 |
|---|---|---|---|
| Sabrina Saunders | 10/10 | 1151 days | 100% |
| Stefano Clerici | 10/10 | 2462 days | 11% |
| Sue Milne | 10/10 | 2953 days | 8% |
| Fran and Ben | 10/10 | 2964 days | 8% |
| Patricia | 8/10 | 3290 days | 6% |
| Ceri Eaton | 9/10 | 3319 days | 5% |
| Thomas Zilio | 4/10 | 4062 days | 0% |
| JoMary Smith | 9/10 | 4104 days | 0% |
| Marco Schmidt | 10/10 | 4389 days | 2% |
| Christian Schumacher | 10/10 | 4389 days | 2% |
| Karin Genyn | 10/10 | 4486 days | 2% |
| N Zitscher | 5/10 | 4503 days | 1% |
| Peter Harden | 9/10 | 4505 days | 2% |
| Jenny McTigue | 8/10 | 4785 days | 2% |
| Mike & Jennie | 8/10 | 4786 days | 2% |
| Stefes Wencke | 10/10 | 4788 days | 2% |
| Johan Kroese | 9/10 | 4815 days | 2% |
| Herbert | 8/10 | 4817 days | 2% |
| Michael | 9/10 | 5124 days | 2% |
| Richard Dudfield | 10/10 | 5127 days | 2% |
| Louise van der Hyden | 9/10 | 5139 days | 2% |
| elmoandjoey | 10/10 | 5231 days | 2% |
| Tim | 10/10 | 5261 days | 2% |
| Conny | 9/10 | 5440 days | 2% |
| Victoria Slater | 7/10 | 5480 days | 2% |
| Risch & Seybold | 9/10 | 5488 days | 2% |
| Schumacher | 9/10 | 5493 days | 2% |
| Greg Kennedy | 9/10 | 5553 days | 2% |
| csziegler | 10/10 | 5580 days | 2% |
| stephenb | 8/10 | 5590 days | 2% |
| carsteng | 7/10 | 5590 days | 2% |
| Kathrin Thomas | 9/10 | 5608 days | 2% |
| james masura | 10/10 | 5626 days | 2% |
| Steve Drake | 1/10 | 5687 days | 0% |
| Andrea | 7/10 | 5760 days | 2% |
| stephen | 9/10 | 5842 days | 2% |
| NatasjaV | 8/10 | 5858 days | 2% |
| JimmyK | 8/10 | 5858 days | 2% |
| JohannaB | 7/10 | 5859 days | 2% |
| Peter Bowen-Simpkins | 9/10 | 5860 days | 2% |
| eatc | 9/10 | 5871 days | 2% |
| Daniel | 3/10 | 5877 days | 0% |
| schenk | 8/10 | 5891 days | 2% |
| groenewold | 8/10 | 5905 days | 2% |
| Karen | 8/10 | 5911 days | 2% |
| Ducolq | 7/10 | 5912 days | 2% |
| Rebekka | 5/10 | 5912 days | 1% |
| Mary Hamilton | 10/10 | 6005 days | 2% |
| Esther | 8/10 | 6047 days | 2% |
| Jim Summers | 8/10 | 6089 days | 2% |
| Stewart | 8/10 | 6223 days | 2% |
| angela | 9/10 | 6223 days | 2% |
| Bauer | 7/10 | 6238 days | 2% |
| Kenneth and Mette | 8/10 | 6240 days | 2% |
| Knol | 9/10 | 6241 days | 2% |
| Dorris Schwarz | 9/10 | 6286 days | 2% |
| Eleanor Adams | 9/10 | 6332 days | 2% |
| Fred | 9/10 | 6570 days | 2% |
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 Akaroa Harbour Nature Cruises experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-3.81% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 59 days. However the Akaroa Harbour Nature Cruises 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 Akaroa Harbour Nature Cruises experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -3.75% |
| 198 | -3.77% |
| 199 | -3.79% |
| 200 | -3.81% |
| 201 | -3.82% |
| 202 | -3.84% |
| 203 | -3.86% |
| … | … |
Balancing Adjustment
1.42% 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
89%
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.