Hi, 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 Sky Tower.
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.
Sky Tower
Valid Reviews
191 Valid Reviews
The Sky Tower experience has a total of 192 reviews. There are 191 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 191 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 15 |
|
8% |
| 9/10 | 35 |
|
18% |
| 8/10 | 55 |
|
29% |
| 7/10 | 52 |
|
27% |
| 6/10 | 12 |
|
6% |
| 5/10 | 18 |
|
9% |
| 4/10 | 3 |
|
2% |
| 3/10 | 1 |
|
1% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
75.71% Average
The raw data average (mean) for all the Sky Tower valid reviews is 75.71% and is based on 191 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 191 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 | 13 |
|
7% |
| 9/10 | 32 |
|
18% |
| 8/10 | 51 |
|
29% |
| 7/10 | 51 |
|
29% |
| 6/10 | 11 |
|
6% |
| 5/10 | 16 |
|
9% |
| 4/10 | 1 |
|
1% |
| 3/10 | 1 |
|
1% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
75.91% Average
The raw data average (mean) for all the Sky Tower face-to-face reviews is 75.91% 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
71.33%
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 |
|---|---|---|---|
| Anne N | 4/10 | 952 days | 100% |
| Eric | 5/10 | 3393 days | 3% |
| Martin Fersebner | 7/10 | 3399 days | 4% |
| Alonso | 8/10 | 3455 days | 4% |
| Andres Gonzalez | 6/10 | 3473 days | 4% |
| Eveline | 8/10 | 3486 days | 4% |
| Anna Gruenewald | 5/10 | 3490 days | 3% |
| Camilla Geert | 6/10 | 3702 days | 2% |
| Sabrina Schneider | 8/10 | 3708 days | 3% |
| Laura Cosquer | 7/10 | 3710 days | 3% |
| Frenziska Schmid | 7/10 | 3723 days | 3% |
| Johanna Kuch | 7/10 | 3751 days | 2% |
| Carmen Pramstaller | 9/10 | 3753 days | 3% |
| Liza Braun | 8/10 | 3754 days | 3% |
| Markus Wabing | 8/10 | 3756 days | 3% |
| Uschi Pongratz | 8/10 | 3756 days | 3% |
| Nita Oussoren | 8/10 | 3756 days | 3% |
| Jessica Ruhland | 6/10 | 3756 days | 2% |
| David Soukal | 7/10 | 3757 days | 2% |
| Sabine Bergen | 7/10 | 3764 days | 2% |
| Sophie NIemann | 9/10 | 3769 days | 3% |
| Josephine | 7/10 | 3777 days | 2% |
| Pierre and Alexandra | 7/10 | 3809 days | 2% |
| Selma Krap | 9/10 | 3815 days | 2% |
| Blandine Giusti | 7/10 | 4077 days | 1% |
| Polly Rider | 8/10 | 4182 days | 0% |
| Greg Gilmore | 8/10 | 4415 days | 2% |
| Fiona Hawkins | 7/10 | 4415 days | 2% |
| Pavel Macek | 9/10 | 4424 days | 2% |
| Anna Sternberg | 5/10 | 4454 days | 1% |
| Roy Matthieu | 6/10 | 4464 days | 2% |
| Julie Ledanois | 7/10 | 4464 days | 2% |
| Pierre Gentile | 6/10 | 4464 days | 2% |
| Cindy Benayoum | 7/10 | 4464 days | 2% |
| Olivia | 8/10 | 4465 days | 2% |
| Callum | 7/10 | 4465 days | 2% |
| Sophia | 6/10 | 4470 days | 2% |
| Andreas Zapke | 8/10 | 4509 days | 2% |
| Simone Pickert | 7/10 | 4510 days | 2% |
| Cindy Bonton | 7/10 | 4520 days | 2% |
| Menu | 8/10 | 4808 days | 2% |
| Christian | 5/10 | 4811 days | 1% |
| Nora | 7/10 | 4811 days | 2% |
| Michael Nolan | 10/10 | 4818 days | 2% |
| Sebastian | 8/10 | 4822 days | 2% |
| Tobi | 9/10 | 4823 days | 2% |
| Chantal Mortel | 7/10 | 4823 days | 2% |
| Alessa Ndra | 10/10 | 4828 days | 2% |
| Fabian Brand | 5/10 | 4839 days | 1% |
| Kyle Guffei | 10/10 | 4841 days | 2% |
| Henrik Steinruecken | 8/10 | 4890 days | 2% |
| Doan | 6/10 | 4913 days | 2% |
| Judy | 10/10 | 4917 days | 2% |
