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.
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Sky Tower
Valid Reviews
191 Valid Reviews
The Sky Tower experience has a total of 191 valid reviews. There are no 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 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
68.69%
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 | 539 days | 100% |
| Eric | 5/10 | 2980 days | 3% |
| Martin Fersebner | 7/10 | 2986 days | 4% |
| Alonso | 8/10 | 3042 days | 4% |
| Andres Gonzalez | 6/10 | 3060 days | 3% |
| Eveline | 8/10 | 3073 days | 4% |
| Anna Gruenewald | 5/10 | 3077 days | 3% |
| Camilla Geert | 6/10 | 3289 days | 2% |
| Sabrina Schneider | 8/10 | 3295 days | 3% |
| Laura Cosquer | 7/10 | 3297 days | 3% |
| Frenziska Schmid | 7/10 | 3310 days | 3% |
| Johanna Kuch | 7/10 | 3338 days | 3% |
| Carmen Pramstaller | 9/10 | 3340 days | 3% |
| Liza Braun | 8/10 | 3341 days | 3% |
| Markus Wabing | 8/10 | 3343 days | 3% |
| Uschi Pongratz | 8/10 | 3343 days | 3% |
| Nita Oussoren | 8/10 | 3343 days | 3% |
| Jessica Ruhland | 6/10 | 3343 days | 2% |
| David Soukal | 7/10 | 3344 days | 3% |
| Sabine Bergen | 7/10 | 3351 days | 3% |
| Sophie NIemann | 9/10 | 3356 days | 3% |
| Josephine | 7/10 | 3364 days | 3% |
| Pierre and Alexandra | 7/10 | 3396 days | 2% |
| Selma Krap | 9/10 | 3402 days | 3% |
| Blandine Giusti | 7/10 | 3664 days | 1% |
| Polly Rider | 8/10 | 3769 days | 1% |
| Greg Gilmore | 8/10 | 4002 days | 0% |
| Fiona Hawkins | 7/10 | 4002 days | 0% |
| Pavel Macek | 9/10 | 4011 days | 0% |
| Anna Sternberg | 5/10 | 4041 days | 0% |
| Roy Matthieu | 6/10 | 4051 days | 0% |
| Julie Ledanois | 7/10 | 4051 days | 0% |
| Pierre Gentile | 6/10 | 4051 days | 0% |
| Cindy Benayoum | 7/10 | 4051 days | 0% |
| Olivia | 8/10 | 4052 days | 0% |
| Callum | 7/10 | 4052 days | 0% |
| Sophia | 6/10 | 4057 days | 0% |
| Andreas Zapke | 8/10 | 4096 days | 0% |
| Simone Pickert | 7/10 | 4097 days | 0% |
| Cindy Bonton | 7/10 | 4107 days | 0% |
| Menu | 8/10 | 4395 days | 1% |
| Christian | 5/10 | 4398 days | 0% |
| Nora | 7/10 | 4398 days | 1% |
| Michael Nolan | 10/10 | 4405 days | 1% |
| Sebastian | 8/10 | 4409 days | 1% |
| Tobi | 9/10 | 4410 days | 1% |
| Chantal Mortel | 7/10 | 4410 days | 1% |
| Alessa Ndra | 10/10 | 4415 days | 1% |
| Fabian Brand | 5/10 | 4426 days | 0% |
| Kyle Guffei | 10/10 | 4428 days | 1% |
| Henrik Steinruecken | 8/10 | 4477 days | 1% |
| Doan | 6/10 | 4500 days | 1% |
| Judy | 10/10 | 4504 days | 1% |
| Petra | 7/10 | 4506 days | 1% |
| Selwindt | 9/10 | 4764 days | 1% |
| Mats Harstedt | 7/10 | 4779 days | 1% |
| Mark Bogton | 8/10 | 4779 days | 1% |
| R E Webb | 9/10 | 4782 days | 1% |
| Roland Hofmann | 7/10 | 4785 days | 1% |
| Lepied | 7/10 | 4786 days | 1% |
| Carla Mathieu | 10/10 | 4789 days | 1% |
| Graham Swinyard | 7/10 | 4793 days | 1% |
| Kurt Furuskar | 9/10 | 4810 days | 1% |
| _mel_ | 8/10 | 4830 days | 1% |
| Theresa | 9/10 | 4877 days | 1% |
| Frans van der Kroon | 8/10 | 4878 days | 1% |
| Elke & Charlotte | 8/10 | 4881 days | 1% |
| Gary A | 9/10 | 4891 days | 1% |
| katel86 | 5/10 | 4952 days | 0% |
| Dogoneit | 4/10 | 5105 days | 0% |
| Shoko Watanabe | 8/10 | 5105 days | 1% |
