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
54.22%
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 | Face-to-Face | Weight | Relative Weight |
|---|---|---|---|---|---|
| Melissa S | 2/10 | 386 days | 57.29 | 100% | |
| Inez Cavallaro | 6/10 | 447 days | 56.72 | 99% | |
| John Farley | 10/10 | 1048 days |  |
5.35 | 9% |
| Frank Fabian | 8/10 | 1099 days | |
4.74 | 8% |
| Les Hendy | 8/10 | 1125 days | |
4.69 | 8% |
| Lea Celerier | 8/10 | 1126 days | |
4.69 | 8% |
| Jane Scott | 9/10 | 1176 days | 4.84 | 8% | |
| Michelle Smit | 8/10 | 1238 days | 4.48 | 8% | |
| Jan Berendsen | 5/10 | 1334 days | |
3.67 | 6% |
| Chandra Macraigne | 6/10 | 1369 days | |
3.7 | 6% |
| Nanna Torp | 3/10 | 1371 days | |
3.43 | 6% |
| Karel | 7/10 | 2108 days | |
2.75 | 5% |
| Dick Kooij | 7/10 | 2529 days | |
2.0 | 3% |
| Huw Davies | 8/10 | 2797 days | |
1.59 | 3% |
| Goran Backlund | 7/10 | 2807 days | |
1.5 | 3% |
| Marc Schmiedily | 3/10 | 2808 days | |
1.27 | 2% |
| Martin Beuker | 8/10 | 2828 days | |
1.53 | 3% |
| Richard Harvey | 8/10 | 2831 days | |
1.52 | 3% |
| Mark Bogton | 5/10 | 2831 days | |
1.3 | 2% |
| Thomas | 5/10 | 2833 days | |
1.3 | 2% |
| Kimberley Mills | 8/10 | 2838 days | |
1.51 | 3% |
| Scott Simpson | 5/10 | 2839 days | |
1.29 | 2% |
| Luis Valenzuela | 5/10 | 2844 days | |
1.28 | 2% |
| Petra | 8/10 | 2846 days | |
1.49 | 3% |
| David Blundell | 7/10 | 2846 days | |
1.43 | 2% |
| Lucie Rutherfurd | 9/10 | 2849 days | |
1.57 | 3% |
| Peter W. | 3/10 | 2913 days | 1.11 | 2% | |
| Steve Neilson | 8/10 | 2920 days | |
1.36 | 2% |
| Erik Folkersen | 4/10 | 2927 days | |
1.12 | 2% |
| Mark de Boer | 8/10 | 2933 days | |
1.33 | 2% |
| Tina | 9/10 | 2943 days | |
1.38 | 2% |
| Jacquimd13 | 10/10 | 3066 days | 1.14 | 2% | |
| Natascha Rachel | 7/10 | 3133 days | |
0.92 | 2% |
| A Jones | 9/10 | 3160 days | |
0.96 | 2% |
| Walker | 5/10 | 3160 days | |
0.78 | 1% |
| Lindsey Clough | 2/10 | 3166 days | |
0.71 | 1% |
| Natalie Maguire | 5/10 | 3171 days | |
0.76 | 1% |
| Andreas Rath | 6/10 | 3173 days | |
0.77 | 1% |
| Peter & Angela Brown | 10/10 | 3178 days | |
0.92 | 2% |
| Chris Ashton | 7/10 | 3182 days | |
0.83 | 1% |
| Kees Stigter | 7/10 | 3184 days | |
0.83 | 1% |
| Diete Rokosch | 9/10 | 3189 days | |
0.9 | 2% |
| Brian | 10/10 | 3191 days | |
0.9 | 2% |
| Ronald Lippett | 8/10 | 3193 days | |
0.85 | 1% |
| Ines | 8/10 | 3203 days | |
0.83 | 1% |
| Julian Seizinger | 2/10 | 3203 days | |