| Petra | 7/10 | 4919 days | 2% |
| Selwindt | 9/10 | 5177 days | 2% |
| Mats Harstedt | 7/10 | 5192 days | 2% |
| Mark Bogton | 8/10 | 5192 days | 2% |
| R E Webb | 9/10 | 5195 days | 2% |
| Roland Hofmann | 7/10 | 5198 days | 2% |
| Lepied | 7/10 | 5199 days | 2% |
| Carla Mathieu | 10/10 | 5202 days | 2% |
| Graham Swinyard | 7/10 | 5206 days | 2% |
| Kurt Furuskar | 9/10 | 5223 days | 2% |
| _mel_ | 8/10 | 5243 days | 2% |
| Theresa | 9/10 | 5290 days | 2% |
| Frans van der Kroon | 8/10 | 5291 days | 2% |
| Elke & Charlotte | 8/10 | 5294 days | 2% |
| Gary A | 9/10 | 5304 days | 2% |
| katel86 | 5/10 | 5365 days | 1% |
| Dogoneit | 4/10 | 5518 days | 1% |
| Shoko Watanabe | 8/10 | 5518 days | 2% |
| Markus | 8/10 | 5521 days | 2% |
| Binder | 8/10 | 5533 days | 2% |
| Nicola Thackray | 7/10 | 5536 days | 2% |
| Katy Bourne | 8/10 | 5543 days | 2% |
| Michael Assfalg | 8/10 | 5548 days | 2% |
| Jon_and_Family | 9/10 | 5549 days | 2% |
| M Holierhoek | 7/10 | 5551 days | 2% |
| Berger | 9/10 | 5553 days | 2% |
| Ron Pantzer | 7/10 | 5558 days | 2% |
| Julian Seizinger | 9/10 | 5564 days | 2% |
| Olivia Carvill | 8/10 | 5565 days | 2% |
| Jarob Brezigar | 5/10 | 5570 days | 1% |
| Markus Richert | 6/10 | 5571 days | 2% |
| Christina Fischer | 5/10 | 5572 days | 1% |
| Bruce & Bonnie Childs | 9/10 | 5576 days | 2% |
| hendrik king | 9/10 | 5608 days | 2% |
| craigy | 6/10 | 5761 days | 2% |
| Monica Askew | 9/10 | 5831 days | 2% |
| Adam Gerrard | 8/10 | 5844 days | 2% |
| Sophie & Joffrey | 7/10 | 5848 days | 2% |
| steveE | 7/10 | 5853 days | 2% |
| Alan & Lorna | 8/10 | 5907 days | 2% |
| Mr and Mrs Scott | 5/10 | 5914 days | 1% |
| B Willmore | 10/10 | 5916 days | 2% |
| Pete H | 10/10 | 5923 days | 2% |
| Johan Wisselo | 7/10 | 5934 days | 2% |
| Tanja Titze | 10/10 | 5935 days | 2% |
| Groen | 8/10 | 5939 days | 2% |
| Kasper | 5/10 | 5940 days | 1% |
| Laura Walters | 8/10 | 5941 days | 2% |
| Ines Diana | 8/10 | 5941 days | 2% |
| uleugel | 8/10 | 5951 days | 2% |
| deanlaw | 9/10 | 5987 days | 2% |
| menzel | 8/10 | 5987 days | 2% |
| blokzyl | 7/10 | 5993 days | 2% |
| braunweiler | 9/10 | 5993 days | 2% |
| Marshall | 9/10 | 6006 days | 2% |
| Karin Linder | 9/10 | 6008 days | 2% |
| Lisette X | 7/10 | 6012 days | 2% |
| Louis Duhaime | 8/10 | 6015 days | 2% |
| paulandcathy | 8/10 | 6059 days | 2% |
| clairet | 7/10 | 6113 days | 2% |
| johannac | 7/10 | 6123 days | 2% |
| Miranda | 8/10 | 6126 days | 2% |
| Charles Lyne | 10/10 | 6218 days | 2% |
| Andrew Lonsdale | 5/10 | 6236 days | 1% |
| RubyJ | 8/10 | 6240 days | 2% |
| arthurwa | 10/10 | 6248 days | 2% |
| Peter Jackie | 7/10 | 6251 days | 2% |
| FiensG | 8/10 | 6267 days | 2% |
| Erik | 7/10 | 6271 days | 2% |
| Grimm | 9/10 | 6272 days | 2% |
| Marlena | 10/10 | 6272 days | 2% |
| Nick | 9/10 | 6277 days | 2% |
| RichardE | 9/10 | 6283 days | 2% |
| Sarah | 7/10 | 6285 days | 2% |
| Manfred | 9/10 | 6285 days | 2% |
| Majken | 5/10 | 6292 days | 1% |
| AurelieD | 7/10 | 6295 days | 2% |
| Nanno | 7/10 | 6299 days | 2% |
| MartinD | 7/10 | 6306 days | 2% |
| Danielle | 10/10 | 6313 days | 2% |
| Sonja | 8/10 | 6316 days | 2% |
| Maettu | 8/10 | 6338 days | 2% |
| Stephanie | 9/10 | 6348 days | 2% |
| Katherine | 7/10 | 6353 days | 2% |
| Claire | 7/10 | 6361 days | 2% |
| helen | 8/10 | 6361 days | 2% |
| Maggie | 9/10 | 6367 days | 2% |
