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
84.44%
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 | 472 days |  |
77.64 | 100% |
| Dan Coates | 9/10 | 705 days | |
34.92 | 45% |
| Dominik | 9/10 | 705 days | |
34.92 | 45% |
| Holloway | 10/10 | 728 days | |
31.61 | 40% |
| Christina | 6/10 | 796 days | |
23.0 | 29% |
| Barbara Knops | 9/10 | 798 days | |
22.77 | 29% |
| Manu Liberta | 10/10 | 808 days | |
21.66 | 27% |
| Bruno | 9/10 | 818 days | |
20.59 | 26% |
| Kirsty Smith | 10/10 | 841 days | |
18.27 | 23% |
| Sophia Satter | 8/10 | 852 days | |
17.23 | 22% |
| Afiya Levy | 10/10 | 1073 days | |
6.09 | 7% |
| Johannes Eisel | 6/10 | 1082 days | |
6.03 | 7% |
| Alexander Mattea | 5/10 | 1082 days | |
6.03 | 7% |
| Timea Bagosi | 9/10 | 1084 days | 5.02 | 6% | |
| Riviere | 8/10 | 1096 days | |
6.0 | 7% |
| Dani | 8/10 | 1098 days | |
6.0 | 7% |
| Benoit Leclerc | 7/10 | 1100 days | |
5.99 | 7% |
| Anna Stoehr | 10/10 | 1118 days | |
5.96 | 7% |
| Kai Krchmar | 6/10 | 1171 days | |
5.88 | 7% |
| Kristina Farkas | 5/10 | 1466 days | |
5.39 | 6% |
| Sophia Kadel | 10/10 | 1496 days | |
5.34 | 6% |
| Laura and Marie | 7/10 | 1502 days | |
5.33 | 6% |
| Rachel S | 10/10 | 1509 days | 4.43 | 5% | |
| Joris Giullemot | 8/10 | 1818 days | |
4.81 | 5% |
| Laura Metz | 7/10 | 1829 days | |
4.79 | 5% |
| Hubertus Thost | 7/10 | 1829 days | |
4.79 | 5% |
| Amanda | 4/10 | 1844 days | 3.7 | 4% | |
| S B | 10/10 | 1857 days | |
4.75 | 5% |
| M K | 10/10 | 1857 days | |
4.75 | 5% |
| Maya Bakker-deDreu | 8/10 | 1865 days | |
4.73 | 5% |
| Christin Woelk | 9/10 | 2145 days | |
4.27 | 5% |
| Maria Klister | 7/10 | 2165 days | |
4.24 | 5% |
| Lydia Kleinkoenen | 9/10 | 2185 days | |
4.21 | 5% |
| Jessica Grewe | 9/10 | 2185 days | |
4.21 | 5% |
| Hannah Lia-Isis Kubillus | 9/10 | 2185 days | |
4.21 | 5% |
| Jan Zimmerman | 8/10 | 2196 days | |
4.19 | 5% |
| Margaret and Derek McNeil | 10/10 | 2256 days | |
4.09 | 5% |
| Frank and Suzanne | 8/10 | 2271 days | |
4.07 | 5% |
| RollingMoon | 8/10 | 2332 days | 3.31 | 4% | |
| Marcel & Kim Meichtry | 7/10 | 2552 days | |
3.6 | 4% |
| Howell Davies | 5/10 | 2555 days | |
3.6 | 4% |
| Baas | 7/10 | 2555 days | |
3.6 | 4% |
| Pete & Pat Etheridge | 8/10 | 2555 days | |
3.6 | 4% |
| Siegfried Richter | 7/10 | 2556 days | |
3.6 | 4% |
| Melanie Mathiak | 10/10 | 2558 days | |
3.6 | 4% |
| Sig Schrattner | 8/10 | 2558 days | |
3.6 | 4% |
| Rebecca Doehl | 7/10 | 2559 days | |
