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 Te Anau Glowworm Caves.
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.
Nick Morrison
Rankers owner
Te Anau Glowworm Caves
Valid Reviews
190 Valid Reviews
The Te Anau Glowworm Caves experience has a total of 191 reviews. There are 190 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 190 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 49 |
|
26% |
| 9/10 | 43 |
|
23% |
| 8/10 | 41 |
|
22% |
| 7/10 | 34 |
|
18% |
| 6/10 | 9 |
|
5% |
| 5/10 | 8 |
|
4% |
| 4/10 | 5 |
|
3% |
| 3/10 | 0 |
|
0% |
| 2/10 | 1 |
|
1% |
| 1/10 | 0 |
|
0% |
82.05% Average
The raw data average (mean) for all the Te Anau Glowworm Caves valid reviews is 82.05% and is based on 190 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
176 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 190 valid reviews, the experience has 176 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 176 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 45 |
|
26% |
| 9/10 | 39 |
|
22% |
| 8/10 | 38 |
|
22% |
| 7/10 | 34 |
|
19% |
| 6/10 | 8 |
|
5% |
| 5/10 | 8 |
|
5% |
| 4/10 | 3 |
|
2% |
| 3/10 | 0 |
|
0% |
| 2/10 | 1 |
|
1% |
| 1/10 | 0 |
|
0% |
82.10% Average
The raw data average (mean) for all the Te Anau Glowworm Caves face-to-face reviews is 82.10% and is based on 176 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
85.12%
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 |
|---|---|---|---|---|---|
| Dorothy and Graham Glen | 9/10 | 289 days |  |
104.12 | 100% |
| Dan Coates | 9/10 | 522 days | |
68.19 | 65% |
| Dominik | 9/10 | 522 days | |
68.19 | 65% |
| Holloway | 10/10 | 545 days | |
63.52 | 61% |
| Christina | 6/10 | 613 days | |
50.18 | 48% |
| Barbara Knops | 9/10 | 615 days | |
49.81 | 47% |
| Manu Liberta | 10/10 | 625 days | |
48.01 | 46% |
| Bruno | 9/10 | 635 days | |
46.24 | 44% |
| Kirsty Smith | 10/10 | 658 days | |
42.31 | 40% |
| Sophia Satter | 8/10 | 669 days | |
40.51 | 38% |
| Afiya Levy | 10/10 | 890 days | |
13.99 | 13% |
| Johannes Eisel | 6/10 | 899 days | |
13.31 | 12% |
| Alexander Mattea | 5/10 | 899 days | |
13.31 | 12% |
| Timea Bagosi | 9/10 | 901 days | 10.96 | 10% | |
| Riviere | 8/10 | 913 days | |
12.3 | 11% |
| Dani | 8/10 | 915 days | |
12.16 | 11% |
| Benoit Leclerc | 7/10 | 917 days | |
12.02 | 11% |
| Anna Stoehr | 10/10 | 935 days | |
10.87 | 10% |
| Kai Krchmar | 6/10 | 988 days | |
8.18 | 7% |
| Kristina Farkas | 5/10 | 1283 days | |
5.69 | 5% |
| Sophia Kadel | 10/10 | 1313 days | |
5.64 | 5% |
| Laura and Marie | 7/10 | 1319 days | |
5.63 | 5% |
| Rachel S | 10/10 | 1326 days | 4.68 | 4% | |
| Joris Giullemot | 8/10 | 1635 days | |
5.11 | 4% |
| Laura Metz | 7/10 | 1646 days | |
5.09 | 4% |
| Hubertus Thost | 7/10 | 1646 days | |
5.09 | 4% |
| Amanda | 4/10 | 1661 days | 3.93 | 3% | |
| S B | 10/10 | 1674 days | |
5.05 | 4% |
