Ranking Score Explained
Hi there, 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
70.01%
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 | 1092 days | 92% |
| Inez Cavallaro | 6/10 | 1153 days | 100% |
| John Farley | 10/10 | 1754 days | 91% |
| Frank Fabian | 8/10 | 1805 days | 85% |
| Les Hendy | 8/10 | 1831 days | 83% |
| Lea Celerier | 8/10 | 1832 days | 83% |
| Jane Scott | 9/10 | 1882 days | 85% |
| Michelle Smit | 8/10 | 1944 days | 78% |
| Jan Berendsen | 5/10 | 2040 days | 63% |
| Chandra Macraigne | 6/10 | 2075 days | 63% |
| Nanna Torp | 3/10 | 2077 days | 58% |
| Karel | 7/10 | 2814 days | 37% |
| Dick Kooij | 7/10 | 3235 days | 18% |
| Huw Davies | 8/10 | 3503 days | 7% |
| Goran Backlund | 7/10 | 3513 days | 6% |
| Marc Schmiedily | 3/10 | 3514 days | 5% |
| Martin Beuker | 8/10 | 3534 days | 5% |
| Richard Harvey | 8/10 | 3537 days | 5% |
| Mark Bogton | 5/10 | 3537 days | 4% |
| Thomas | 5/10 | 3539 days | 4% |
| Kimberley Mills | 8/10 | 3544 days | 5% |
| Scott Simpson | 5/10 | 3545 days | 4% |
| Luis Valenzuela | 5/10 | 3550 days | 4% |
| Petra | 8/10 | 3552 days | 4% |
| David Blundell | 7/10 | 3552 days | 4% |
| Lucie Rutherfurd | 9/10 | 3555 days | 5% |
| Peter W. | 3/10 | 3619 days | 1% |
| Steve Neilson | 8/10 | 3626 days | 1% |
| Erik Folkersen | 4/10 | 3633 days | 1% |
| Mark de Boer | 8/10 | 3639 days | 0% |
| Tina | 9/10 | 3649 days | 0% |
| Jacquimd13 | 10/10 | 3772 days | 25% |
| Natascha Rachel | 7/10 | 3839 days | 22% |
| A Jones | 9/10 | 3866 days | 25% |
| Walker | 5/10 | 3866 days | 20% |
| Lindsey Clough | 2/10 | 3872 days | 18% |
| Natalie Maguire | 5/10 | 3877 days | 20% |
| Andreas Rath | 6/10 | 3879 days | 20% |
| Peter & Angela Brown | 10/10 | 3884 days | 25% |
| Chris Ashton | 7/10 | 3888 days | 22% |
| Kees Stigter | 7/10 | 3890 days | 22% |
| Diete Rokosch | 9/10 | 3895 days | 25% |
| Brian | 10/10 | 3897 days | 25% |
| Ronald Lippett | 8/10 | 3899 days | 23% |
| Ines | 8/10 | 3909 days | 23% |
| Julian Seizinger | 2/10 | 3909 days | 18% |
| Ann Thompson | 9/10 | 3910 days | 25% |
| Luise Jaeger | 10/10 | 3912 days | 25% |
| Eva Stauderova | 6/10 | 3913 days | 20% |
| Marianne Astorp | 8/10 | 3913 days | 23% |
| Henrik Petersen | 7/10 | 3915 days | 22% |
| Michael Eck | 8/10 | 3915 days | 23% |
| Lili | 8/10 | 3915 days | 23% |
| Florian | 7/10 | 3915 days | 22% |
| willsworthy | 5/10 | 4014 days | 20% |
| craigy | 5/10 | 4106 days | 20% |
| BigSis | 7/10 | 4106 days | 22% |
| Russ Turner | 2/10 | 4245 days | 18% |
| Andy | 6/10 | 4249 days | 20% |
| Michael Egli | 9/10 | 4250 days | 25% |
| Alan & Lorna | 3/10 | 4252 days | 19% |
| Venot | 7/10 | 4262 days | 22% |
| Roger Trusedale | 5/10 | 4269 days | 20% |
| David Rich | 6/10 | 4272 days | 20% |
| Mathias Skov | 4/10 | 4273 days | 19% |
| Nikki Wood | 6/10 | 4281 days | 20% |
| Mike Kirchner | 2/10 | 4283 days | 18% |
| Wolfgang G | 10/10 | 4293 days | 25% |
| Bo Moenstead | 8/10 | 4296 days | 23% |
| cees juffermans | 8/10 | 4300 days | 23% |
| Camenzind | 7/10 | 4307 days | 22% |
| Angela Stringer | 4/10 | 4318 days | 19% |