3.59 | 4% |
| Seth & Carla | 7/10 | 2560 days | |
3.59 | 4% |
| Gabriele Wendt | 9/10 | 2560 days | |
3.59 | 4% |
| Tadej Ferjan | 8/10 | 2560 days | |
3.59 | 4% |
| Mary Mitchell | 10/10 | 2560 days | |
3.59 | 4% |
| Emily Wikston | 9/10 | 2561 days | |
3.59 | 4% |
| Andreas & Leonie Fehr | 10/10 | 2567 days | |
3.58 | 4% |
| Horst Langstein | 9/10 | 2568 days | |
3.58 | 4% |
| Marco Scheiber | 9/10 | 2569 days | |
3.58 | 4% |
| Friedrich Kaltner | 10/10 | 2571 days | |
3.57 | 4% |
| Frank & Julia | 10/10 | 2574 days | |
3.57 | 4% |
| Thyg Lingdal | 10/10 | 2574 days | |
3.57 | 4% |
| Nicole van Bergen | 8/10 | 2574 days | |
3.57 | 4% |
| Mike & April Prince | 7/10 | 2588 days | |
3.55 | 4% |
| Alfred & Henrike | 8/10 | 2600 days | |
3.53 | 4% |
| Lyn Stainton | 6/10 | 2649 days | |
3.45 | 4% |
| Ken Talan | 10/10 | 2877 days | |
3.07 | 3% |
| Jon_and_Family | 9/10 | 2881 days | 2.55 | 3% | |
| Gertz | 10/10 | 2885 days | |
3.06 | 3% |
| Katarina Bokor | 8/10 | 2889 days | |
3.05 | 3% |
| Mark Franklin | 6/10 | 2889 days | |
3.05 | 3% |
| Gordon Agent | 10/10 | 2889 days | |
3.05 | 3% |
| Maureen Hardy | 8/10 | 2889 days | |
3.05 | 3% |
| AJ van Pelt | 8/10 | 2889 days | |
3.05 | 3% |
| Werner and Rita | 9/10 | 2896 days | |
3.04 | 3% |
| Richard Dudfield | 10/10 | 2898 days | |
3.04 | 3% |
| Sayaka | 7/10 | 2898 days | |
3.04 | 3% |
| Urs and Isabella | 7/10 | 2899 days | |
3.03 | 3% |
| Juliane Kleiu | 10/10 | 2902 days | |
3.03 | 3% |
| Linda Kremer | 9/10 | 2903 days | |
3.03 | 3% |
| Rebecca Johnston | 9/10 | 2903 days | |
3.03 | 3% |
| David Mellard | 10/10 | 2904 days | |
3.03 | 3% |
| Bruce & Elaine Chote | 10/10 | 2904 days | |
3.03 | 3% |
| Paul Nickson | 8/10 | 2904 days | |
3.03 | 3% |
| Monique | 8/10 | 2904 days | |
3.03 | 3% |
| Beat & Connie | 10/10 | 2906 days | |
3.02 | 3% |
| Alex Stil | 9/10 | 2906 days | |
3.02 | 3% |
| Pein van Nosrt | 7/10 | 2911 days | |
3.01 | 3% |
| Raith | 9/10 | 2911 days | |
3.01 | 3% |
| Elise van Haastert | 8/10 | 2911 days | |
3.01 | 3% |
| Claudia | 10/10 | 2913 days | |
3.01 | 3% |
| Carolin Ranner | 6/10 | 2913 days | |
3.01 | 3% |
| Winskowsky | 9/10 | 2914 days | |
3.01 | 3% |
| Hvid | 9/10 | 2928 days | |
2.99 | 3% |
| Judith K. | 6/10 | 2930 days | |
2.98 | 3% |
| Ruben and Jetske | 7/10 | 2930 days | |
2.98 | 3% |
| Roy Seymour | 9/10 | 2931 days | |
2.98 | 3% |
| Tom Hill | 10/10 | 2935 days | |
2.98 | 3% |
| Ruua Reyrink | 7/10 | 2936 days | |
2.97 | 3% |
| Patrick Hugener | 9/10 | 2936 days | |
2.97 | 3% |
| JohnHaestad | 4/10 | 2940 days | 2.3 | 2% | |
| dollimyxture | 10/10 | 2971 days | 2.43 | 2% | |
| aggiemary04 | 10/10 | 3063 days | 2.3 | 2% | |
| victoriauk | 4/10 | 3185 days | |
2.41 | 2% |
| Baumgarten | 8/10 | 3213 days | |
2.52 | 3% |
| travelbunnyadventures | 8/10 | 3216 days | 2.09 | 2% | |
| Don & Geraldine | 10/10 | 3252 days | |
2.45 | 2% |
| Matthias & Ceristiane | 8/10 | 3264 days | |
2.43 | 2% |
| Hilary and Chris Ayton | 9/10 | 3265 days | |
2.43 | 2% |
| Lis & Rob Tate | 9/10 | 3267 days | |
2.43 | 2% |
| ccthornton100 | 10/10 | 3277 days | 2.01 | 2% | |
| Bob Kusesia | 10/10 | 3278 days | |
2.41 | 2% |
| Yssel de Schepper | 7/10 | 3283 days | |
2.4 | 2% |
| Janny Meerdinnk Veldboow | 7/10 | 3283 days | |
2.4 | 2% |
| Arie Ascher | 9/10 | 3284 days | |
2.4 | 2% |
| Wolfgang Engelke | 10/10 | 3286 days | |
2.4 | 2% |
| Thomas K | 9/10 | 3286 days | |
2.4 | 2% |
| Loleit | 7/10 | 3298 days | |
2.38 | 2% |
| Mattias Thorm | 9/10 | 3299 days | |
2.38 | 2% |
| Vincente Garrido | 4/10 | 3300 days | |
2.24 | 2% |
| R Gilge | 10/10 | 3301 days | |
2.37 | 2% |
| Erik Hummelmose | 8/10 | 3301 days | |
2.37 | 2% |
| Ian E | 6/10 | 3301 days | |
2.37 | 2% |
| Nadine Schaee | 9/10 | 3302 days | |
2.37 | 2% |
| Belinda Godhard | 2/10 | 3302 days | |
2.13 | 2% |
| Uwe Rieper | 10/10 | 3304 days | |
2.37 | 2% |
| E.M. Prideaux | 10/10 | 3319 days | |
2.34 | 2% |
| Elizabeth E | 8/10 | 3321 days | |
2.34 | 2% |
| Stevens Frans | 8/10 | 3322 days | |
2.34 | 2% |
| Heinrich Hax | 9/10 | 3325 days | |
2.33 | 2% |
| tanh | 7/10 | 3352 days | |
2.29 | 2% |
| Stephanie Steiner | 8/10 | 3371 days | |
2.26 | 2% |
| Julia May | 9/10 | 3378 days | |
2.25 | 2% |
| X Neils | 7/10 | 3389 days | |
2.23 | 2% |
| Sarah Smith | 5/10 | 3393 days | |
2.22 | 2% |
| Anna | 6/10 | 3397 days | 1.85 | 2% | |
| OliverG1 | 7/10 | 3599 days | |
1.88 | 2% |
| Philipp | 5/10 | 3611 days | |
1.86 | 2% |
| JasminA | 5/10 | 3611 days | |
1.86 | 2% |
| ChristinaV | 8/10 | 3620 days | |
1.85 | 2% |
| JuergenSchnitzer | 9/10 | 3627 days | |
1.84 | 2% |
| AstridVG | 7/10 | 3627 days | |
1.84 | 2% |
| NatasjaV | 7/10 | 3629 days | |
1.83 | 2% |
| JimmyK | 7/10 | 3629 days | |
1.83 | 2% |
| MarcoJ | 9/10 | 3631 days | |
1.83 | 2% |
| LucyPoland | 9/10 | 3632 days | |
1.83 | 2% |
| Stolz | 7/10 | 3634 days | |
1.83 | 2% |
| BrzezinskaM | 10/10 | 3636 days | |
1.82 | 2% |
| AndreB | 10/10 | 3636 days | |