| M K | 10/10 | 1674 days | |
5.05 | 4% |
| Maya Bakker-deDreu | 8/10 | 1682 days | |
5.04 | 4% |
| Christin Woelk | 9/10 | 1962 days | |
4.57 | 4% |
| Maria Klister | 7/10 | 1982 days | |
4.54 | 4% |
| Lydia Kleinkoenen | 9/10 | 2002 days | |
4.51 | 4% |
| Jessica Grewe | 9/10 | 2002 days | |
4.51 | 4% |
| Hannah Lia-Isis Kubillus | 9/10 | 2002 days | |
4.51 | 4% |
| Jan Zimmerman | 8/10 | 2013 days | |
4.49 | 3% |
| Margaret and Derek McNeil | 10/10 | 2073 days | |
4.39 | 3% |
| Frank and Suzanne | 8/10 | 2088 days | |
4.37 | 3% |
| RollingMoon | 8/10 | 2149 days | 3.56 | 3% | |
| Marcel & Kim Meichtry | 7/10 | 2369 days | |
3.91 | 3% |
| Howell Davies | 5/10 | 2372 days | |
3.9 | 3% |
| Baas | 7/10 | 2372 days | |
3.9 | 3% |
| Pete & Pat Etheridge | 8/10 | 2372 days | |
3.9 | 3% |
| Siegfried Richter | 7/10 | 2373 days | |
3.9 | 3% |
| Melanie Mathiak | 10/10 | 2375 days | |
3.9 | 3% |
| Sig Schrattner | 8/10 | 2375 days | |
3.9 | 3% |
| Rebecca Doehl | 7/10 | 2376 days | |
3.89 | 3% |
| Seth & Carla | 7/10 | 2377 days | |
3.89 | 3% |
| Gabriele Wendt | 9/10 | 2377 days | |
3.89 | 3% |
| Tadej Ferjan | 8/10 | 2377 days | |
3.89 | 3% |
| Mary Mitchell | 10/10 | 2377 days | |
3.89 | 3% |
| Emily Wikston | 9/10 | 2378 days | |
3.89 | 3% |
| Andreas & Leonie Fehr | 10/10 | 2384 days | |
3.88 | 3% |
| Horst Langstein | 9/10 | 2385 days | |
3.88 | 3% |
| Marco Scheiber | 9/10 | 2386 days | |
3.88 | 3% |
| Friedrich Kaltner | 10/10 | 2388 days | |
3.87 | 3% |
| Frank & Julia | 10/10 | 2391 days | |
3.87 | 3% |
| Thyg Lingdal | 10/10 | 2391 days | |
3.87 | 3% |
| Nicole van Bergen | 8/10 | 2391 days | |
3.87 | 3% |
| Mike & April Prince | 7/10 | 2405 days | |
3.85 | 3% |
| Alfred & Henrike | 8/10 | 2417 days | |
3.83 | 3% |
| Lyn Stainton | 6/10 | 2466 days | |
3.75 | 3% |
| Ken Talan | 10/10 | 2694 days | |
3.37 | 2% |
| Jon_and_Family | 9/10 | 2698 days | 2.8 | 2% | |
| Gertz | 10/10 | 2702 days | |
3.36 | 2% |
| Katarina Bokor | 8/10 | 2706 days | |
3.35 | 2% |
| Mark Franklin | 6/10 | 2706 days | |
3.35 | 2% |
| Gordon Agent | 10/10 | 2706 days | |
3.35 | 2% |
| Maureen Hardy | 8/10 | 2706 days | |
3.35 | 2% |
| AJ van Pelt | 8/10 | 2706 days | |
3.35 | 2% |
| Werner and Rita | 9/10 | 2713 days | |
3.34 | 2% |
| Richard Dudfield | 10/10 | 2715 days | |
3.34 | 2% |
| Sayaka | 7/10 | 2715 days | |
3.34 | 2% |
| Urs and Isabella | 7/10 | 2716 days | |
3.34 | 2% |
| Juliane Kleiu | 10/10 | 2719 days | |
3.33 | 2% |
| Linda Kremer | 9/10 | 2720 days | |
3.33 | 2% |
| Rebecca Johnston | 9/10 | 2720 days | |
3.33 | 2% |
| David Mellard | 10/10 | 2721 days | |
3.33 | 2% |
| Bruce & Elaine Chote | 10/10 | 2721 days | |
3.33 | 2% |
| Paul Nickson | 8/10 | 2721 days | |
3.33 | 2% |
| Monique | 8/10 | 2721 days | |
3.33 | 2% |
| Beat & Connie | 10/10 | 2723 days | |
3.32 | 2% |
| Alex Stil | 9/10 | 2723 days | |
3.32 | 2% |