0.66 | 1% |
| Ann Thompson | 9/10 | 3204 days | |
0.87 | 2% |
| Luise Jaeger | 10/10 | 3206 days | |
0.87 | 2% |
| Eva Stauderova | 6/10 | 3207 days | |
0.72 | 1% |
| Marianne Astorp | 8/10 | 3207 days | |
0.82 | 1% |
| Henrik Petersen | 7/10 | 3209 days | |
0.79 | 1% |
| Michael Eck | 8/10 | 3209 days | |
0.82 | 1% |
| Lili | 8/10 | 3209 days | |
0.82 | 1% |
| Florian | 7/10 | 3209 days | |
0.79 | 1% |
| willsworthy | 5/10 | 3308 days | 0.54 | 1% | |
| craigy | 5/10 | 3400 days | 0.4 | 1% | |
| BigSis | 7/10 | 3400 days | 0.45 | 1% | |
| Russ Turner | 2/10 | 3539 days | |
0.16 | 0% |
| Andy | 6/10 | 3543 days | |
0.17 | 0% |
| Michael Egli | 9/10 | 3544 days | |
0.21 | 0% |
| Alan & Lorna | 3/10 | 3546 days | |
0.16 | 0% |
| Venot | 7/10 | 3556 days | |
0.17 | 0% |
| Roger Trusedale | 5/10 | 3563 days | |
0.14 | 0% |
| David Rich | 6/10 | 3566 days | |
0.14 | 0% |
| Mathias Skov | 4/10 | 3567 days | |
0.13 | 0% |
| Nikki Wood | 6/10 | 3575 days | |
0.12 | 0% |
| Mike Kirchner | 2/10 | 3577 days | |
0.11 | 0% |
| Wolfgang G | 10/10 | 3587 days | |
0.12 | 0% |
| Bo Moenstead | 8/10 | 3590 days | |
0.11 | 0% |
| cees juffermans | 8/10 | 3594 days | |
0.1 | 0% |
| Camenzind | 7/10 | 3601 days | |
0.09 | 0% |
| Angela Stringer | 4/10 | 3612 days | 0.06 | 0% | |
| blokzyl | 8/10 | 3632 days | |
0.03 | 0% |
| aages | 9/10 | 3636 days | |
0.03 | 0% |
| Emma Coltman | 5/10 | 3645 days | |
0.01 | 0% |
| Helen Pet | 9/10 | 3651 days | |
0.0 | 0% |
| nancyburns | 7/10 | 3673 days | 0.0 | 0% | |
| Von | 5/10 | 3673 days | 0.0 | 0% | |
| rita | 7/10 | 3752 days | |
0.0 | 0% |
| Jess Thompson | 10/10 | 3765 days | 0.0 | 0% | |
| Boxa Smith | 10/10 | 3765 days | 0.0 | 0% | |
| LowerD | 9/10 | 3881 days | |
0.0 | 0% |
| Sofie | 8/10 | 3887 days | |
0.0 | 0% |
| Arjan Muis | 7/10 | 3889 days | |
0.0 | 0% |
| Marion | 10/10 | 3891 days | |
0.0 | 0% |
| Kim | 6/10 | 3891 days | |
0.0 | 0% |
| MichaelS1 | 3/10 | 3903 days | |
0.0 | 0% |
| ClodaghM | 8/10 | 3904 days | |
0.0 | 0% |
| Andrew Wilson | 9/10 | 3904 days | |
0.0 | 0% |
| FiensG | 8/10 | 3906 days | |
0.0 | 0% |
| Joel | 7/10 | 3907 days | |
0.0 | 0% |
| Robert | 4/10 | 3910 days | |
0.0 | 0% |
| Chris | 8/10 | 3911 days | |
0.0 | 0% |
| JuliaG1 | 7/10 | 3920 days | |
0.0 | 0% |
| DavidMurray | 7/10 | 3921 days | |
0.0 | 0% |
| AndrewF78 | 6/10 | 3923 days | |
0.0 | 0% |
| Sarah | 8/10 | 3923 days | |
0.0 | 0% |
| Carmel | 7/10 | 3927 days | |