| blokzyl | 8/10 | 4338 days | 23% |
| aages | 9/10 | 4342 days | 25% |
| Emma Coltman | 5/10 | 4351 days | 20% |
| Helen Pet | 9/10 | 4357 days | 25% |
| nancyburns | 7/10 | 4379 days | 22% |
| Von | 5/10 | 4379 days | 20% |
| rita | 7/10 | 4458 days | 22% |
| Jess Thompson | 10/10 | 4471 days | 25% |
| Boxa Smith | 10/10 | 4471 days | 25% |
| LowerD | 9/10 | 4587 days | 25% |
| Sofie | 8/10 | 4593 days | 23% |
| Arjan Muis | 7/10 | 4595 days | 22% |
| Marion | 10/10 | 4597 days | 25% |
| Kim | 6/10 | 4597 days | 20% |
| MichaelS1 | 3/10 | 4609 days | 19% |
| ClodaghM | 8/10 | 4610 days | 23% |
| Andrew Wilson | 9/10 | 4610 days | 25% |
| FiensG | 8/10 | 4612 days | 23% |
| Joel | 7/10 | 4613 days | 22% |
| Robert | 4/10 | 4616 days | 19% |
| Chris | 8/10 | 4617 days | 23% |
| JuliaG1 | 7/10 | 4626 days | 22% |
| DavidMurray | 7/10 | 4627 days | 22% |
| AndrewF78 | 6/10 | 4629 days | 20% |
| Sarah | 8/10 | 4629 days | 23% |
| Carmel | 7/10 | 4633 days | 22% |
| marcusr | 7/10 | 4634 days | 22% |
| BethanD | 9/10 | 4640 days | 25% |
| ClaudiaK | 1/10 | 4642 days | 18% |
| Miguel | 3/10 | 4643 days | 19% |
| Ko | 8/10 | 4657 days | 23% |
| Nienhaus | 7/10 | 4660 days | 22% |
| Kern | 3/10 | 4677 days | 19% |
| Stephanie | 9/10 | 4693 days | 25% |
| Miha | 10/10 | 4698 days | 25% |
| Jacinta | 3/10 | 4723 days | 19% |
| Lara | 7/10 | 4770 days | 22% |
| Katie | 7/10 | 4788 days | 22% |
| Daniela Bell | 10/10 | 4799 days | 25% |
| Jenny | 7/10 | 4803 days | 22% |
| maria d | 10/10 | 4835 days | 25% |
| fgregory | 3/10 | 4855 days | 19% |
| woodolly | 3/10 | 4936 days | 19% |
| Christian | 6/10 | 4980 days | 20% |
| Alexandra Vogeli | 8/10 | 4980 days | 23% |
| Richard Steward | 9/10 | 4990 days | 25% |
| boukje | 8/10 | 4993 days | 23% |
| Stephanie | 10/10 | 5005 days | 25% |
| Carla | 8/10 | 5005 days | 23% |
| Melissa Steedman | 7/10 | 5032 days | 22% |
| Vanessa Brennan | 5/10 | 5032 days | 20% |
| Maria | 8/10 | 5036 days | 23% |
| Gerber Liselotte | 7/10 | 5067 days | 22% |
| Manuel | 5/10 | 5082 days | 20% |
| Tom Clements | 6/10 | 5083 days | 20% |
| Sally Walker | 9/10 | 5110 days | 25% |
| Bridgy | 10/10 | 5283 days | 25% |
| andrew julie | 8/10 | 5317 days | 23% |
| Bas Marieke | 8/10 | 5334 days | 23% |
| Richhouse | 8/10 | 5339 days | 23% |
| Dennis | 7/10 | 5340 days | 22% |
| Rietveld | 6/10 | 5351 days | 20% |
| Susanne | 5/10 | 5356 days | 20% |
| Lucy | 7/10 | 5356 days | 22% |
| Ralph | 7/10 | 5358 days | 22% |
| Nissa | 7/10 | 5358 days | 22% |
| Ash Sturm | 6/10 | 5475 days | 20% |
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
-3.79% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 52 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 | -3.74% |
| 198 | -3.76% |
| 199 | -3.78% |
| 200 | -3.79% |
| 201 | -3.81% |
| 202 | -3.83% |
| 203 | -3.85% |
| … | … |
Final Ranking Score
66%
The final ranking score once adjustments and rounding has been applied. This value is cached and recalculated each day. Therefore it may not be precisely accurate based on the other values presented.
If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz.