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
84.90%
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 | 381 days |  |
92.4 | 100% |
| Dan Coates | 9/10 | 614 days | |
49.99 | 54% |
| Dominik | 9/10 | 614 days | |
49.99 | 54% |
| Holloway | 10/10 | 637 days | |
45.89 | 49% |
| Christina | 6/10 | 705 days | |
34.92 | 37% |
| Barbara Knops | 9/10 | 707 days | |
34.63 | 37% |
| Manu Liberta | 10/10 | 717 days | |
33.17 | 35% |
| Bruno | 9/10 | 727 days | |
31.75 | 34% |
| Kirsty Smith | 10/10 | 750 days | |
28.63 | 30% |
| Sophia Satter | 8/10 | 761 days | |
27.21 | 29% |
| Afiya Levy | 10/10 | 982 days | |
8.43 | 8% |
| Johannes Eisel | 6/10 | 991 days | |
8.06 | 8% |
| Alexander Mattea | 5/10 | 991 days | |
8.06 | 8% |
| Timea Bagosi | 9/10 | 993 days | 6.65 | 6% | |
| Riviere | 8/10 | 1005 days | |
7.54 | 7% |
| Dani | 8/10 | 1007 days | |
7.47 | 7% |
| Benoit Leclerc | 7/10 | 1009 days | |
7.41 | 7% |
| Anna Stoehr | 10/10 | 1027 days | |
6.88 | 7% |
| Kai Krchmar | 6/10 | 1080 days | |
6.04 | 6% |
| Kristina Farkas | 5/10 | 1375 days | |
5.54 | 5% |
| Sophia Kadel | 10/10 | 1405 days | |
5.49 | 5% |
| Laura and Marie | 7/10 | 1411 days | |
5.48 | 5% |
| Rachel S | 10/10 | 1418 days | 4.56 | 4% | |
| Joris Giullemot | 8/10 | 1727 days | |
4.96 | 5% |
| Laura Metz | 7/10 | 1738 days | |
4.94 | 5% |
| Hubertus Thost | 7/10 | 1738 days | |
4.94 | 5% |
| Amanda | 4/10 | 1753 days | 3.81 | 3% | |
| S B | 10/10 | 1766 days | |
4.9 | 5% |
| M K | 10/10 | 1766 days | |
4.9 | 5% |
| Maya Bakker-deDreu | 8/10 | 1774 days | |
4.88 | 5% |
| Christin Woelk | 9/10 | 2054 days | |
4.42 | 4% |
| Maria Klister | 7/10 | 2074 days | |
4.39 | 4% |
| Lydia Kleinkoenen | 9/10 | 2094 days | |
4.36 | 4% |
| Jessica Grewe | 9/10 | 2094 days | |
4.36 | 4% |
| Hannah Lia-Isis Kubillus | 9/10 | 2094 days | |
4.36 | 4% |
| Jan Zimmerman | 8/10 | 2105 days | |
4.34 | 4% |
| Margaret and Derek McNeil | 10/10 | 2165 days | |
4.24 | 4% |
| Frank and Suzanne | 8/10 | 2180 days | |
4.22 | 4% |
| RollingMoon | 8/10 | 2241 days | 3.43 | 3% | |
| Marcel & Kim Meichtry | 7/10 | 2461 days | |
3.75 | 3% |
| Howell Davies | 5/10 | 2464 days | |
3.75 | 3% |
| Baas | 7/10 | 2464 days | |
3.75 | 3% |
| Pete & Pat Etheridge | 8/10 | 2464 days | |
3.75 | 3% |
| Siegfried Richter | 7/10 | 2465 days | |
3.75 | 3% |
| Melanie Mathiak | 10/10 | 2467 days | |
3.74 | 3% |
| Sig Schrattner | 8/10 | 2467 days | |
3.74 | 3% |
| Rebecca Doehl | 7/10 | 2468 days | |
3.74 | 3% |
| Seth & Carla | 7/10 | 2469 days | |
3.74 | 3% |
| Gabriele Wendt | 9/10 | 2469 days | |
3.74 | 3% |
| Tadej Ferjan | 8/10 | 2469 days | |
3.74 | 3% |
| Mary Mitchell | 10/10 | 2469 days | |
3.74 | 3% |
| Emily Wikston | 9/10 | 2470 days | |
3.74 | 3% |
| Andreas & Leonie Fehr | 10/10 | 2476 days | |
3.73 | 3% |
| Horst Langstein | 9/10 | 2477 days | |
3.73 | 3% |
| Marco Scheiber | 9/10 | 2478 days | |
3.73 | 3% |
| Friedrich Kaltner | 10/10 | 2480 days | |
3.72 | 3% |
| Frank & Julia | 10/10 | 2483 days | |
3.72 | 3% |
| Thyg Lingdal | 10/10 | 2483 days | |
3.72 | 3% |
| Nicole van Bergen | 8/10 | 2483 days | |
3.72 | 3% |
| Mike & April Prince | 7/10 | 2497 days | |
3.7 | 3% |
| Alfred & Henrike | 8/10 | 2509 days | |
3.68 | 3% |
| Lyn Stainton | 6/10 | 2558 days | |
3.6 | 3% |
| Ken Talan | 10/10 | 2786 days | |
3.22 | 3% |
| Jon_and_Family | 9/10 | 2790 days | 2.68 | 2% | |
| Gertz | 10/10 | 2794 days | |
3.21 | 3% |
| Katarina Bokor | 8/10 | 2798 days | |
3.2 | 3% |
| Mark Franklin | 6/10 | 2798 days | |
3.2 | 3% |
| Gordon Agent | 10/10 | 2798 days | |
3.2 | 3% |
| Maureen Hardy | 8/10 | 2798 days | |
3.2 | 3% |
| AJ van Pelt | 8/10 | 2798 days | |
3.2 | 3% |
| Werner and Rita | 9/10 | 2805 days | |
3.19 | 3% |
| Richard Dudfield | 10/10 | 2807 days | |
3.19 | 3% |
| Sayaka | 7/10 | 2807 days | |
3.19 | 3% |
| Urs and Isabella | 7/10 | 2808 days | |
3.18 | 3% |
| Juliane Kleiu | 10/10 | 2811 days | |
3.18 | 3% |
| Linda Kremer | 9/10 | 2812 days | |
3.18 | 3% |
| Rebecca Johnston | 9/10 | 2812 days | |
3.18 | 3% |
| David Mellard | 10/10 | 2813 days | |
3.18 | 3% |
| Bruce & Elaine Chote | 10/10 | 2813 days | |
3.18 | 3% |
| Paul Nickson | 8/10 | 2813 days | |
3.18 | 3% |
| Monique | 8/10 | 2813 days | |
3.18 | 3% |
| Beat & Connie | 10/10 | 2815 days | |
3.17 | 3% |
| Alex Stil | 9/10 | 2815 days | |
3.17 | 3% |
| Pein van Nosrt | 7/10 | 2820 days | |
3.16 | 3% |
| Raith | 9/10 | 2820 days | |
3.16 | 3% |
| Elise van Haastert | 8/10 | 2820 days | |
3.16 | 3% |
| Claudia | 10/10 | 2822 days | |
3.16 | 3% |
| Carolin Ranner | 6/10 | 2822 days | |
3.16 | 3% |
| Winskowsky | 9/10 | 2823 days | |
3.16 | 3% |
| Hvid | 9/10 | 2837 days | |
3.14 | 3% |
| Judith K. | 6/10 | 2839 days | |
3.13 | 3% |
| Ruben and Jetske | 7/10 | 2839 days | |
3.13 | 3% |
| Roy Seymour | 9/10 | 2840 days | |
3.13 | 3% |
| Tom Hill | 10/10 | 2844 days | |
3.12 | 3% |
| Ruua Reyrink | 7/10 | 2845 days | |
3.12 | 3% |
| Patrick Hugener | 9/10 | 2845 days | |
3.12 | 3% |
| JohnHaestad | 4/10 | 2849 days | 2.42 | 2% | |
| dollimyxture | 10/10 | 2880 days | 2.55 | 2% | |
| aggiemary04 | 10/10 | 2972 days | 2.43 | 2% | |
| victoriauk | 4/10 | 3094 days | |
2.56 | 2% |
| Baumgarten | 8/10 | 3122 days | |
2.67 | 2% |
| travelbunnyadventures | 8/10 | 3125 days | 2.22 | 2% | |
| Don & Geraldine | 10/10 | 3161 days | |
2.6 | 2% |
| Matthias & Ceristiane | 8/10 | 3173 days | |
2.58 | 2% |
| Hilary and Chris Ayton | 9/10 | 3174 days | |
2.58 | 2% |
| Lis & Rob Tate | 9/10 | 3176 days | |
2.58 | 2% |
| ccthornton100 | 10/10 | 3186 days | 2.14 | 2% | |
| Bob Kusesia | 10/10 | 3187 days | |
2.56 | 2% |
| Yssel de Schepper | 7/10 | 3192 days | |
2.55 | 2% |
| Janny Meerdinnk Veldboow | 7/10 | 3192 days | |
2.55 | 2% |
| Arie Ascher | 9/10 | 3193 days | |
2.55 | 2% |
| Wolfgang Engelke | 10/10 | 3195 days | |
2.55 | 2% |
| Thomas K | 9/10 | 3195 days | |
2.55 | 2% |
| Loleit | 7/10 | 3207 days | |
2.53 | 2% |
| Mattias Thorm | 9/10 | 3208 days | |
2.53 | 2% |
| Vincente Garrido | 4/10 | 3209 days | |
2.38 | 2% |
| R Gilge | 10/10 | 3210 days | |
2.52 | 2% |
| Erik Hummelmose | 8/10 | 3210 days | |
2.52 | 2% |
| Ian E | 6/10 | 3210 days | |
2.52 | 2% |
| Nadine Schaee | 9/10 | 3211 days | |
2.52 | 2% |
| Belinda Godhard | 2/10 | 3211 days | |
2.27 | 2% |
| Uwe Rieper | 10/10 | 3213 days | |
2.52 | 2% |
| E.M. Prideaux | 10/10 | 3228 days | |
2.49 | 2% |
| Elizabeth E | 8/10 | 3230 days | |
2.49 | 2% |
| Stevens Frans | 8/10 | 3231 days | |
2.49 | 2% |
| Heinrich Hax | 9/10 | 3234 days | |
2.48 | 2% |
| tanh | 7/10 | 3261 days | |
2.44 | 2% |
| Stephanie Steiner | 8/10 | 3280 days | |
2.41 | 2% |
| Julia May | 9/10 | 3287 days | |
2.4 | 2% |
| X Neils | 7/10 | 3298 days | |
2.38 | 2% |
| Sarah Smith | 5/10 | 3302 days | |
2.37 | 2% |
| Anna | 6/10 | 3306 days | 1.97 | 1% | |
| OliverG1 | 7/10 | 3508 days | |
2.03 | 1% |
| Philipp | 5/10 | 3520 days | |
2.01 | 1% |
| JasminA | 5/10 | 3520 days | |
2.01 | 1% |
| ChristinaV | 8/10 | 3529 days | |
2.0 | 1% |
| JuergenSchnitzer | 9/10 | 3536 days | |
1.99 | 1% |
| AstridVG | 7/10 | 3536 days | |
1.99 | 1% |
| NatasjaV | 7/10 | 3538 days | |
1.98 | 1% |
| JimmyK | 7/10 | 3538 days | |
1.98 | 1% |
| MarcoJ | 9/10 | 3540 days | |
1.98 | 1% |
| LucyPoland | 9/10 | 3541 days | |
1.98 | 1% |
| Stolz | 7/10 | 3543 days | |
1.98 | 1% |
| BrzezinskaM | 10/10 | 3545 days | |
1.97 | 1% |
| AndreB | 10/10 | 3545 days | |