| Pein van Nosrt | 7/10 | 2728 days | |
3.32 | 2% |
| Raith | 9/10 | 2728 days | |
3.32 | 2% |
| Elise van Haastert | 8/10 | 2728 days | |
3.32 | 2% |
| Claudia | 10/10 | 2730 days | |
3.31 | 2% |
| Carolin Ranner | 6/10 | 2730 days | |
3.31 | 2% |
| Winskowsky | 9/10 | 2731 days | |
3.31 | 2% |
| Hvid | 9/10 | 2745 days | |
3.29 | 2% |
| Judith K. | 6/10 | 2747 days | |
3.28 | 2% |
| Ruben and Jetske | 7/10 | 2747 days | |
3.28 | 2% |
| Roy Seymour | 9/10 | 2748 days | |
3.28 | 2% |
| Tom Hill | 10/10 | 2752 days | |
3.28 | 2% |
| Ruua Reyrink | 7/10 | 2753 days | |
3.27 | 2% |
| Patrick Hugener | 9/10 | 2753 days | |
3.27 | 2% |
| JohnHaestad | 4/10 | 2757 days | 2.53 | 2% | |
| dollimyxture | 10/10 | 2788 days | 2.68 | 2% | |
| aggiemary04 | 10/10 | 2880 days | 2.55 | 2% | |
| victoriauk | 4/10 | 3002 days | |
2.7 | 2% |
| Baumgarten | 8/10 | 3030 days | |
2.82 | 2% |
| travelbunnyadventures | 8/10 | 3033 days | 2.35 | 1% | |
| Don & Geraldine | 10/10 | 3069 days | |
2.76 | 2% |
| Matthias & Ceristiane | 8/10 | 3081 days | |
2.74 | 2% |
| Hilary and Chris Ayton | 9/10 | 3082 days | |
2.73 | 2% |
| Lis & Rob Tate | 9/10 | 3084 days | |
2.73 | 2% |
| ccthornton100 | 10/10 | 3094 days | 2.26 | 1% | |
| Bob Kusesia | 10/10 | 3095 days | |
2.71 | 2% |
| Yssel de Schepper | 7/10 | 3100 days | |
2.7 | 2% |
| Janny Meerdinnk Veldboow | 7/10 | 3100 days | |
2.7 | 2% |
| Arie Ascher | 9/10 | 3101 days | |
2.7 | 2% |
| Wolfgang Engelke | 10/10 | 3103 days | |
2.7 | 2% |
| Thomas K | 9/10 | 3103 days | |
2.7 | 2% |
| Loleit | 7/10 | 3115 days | |
2.68 | 2% |
| Mattias Thorm | 9/10 | 3116 days | |
2.68 | 2% |
| Vincente Garrido | 4/10 | 3117 days | |
2.52 | 2% |
| R Gilge | 10/10 | 3118 days | |
2.67 | 2% |
| Erik Hummelmose | 8/10 | 3118 days | |
2.67 | 2% |
| Ian E | 6/10 | 3118 days | |
2.67 | 2% |
| Nadine Schaee | 9/10 | 3119 days | |
2.67 | 2% |
| Belinda Godhard | 2/10 | 3119 days | |
2.41 | 1% |
| Uwe Rieper | 10/10 | 3121 days | |
2.67 | 2% |
| E.M. Prideaux | 10/10 | 3136 days | |
2.64 | 2% |
| Elizabeth E | 8/10 | 3138 days | |
2.64 | 2% |
| Stevens Frans | 8/10 | 3139 days | |
2.64 | 2% |
| Heinrich Hax | 9/10 | 3142 days | |
2.64 | 2% |
| tanh | 7/10 | 3169 days | |
2.59 | 2% |
| Stephanie Steiner | 8/10 | 3188 days | |
2.56 | 2% |
| Julia May | 9/10 | 3195 days | |
2.55 | 2% |
| X Neils | 7/10 | 3206 days | |
2.53 | 2% |
| Sarah Smith | 5/10 | 3210 days | |
2.52 | 2% |
| Anna | 6/10 | 3214 days | 2.1 | 1% | |
| OliverG1 | 7/10 | 3416 days | |
2.18 | 1% |
| Philipp | 5/10 | 3428 days | |
2.16 | 1% |
| JasminA | 5/10 | 3428 days | |
2.16 | 1% |
| ChristinaV | 8/10 | 3437 days | |
2.15 | 1% |
| JuergenSchnitzer | 9/10 | 3444 days | |
2.14 | 1% |
| AstridVG | 7/10 | 3444 days | |
2.14 | 1% |
| NatasjaV | 7/10 | 3446 days | |
2.14 | 1% |
| JimmyK | 7/10 | 3446 days | |
2.14 | 1% |
| MarcoJ | 9/10 | 3448 days | |
2.13 | 1% |
| LucyPoland | 9/10 | 3449 days | |
2.13 | 1% |
| Stolz | 7/10 | 3451 days | |
2.13 | 1% |
| BrzezinskaM | 10/10 | 3453 days | |
2.12 | 1% |
| AndreB | 10/10 | 3453 days | |
2.12 | 1% |
| Linda | 7/10 | 3459 days | |
2.11 | 1% |
| Susan | 8/10 | 3460 days | |
2.11 | 1% |
| Byleveld | 7/10 | 3461 days | |
2.11 | 1% |
| JoseB | 8/10 | 3462 days | |
2.11 | 1% |
| JetteG | 10/10 | 3462 days | |
2.11 | 1% |
| CarolF | 7/10 | 3463 days | |
2.11 | 1% |
| Rachel | 9/10 | 3477 days | |
2.08 | 1% |
| Claire | 7/10 | 3477 days | |
2.08 | 1% |
| Denise | 8/10 | 3478 days | |
2.08 | 1% |
| Denk | 8/10 | 3490 days | |
2.06 | 1% |
| Klalis | 10/10 | 3492 days | |
2.06 | 1% |
| Thomas | 4/10 | 3496 days | |
1.93 | 1% |
| Mike | 5/10 | 3497 days | |
2.05 | 1% |
| Debbie Mossman | 9/10 | 3503 days | 1.7 | 1% | |
| Johann | 10/10 | 3504 days | |
2.04 | 1% |
| Carina | 10/10 | 3506 days | |
2.04 | 1% |
| Mat | 8/10 | 3545 days | |
1.97 | 1% |
| Anette | 7/10 | 3547 days | |
1.97 | 1% |
| midlands_missus | 8/10 | 3550 days | 1.64 | 1% | |
| David | 7/10 | 3605 days | |
1.87 | 1% |
| Suyin | 10/10 | 3625 days | |
1.84 | 1% |
| Franz | 10/10 | 3799 days | |
1.56 | 1% |
| Jennifer Baulch | 7/10 | 3804 days | |
1.55 | 1% |
| George Jeffs | 10/10 | 3807 days | |
1.54 | 1% |
| Jacob | 9/10 | 3811 days | |
1.54 | 1% |
| Aharon | 10/10 | 3826 days | |
1.51 | 1% |
| D.A. Mulder | 8/10 | 3827 days | |
1.51 | 1% |
| Knol | 8/10 | 3829 days | |
1.51 | 1% |
| Cole Penelope | 8/10 | 3832 days | |
1.5 | 1% |
| Jody | 7/10 | 3840 days | |
1.49 | 1% |
| Anna | 5/10 | 3840 days | |
1.49 | 1% |
| Pauline Thai | 8/10 | 3847 days | |
1.48 | 1% |
| Dan Adamson | 8/10 | 3847 days | |
1.48 | 1% |
| Stephen Brightman | 8/10 | 3856 days | |
1.46 | 1% |
| Madeleine Rowland | 8/10 | 3856 days | |
1.46 | 1% |
| Bronwyn Gaby | 9/10 | 3874 days | |
1.43 | 1% |
| Free_ride | 9/10 | 3890 days | 1.17 | 0% | |
| Michael | 9/10 | 3913 days | |
1.37 | 0% |
| Raul | 10/10 | 4163 days | |
0.96 | 0% |
| TeamFlorida | 9/10 | 4165 days | |
0.95 | 0% |
| TeamFlorida | 8/10 | 4165 days | |
0.95 | 0% |
| James | 9/10 | 4178 days | |
0.93 | 0% |
| Rudi | 10/10 | 4182 days | |
0.93 | 0% |
| Rolf Kruger | 10/10 | 4206 days | |
0.89 | 0% |
| Brian | 10/10 | 4210 days | |
0.88 | 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 Te Anau Glowworm Caves experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-5.40% Adjustment
There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the Te Anau Glowworm Caves 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 364 days.
The Te Anau Glowworm Caves experience has been adjusted for 270 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 267 | -5.34% |
| 268 | -5.36% |
| 269 | -5.38% |
| 270 | -5.40% |
| 271 | -5.42% |
| 272 | -5.44% |
| 273 | -5.46% |
| … | … |
Final Ranking Score
80%
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.