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 Hells Gate and Wai Ora Spa.
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.
Hells Gate and Wai Ora Spa
Valid Reviews
139 Valid Reviews
The Hells Gate and Wai Ora Spa experience has a total of 145 reviews. There are 139 valid reviews that are included when calculating the ranking score and 6 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 139 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 14 |
|
10% |
| 9/10 | 15 |
|
11% |
| 8/10 | 32 |
|
23% |
| 7/10 | 30 |
|
22% |
| 6/10 | 13 |
|
9% |
| 5/10 | 15 |
|
11% |
| 4/10 | 4 |
|
3% |
| 3/10 | 10 |
|
7% |
| 2/10 | 5 |
|
4% |
| 1/10 | 1 |
|
1% |
68.42% Average
The raw data average (mean) for all the Hells Gate and Wai Ora Spa valid reviews is 68.42% and is based on 139 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
119 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 139 valid reviews, the experience has 119 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 119 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 10 |
|
8% |
| 9/10 | 13 |
|
11% |
| 8/10 | 30 |
|
25% |
| 7/10 | 28 |
|
24% |
| 6/10 | 11 |
|
9% |
| 5/10 | 12 |
|
10% |
| 4/10 | 3 |
|
3% |
| 3/10 | 7 |
|
6% |
| 2/10 | 4 |
|
3% |
| 1/10 | 1 |
|
1% |
68.99% Average
The raw data average (mean) for all the Hells Gate and Wai Ora Spa face-to-face reviews is 68.99% and is based on 119 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
71.84%
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 |
|---|---|---|---|
| Melissa S | 2/10 | 2207 days | 54% |
| Inez Cavallaro | 6/10 | 2268 days | 100% |
| John Farley | 10/10 | 2869 days | 83% |
| Frank Fabian | 8/10 | 2920 days | 78% |
| Les Hendy | 8/10 | 2946 days | 77% |
| Lea Celerier | 8/10 | 2947 days | 77% |
| Jane Scott | 9/10 | 2997 days | 75% |
| Michelle Smit | 8/10 | 3059 days | 71% |
| Jan Berendsen | 5/10 | 3155 days | 51% |
| Chandra Macraigne | 6/10 | 3190 days | 56% |
| Nanna Torp | 3/10 | 3192 days | 35% |
| Karel | 7/10 | 3929 days | 22% |
| Dick Kooij | 7/10 | 4350 days | 0% |
| Huw Davies | 8/10 | 4618 days | 26% |
| Goran Backlund | 7/10 | 4628 days | 25% |
| Marc Schmiedily | 3/10 | 4629 days | 14% |
| Martin Beuker | 8/10 | 4649 days | 26% |
| Richard Harvey | 8/10 | 4652 days | 26% |
| Mark Bogton | 5/10 | 4652 days | 20% |
| Thomas | 5/10 | 4654 days | 20% |
| Kimberley Mills | 8/10 | 4659 days | 26% |
| Scott Simpson | 5/10 | 4660 days | 20% |
| Luis Valenzuela | 5/10 | 4665 days | 20% |
| Petra | 8/10 | 4667 days | 26% |
| David Blundell | 7/10 | 4667 days | 25% |
| Lucie Rutherfurd | 9/10 | 4670 days | 27% |
| Peter W. | 3/10 | 4734 days | 14% |
| Steve Neilson | 8/10 | 4741 days | 26% |
| Erik Folkersen | 4/10 | 4748 days | 17% |
| Mark de Boer | 8/10 | 4754 days | 26% |
| Tina | 9/10 | 4764 days | 27% |
| Jacquimd13 | 10/10 | 4887 days | 27% |
| Natascha Rachel | 7/10 | 4954 days | 25% |
| A Jones | 9/10 | 4981 days | 27% |
| Walker | 5/10 | 4981 days | 20% |
| Lindsey Clough | 2/10 | 4987 days | 11% |
| Natalie Maguire | 5/10 | 4992 days | 20% |
| Andreas Rath | 6/10 | 4994 days | 23% |
| Peter & Angela Brown | 10/10 | 4999 days | 27% |
| Chris Ashton | 7/10 | 5003 days | 25% |
| Kees Stigter | 7/10 | 5005 days | 25% |
| Diete Rokosch | 9/10 | 5010 days | 27% |
| Brian | 10/10 | 5012 days | 27% |
| Ronald Lippett | 8/10 | 5014 days | 26% |
| Ines | 8/10 | 5024 days | 26% |
| Julian Seizinger | 2/10 | 5024 days | 11% |
| Ann Thompson | 9/10 | 5025 days | 27% |
| Luise Jaeger | 10/10 | 5027 days | 27% |
| Eva Stauderova | 6/10 | 5028 days | 23% |
| Marianne Astorp | 8/10 | 5028 days | 26% |
| Henrik Petersen | 7/10 | 5030 days | 25% |
| Michael Eck | 8/10 | 5030 days | 26% |
| Lili | 8/10 | 5030 days | 26% |
| Florian | 7/10 | 5030 days | 25% |
| willsworthy | 5/10 | 5129 days | 20% |
| craigy | 5/10 | 5221 days | 20% |
| BigSis | 7/10 | 5221 days | 25% |
| Russ Turner | 2/10 | 5360 days | 11% |
| Andy | 6/10 | 5364 days | 23% |
| Michael Egli | 9/10 | 5365 days | 27% |
| Alan & Lorna | 3/10 | 5367 days | 14% |
| Venot | 7/10 | 5377 days | 25% |
| Roger Trusedale | 5/10 | 5384 days | 20% |
| David Rich | 6/10 | 5387 days | 23% |
| Mathias Skov | 4/10 | 5388 days | 17% |
| Nikki Wood | 6/10 | 5396 days | 23% |
| Mike Kirchner | 2/10 | 5398 days | 11% |
| Wolfgang G | 10/10 | 5408 days | 27% |
| Bo Moenstead | 8/10 | 5411 days | 26% |
| cees juffermans | 8/10 | 5415 days | 26% |
| Camenzind | 7/10 | 5422 days | 25% |
| Angela Stringer | 4/10 | 5433 days | 17% |
| blokzyl | 8/10 | 5453 days | 26% |
| aages | 9/10 | 5457 days | 27% |
| Emma Coltman | 5/10 | 5466 days | 20% |
| Helen Pet | 9/10 | 5472 days | 27% |
| nancyburns | 7/10 | 5494 days | 25% |
| Von | 5/10 | 5494 days | 20% |
| rita | 7/10 | 5573 days | 25% |
| Jess Thompson | 10/10 | 5586 days | 27% |
| Boxa Smith | 10/10 | 5586 days | 27% |
| LowerD | 9/10 | 5702 days | 27% |
| Sofie | 8/10 | 5708 days | 26% |
| Arjan Muis | 7/10 | 5710 days | 25% |
| Marion | 10/10 | 5712 days | 27% |
| Kim | 6/10 | 5712 days | 23% |
| MichaelS1 | 3/10 | 5724 days | 14% |
| ClodaghM | 8/10 | 5725 days | 26% |
| Andrew Wilson | 9/10 | 5725 days | 27% |
| FiensG | 8/10 | 5727 days | 26% |
| Joel | 7/10 | 5728 days | 25% |
| Robert | 4/10 | 5731 days | 17% |
| Chris | 8/10 | 5732 days | 26% |
| JuliaG1 | 7/10 | 5741 days | 25% |
| DavidMurray | 7/10 | 5742 days | 25% |
| AndrewF78 | 6/10 | 5744 days | 23% |
| Sarah | 8/10 | 5744 days | 26% |
| Carmel | 7/10 | 5748 days | 25% |
| marcusr | 7/10 | 5749 days | 25% |
| BethanD | 9/10 | 5755 days | 27% |
| ClaudiaK | 1/10 | 5757 days | 10% |
| Miguel | 3/10 | 5758 days | 14% |
| Ko | 8/10 | 5772 days | 26% |
| Nienhaus | 7/10 | 5775 days | 25% |
| Kern | 3/10 | 5792 days | 14% |
| Stephanie | 9/10 | 5808 days | 27% |
| Miha | 10/10 | 5812 days | 27% |
| Jacinta | 3/10 | 5838 days | 14% |
| Lara | 7/10 | 5885 days | 25% |
| Katie | 7/10 | 5903 days | 25% |
| Daniela Bell | 10/10 | 5914 days | 27% |
| Jenny | 7/10 | 5918 days | 25% |
| maria d | 10/10 | 5950 days | 27% |
| fgregory | 3/10 | 5970 days | 14% |
| woodolly | 3/10 | 6051 days | 14% |
| Christian | 6/10 | 6095 days | 23% |
| Alexandra Vogeli | 8/10 | 6095 days | 26% |
| Richard Steward | 9/10 | 6105 days | 27% |
| boukje | 8/10 | 6108 days | 26% |
| Stephanie | 10/10 | 6120 days | 27% |
| Carla | 8/10 | 6120 days | 26% |
| Melissa Steedman | 7/10 | 6147 days | 25% |
| Vanessa Brennan | 5/10 | 6147 days | 20% |
| Maria | 8/10 | 6151 days | 26% |
| Gerber Liselotte | 7/10 | 6182 days | 25% |
| Manuel | 5/10 | 6197 days | 20% |
| Tom Clements | 6/10 | 6198 days | 23% |
| Sally Walker | 9/10 | 6225 days | 27% |
| Bridgy | 10/10 | 6398 days | 27% |
| andrew julie | 8/10 | 6432 days | 26% |
| Bas Marieke | 8/10 | 6449 days | 26% |
| Richhouse | 8/10 | 6454 days | 26% |
| Dennis | 7/10 | 6455 days | 25% |
| Rietveld | 6/10 | 6466 days | 23% |
| Susanne | 5/10 | 6471 days | 20% |
| Lucy | 7/10 | 6471 days | 25% |
| Ralph | 7/10 | 6473 days | 25% |
| Nissa | 7/10 | 6473 days | 25% |
| Ash Sturm | 6/10 | 6590 days | 23% |
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 Hells Gate and Wai Ora Spa experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-4.02% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 44 days. However the Hells Gate and Wai Ora Spa 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 Hells Gate and Wai Ora Spa experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -3.96% |
| 198 | -3.98% |
| 199 | -4.00% |
| 200 | -4.02% |
| 201 | -4.04% |
| 202 | -4.06% |
| 203 | -4.08% |
| … | … |
Balancing Adjustment
8.30% 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
76%
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.