| Patricia | 10/10 | 6370 days | 2% |
| Antonella | 9/10 | 6423 days | 2% |
| Gray | 5/10 | 6484 days | 1% |
| Thomas Bachmann | 8/10 | 6497 days | 2% |
| Leanne Priestley | 8/10 | 6619 days | 2% |
| Amy Clark | 7/10 | 6619 days | 2% |
| Toby | 9/10 | 6620 days | 2% |
| Vikki | 10/10 | 6624 days | 2% |
| Ovin | 9/10 | 6624 days | 2% |
| AlanN316 | 9/10 | 6629 days | 2% |
| Yayami Kimura | 9/10 | 6631 days | 2% |
| Demo | 6/10 | 6632 days | 2% |
| RhysP | 8/10 | 6633 days | 2% |
| Sarah Maudsley | 7/10 | 6634 days | 2% |
| Benjamin Krein | 8/10 | 6639 days | 2% |
| Tina Daly | 6/10 | 6640 days | 2% |
| Ohad | 9/10 | 6641 days | 2% |
| Kathy Hawey | 8/10 | 6647 days | 2% |
| David Buckley | 9/10 | 6648 days | 2% |
| Jackie Horwell | 10/10 | 6649 days | 2% |
| Carla | 7/10 | 6660 days | 2% |
| Hanna | 7/10 | 6661 days | 2% |
| Reina Lohaye | 7/10 | 6663 days | 2% |
| Line Oehlinschloger | 5/10 | 6687 days | 1% |
| Tim | 8/10 | 6688 days | 2% |
| Mette de Graap | 7/10 | 6690 days | 2% |
| Andrew Porter | 8/10 | 6696 days | 2% |
| Gerber Liselotte | 9/10 | 6722 days | 2% |
| Samuel Brejeon | 7/10 | 6733 days | 2% |
| Christin | 8/10 | 6738 days | 2% |
| Orla | 3/10 | 6738 days | 1% |
| Pat Brewster | 7/10 | 6850 days | 2% |
| Natalia | 8/10 | 6934 days | 2% |
| Miriam&Eva | 8/10 | 6938 days | 2% |
| Caroline | 8/10 | 6954 days | 2% |
| Klaus | 4/10 | 6955 days | 1% |
| Bonnie | 6/10 | 6958 days | 2% |
| Franklin | 7/10 | 6958 days | 2% |
| Stephanie | 8/10 | 6959 days | 2% |
| andrew julie | 7/10 | 6972 days | 2% |
| Nancy Bill | 7/10 | 6972 days | 2% |
| Daniel | 7/10 | 6974 days | 2% |
| clairekidd | 5/10 | 6977 days | 1% |
| Fred Highsmith | 8/10 | 6978 days | 2% |
| Hannah | 8/10 | 6988 days | 2% |
| Detlef | 5/10 | 6992 days | 1% |
| Delgroot | 8/10 | 7006 days | 2% |
| Herman&Ineke | 5/10 | 7017 days | 1% |
| Janne | 5/10 | 7018 days | 1% |
| Rolf | 9/10 | 7026 days | 2% |
| Nicole | 8/10 | 7026 days | 2% |
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 Sky Tower experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-2.91% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 86 days. However the Sky Tower 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 Sky Tower experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -2.87% |
| 198 | -2.88% |
| 199 | -2.90% |
| 200 | -2.91% |
| 201 | -2.93% |
| 202 | -2.94% |
| 203 | -2.96% |
| … | … |
Balancing Adjustment
7.93% Adjustment
Every experience's review score is adjusted to balance out the disproportional number of negative reviews that are contributed.
You won't be surprised to learn that disgruntled customers are more likely to leave a review than happy ones. They are motivated to share their experience and warn others. We consider this a good thing and it's why reading the reviews is important. However we've learned it can misrepresent the experience in a more overall sense.
We apply a balancing adjustment to counteract this effect and ensure the ranking score is a more fair representation of the experience. This adjustment is applied equally to all experiences.
Final Ranking Score
76%
The final ranking score once any adjustments, ratings, and rounding has been applied. This value is recalculated each day and a short rolling average is applied. Therefore it may not be precisely accurate based on the other values presented.