0.0 | 0% |
| marcusr | 7/10 | 3928 days | |
0.0 | 0% |
| BethanD | 9/10 | 3934 days | |
0.0 | 0% |
| ClaudiaK | 1/10 | 3936 days | |
0.0 | 0% |
| Miguel | 3/10 | 3937 days | |
0.0 | 0% |
| Ko | 8/10 | 3951 days | |
0.0 | 0% |
| Nienhaus | 7/10 | 3954 days | |
0.0 | 0% |
| Kern | 3/10 | 3971 days | |
0.0 | 0% |
| Stephanie | 9/10 | 3987 days | |
0.0 | 0% |
| Miha | 10/10 | 3991 days | |
0.0 | 0% |
| Jacinta | 3/10 | 4017 days | |
0.0 | 0% |
| Lara | 7/10 | 4064 days | |
0.0 | 0% |
| Katie | 7/10 | 4082 days | |
0.0 | 0% |
| Daniela Bell | 10/10 | 4093 days | |
0.0 | 0% |
| Jenny | 7/10 | 4097 days | |
0.0 | 0% |
| maria d | 10/10 | 4129 days | 0.0 | 0% | |
| fgregory | 3/10 | 4149 days | 0.0 | 0% | |
| woodolly | 3/10 | 4230 days | 0.0 | 0% | |
| Christian | 6/10 | 4274 days | |
0.0 | 0% |
| Alexandra Vogeli | 8/10 | 4274 days | |
0.0 | 0% |
| Richard Steward | 9/10 | 4284 days | |
0.0 | 0% |
| boukje | 8/10 | 4287 days | 0.0 | 0% | |
| Stephanie | 10/10 | 4299 days | |
0.0 | 0% |
| Carla | 8/10 | 4299 days | |
0.0 | 0% |
| Melissa Steedman | 7/10 | 4326 days | |
0.0 | 0% |
| Vanessa Brennan | 5/10 | 4326 days | |
0.0 | 0% |
| Maria | 8/10 | 4330 days | |
0.0 | 0% |
| Gerber Liselotte | 7/10 | 4361 days | |
0.0 | 0% |
| Manuel | 5/10 | 4376 days | |
0.0 | 0% |
| Tom Clements | 6/10 | 4377 days | |
0.0 | 0% |
| Sally Walker | 9/10 | 4404 days | 0.0 | 0% | |
| Bridgy | 10/10 | 4577 days | |
0.0 | 0% |
| andrew julie | 8/10 | 4611 days | |
0.0 | 0% |
| Bas Marieke | 8/10 | 4628 days | |
0.0 | 0% |
| Richhouse | 8/10 | 4633 days | |
0.0 | 0% |
| Dennis | 7/10 | 4634 days | |
0.0 | 0% |
| Rietveld | 6/10 | 4645 days | |
0.0 | 0% |
| Susanne | 5/10 | 4650 days | |
0.0 | 0% |
| Lucy | 7/10 | 4650 days | |
0.0 | 0% |
| Ralph | 7/10 | 4652 days | |
0.0 | 0% |
| Nissa | 7/10 | 4652 days | |
0.0 | 0% |
| Ash Sturm | 6/10 | 4769 days | 0.0 | 0% |
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
-3.98% Adjustment
There may be an adjustment if an experience hasn't received any reviews within the last 60 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 199 days.
The Hells Gate and Wai Ora Spa experience has been adjusted for 199 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 196 | -3.92% |
| 197 | -3.94% |
| 198 | -3.96% |
| 199 | -3.98% |
| 200 | -4.00% |
| 201 | -4.02% |
| 202 | -4.04% |
| … | … |
Final Ranking Score
50%
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.