1.82 | 2% |
| Linda | 7/10 | 3642 days | |
1.81 | 2% |
| Susan | 8/10 | 3643 days | |
1.81 | 2% |
| Byleveld | 7/10 | 3644 days | |
1.81 | 2% |
| JoseB | 8/10 | 3645 days | |
1.81 | 2% |
| JetteG | 10/10 | 3645 days | |
1.81 | 2% |
| CarolF | 7/10 | 3646 days | |
1.81 | 2% |
| Rachel | 9/10 | 3660 days | |
1.78 | 2% |
| Claire | 7/10 | 3660 days | |
1.78 | 2% |
| Denise | 8/10 | 3661 days | |
1.78 | 2% |
| Denk | 8/10 | 3673 days | |
1.76 | 2% |
| Klalis | 10/10 | 3675 days | |
1.76 | 2% |
| Thomas | 4/10 | 3679 days | |
1.65 | 1% |
| Mike | 5/10 | 3680 days | |
1.75 | 2% |
| Debbie Mossman | 9/10 | 3686 days | 1.45 | 1% | |
| Johann | 10/10 | 3687 days | |
1.74 | 2% |
| Carina | 10/10 | 3689 days | |
1.74 | 2% |
| Mat | 8/10 | 3728 days | |
1.67 | 1% |
| Anette | 7/10 | 3730 days | |
1.67 | 1% |
| midlands_missus | 8/10 | 3733 days | 1.39 | 1% | |
| David | 7/10 | 3788 days | |
1.57 | 1% |
| Suyin | 10/10 | 3808 days | |
1.54 | 1% |
| Franz | 10/10 | 3982 days | |
1.25 | 1% |
| Jennifer Baulch | 7/10 | 3987 days | |
1.25 | 1% |
| George Jeffs | 10/10 | 3990 days | |
1.24 | 1% |
| Jacob | 9/10 | 3994 days | |
1.23 | 1% |
| Aharon | 10/10 | 4009 days | |
1.21 | 1% |
| D.A. Mulder | 8/10 | 4010 days | |
1.21 | 1% |
| Knol | 8/10 | 4012 days | |
1.2 | 1% |
| Cole Penelope | 8/10 | 4015 days | |
1.2 | 1% |
| Jody | 7/10 | 4023 days | |
1.19 | 1% |
| Anna | 5/10 | 4023 days | |
1.19 | 1% |
| Pauline Thai | 8/10 | 4030 days | |
1.18 | 1% |
| Dan Adamson | 8/10 | 4030 days | |
1.18 | 1% |
| Stephen Brightman | 8/10 | 4039 days | |
1.16 | 1% |
| Madeleine Rowland | 8/10 | 4039 days | |
1.16 | 1% |
| Bronwyn Gaby | 9/10 | 4057 days | |
1.13 | 1% |
| Free_ride | 9/10 | 4073 days | 0.92 | 0% | |
| Michael | 9/10 | 4096 days | |
1.07 | 1% |
| Raul | 10/10 | 4346 days | |
0.66 | 0% |
| TeamFlorida | 9/10 | 4348 days | |
0.65 | 0% |
| TeamFlorida | 8/10 | 4348 days | |
0.65 | 0% |
| James | 9/10 | 4361 days | |
0.63 | 0% |
| Rudi | 10/10 | 4365 days | |
0.62 | 0% |
| Rolf Kruger | 10/10 | 4389 days | |
0.59 | 0% |
| Brian | 10/10 | 4393 days | |
0.58 | 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
-7.28% 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 364 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 361 | -7.22% |
| 362 | -7.24% |
| 363 | -7.26% |
| 364 | -7.28% |
| 365 | -7.30% |
| 366 | -7.32% |
| 367 | -7.34% |
| … | … |
Final Ranking Score
77%
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.