1.97 | 1% |
| Linda | 7/10 | 3551 days | |
1.96 | 1% |
| Susan | 8/10 | 3552 days | |
1.96 | 1% |
| Byleveld | 7/10 | 3553 days | |
1.96 | 1% |
| JoseB | 8/10 | 3554 days | |
1.96 | 1% |
| JetteG | 10/10 | 3554 days | |
1.96 | 1% |
| CarolF | 7/10 | 3555 days | |
1.96 | 1% |
| Rachel | 9/10 | 3569 days | |
1.93 | 1% |
| Claire | 7/10 | 3569 days | |
1.93 | 1% |
| Denise | 8/10 | 3570 days | |
1.93 | 1% |
| Denk | 8/10 | 3582 days | |
1.91 | 1% |
| Klalis | 10/10 | 3584 days | |
1.91 | 1% |
| Thomas | 4/10 | 3588 days | |
1.79 | 1% |
| Mike | 5/10 | 3589 days | |
1.9 | 1% |
| Debbie Mossman | 9/10 | 3595 days | 1.58 | 1% | |
| Johann | 10/10 | 3596 days | |
1.89 | 1% |
| Carina | 10/10 | 3598 days | |
1.89 | 1% |
| Mat | 8/10 | 3637 days | |
1.82 | 1% |
| Anette | 7/10 | 3639 days | |
1.82 | 1% |
| midlands_missus | 8/10 | 3642 days | 1.51 | 1% | |
| David | 7/10 | 3697 days | |
1.72 | 1% |
| Suyin | 10/10 | 3718 days | |
1.69 | 1% |
| Franz | 10/10 | 3891 days | |
1.4 | 1% |
| Jennifer Baulch | 7/10 | 3896 days | |
1.4 | 1% |
| George Jeffs | 10/10 | 3899 days | |
1.39 | 1% |
| Jacob | 9/10 | 3903 days | |
1.38 | 1% |
| Aharon | 10/10 | 3918 days | |
1.36 | 1% |
| D.A. Mulder | 8/10 | 3919 days | |
1.36 | 1% |
| Knol | 8/10 | 3921 days | |
1.35 | 1% |
| Cole Penelope | 8/10 | 3924 days | |
1.35 | 1% |
| Jody | 7/10 | 3932 days | |
1.34 | 1% |
| Anna | 5/10 | 3932 days | |
1.34 | 1% |
| Pauline Thai | 8/10 | 3939 days | |
1.32 | 1% |
| Dan Adamson | 8/10 | 3939 days | |
1.32 | 1% |
| Stephen Brightman | 8/10 | 3948 days | |
1.31 | 1% |
| Madeleine Rowland | 8/10 | 3948 days | |
1.31 | 1% |
| Bronwyn Gaby | 9/10 | 3966 days | |
1.28 | 1% |
| Free_ride | 9/10 | 3982 days | 1.05 | 0% | |
| Michael | 9/10 | 4005 days | |
1.22 | 1% |
| Raul | 10/10 | 4255 days | |
0.81 | 0% |
| TeamFlorida | 9/10 | 4257 days | |
0.8 | 0% |
| TeamFlorida | 8/10 | 4257 days | |
0.8 | 0% |
| James | 9/10 | 4270 days | |
0.78 | 0% |
| Rudi | 10/10 | 4274 days | |
0.77 | 0% |
| Rolf Kruger | 10/10 | 4298 days | |
0.73 | 0% |
| Brian | 10/10 | 4302 days | |
0.73 | 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
-7.24% 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 362 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 359 | -7.18% |
| 360 | -7.20% |
| 361 | -7.22% |
| 362 | -7.24% |
| 363 | -7.26% |
| 364 | -7.28% |
| 365 | -7.30% |
| … | … |
Final Ranking Score
78%
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.