| Markus | 8/10 | 5108 days | 1% |
| Binder | 8/10 | 5120 days | 1% |
| Nicola Thackray | 7/10 | 5123 days | 1% |
| Katy Bourne | 8/10 | 5130 days | 1% |
| Michael Assfalg | 8/10 | 5135 days | 1% |
| Jon_and_Family | 9/10 | 5136 days | 1% |
| M Holierhoek | 7/10 | 5138 days | 1% |
| Berger | 9/10 | 5140 days | 1% |
| Ron Pantzer | 7/10 | 5145 days | 1% |
| Julian Seizinger | 9/10 | 5151 days | 1% |
| Olivia Carvill | 8/10 | 5152 days | 1% |
| Jarob Brezigar | 5/10 | 5157 days | 0% |
| Markus Richert | 6/10 | 5158 days | 1% |
| Christina Fischer | 5/10 | 5159 days | 0% |
| Bruce & Bonnie Childs | 9/10 | 5163 days | 1% |
| hendrik king | 9/10 | 5195 days | 1% |
| craigy | 6/10 | 5348 days | 1% |
| Monica Askew | 9/10 | 5418 days | 1% |
| Adam Gerrard | 8/10 | 5431 days | 1% |
| Sophie & Joffrey | 7/10 | 5435 days | 1% |
| steveE | 7/10 | 5440 days | 1% |
| Alan & Lorna | 8/10 | 5494 days | 1% |
| Mr and Mrs Scott | 5/10 | 5501 days | 0% |
| B Willmore | 10/10 | 5503 days | 1% |
| Pete H | 10/10 | 5510 days | 1% |
| Johan Wisselo | 7/10 | 5521 days | 1% |
| Tanja Titze | 10/10 | 5522 days | 1% |
| Groen | 8/10 | 5526 days | 1% |
| Kasper | 5/10 | 5527 days | 0% |
| Laura Walters | 8/10 | 5528 days | 1% |
| Ines Diana | 8/10 | 5528 days | 1% |
| uleugel | 8/10 | 5538 days | 1% |
| deanlaw | 9/10 | 5574 days | 1% |
| menzel | 8/10 | 5574 days | 1% |
| blokzyl | 7/10 | 5580 days | 1% |
| braunweiler | 9/10 | 5580 days | 1% |
| Marshall | 9/10 | 5593 days | 1% |
| Karin Linder | 9/10 | 5595 days | 1% |
| Lisette X | 7/10 | 5599 days | 1% |
| Louis Duhaime | 8/10 | 5602 days | 1% |
| paulandcathy | 8/10 | 5646 days | 1% |
| clairet | 7/10 | 5700 days | 1% |
| johannac | 7/10 | 5710 days | 1% |
| Miranda | 8/10 | 5713 days | 1% |
| Charles Lyne | 10/10 | 5805 days | 1% |
| Andrew Lonsdale | 5/10 | 5823 days | 0% |
| RubyJ | 8/10 | 5827 days | 1% |
| arthurwa | 10/10 | 5835 days | 1% |
| Peter Jackie | 7/10 | 5838 days | 1% |
| FiensG | 8/10 | 5854 days | 1% |
| Erik | 7/10 | 5857 days | 1% |
| Grimm | 9/10 | 5858 days | 1% |
| Marlena | 10/10 | 5858 days | 1% |
| Nick | 9/10 | 5863 days | 1% |
| RichardE | 9/10 | 5870 days | 1% |
| Sarah | 7/10 | 5871 days | 1% |
| Manfred | 9/10 | 5871 days | 1% |
| Majken | 5/10 | 5878 days | 0% |
| AurelieD | 7/10 | 5882 days | 1% |
| Nanno | 7/10 | 5885 days | 1% |
| MartinD | 7/10 | 5893 days | 1% |
| Danielle | 10/10 | 5899 days | 1% |
| Sonja | 8/10 | 5902 days | 1% |
| Maettu | 8/10 | 5925 days | 1% |
| Stephanie | 9/10 | 5935 days | 1% |
| Katherine | 7/10 | 5939 days | 1% |
| Claire | 7/10 | 5947 days | 1% |
| helen | 8/10 | 5947 days | 1% |
| Maggie | 9/10 | 5953 days | 1% |
| Patricia | 10/10 | 5956 days | 1% |
| Antonella | 9/10 | 6009 days | 1% |
| Gray | 5/10 | 6070 days | 0% |
| Thomas Bachmann | 8/10 | 6083 days | 1% |
| Leanne Priestley | 8/10 | 6206 days | 1% |
| Amy Clark | 7/10 | 6206 days | 1% |
| Toby | 9/10 | 6207 days | 1% |
| Vikki | 10/10 | 6211 days | 1% |
| Ovin | 9/10 | 6211 days | 1% |
| AlanN316 | 9/10 | 6216 days | 1% |
| Yayami Kimura | 9/10 | 6218 days | 1% |
| Demo | 6/10 | 6219 days | 1% |
| RhysP | 8/10 | 6220 days | 1% |
| Sarah Maudsley | 7/10 | 6221 days | 1% |
| Benjamin Krein | 8/10 | 6226 days | 1% |
| Tina Daly | 6/10 | 6227 days | 1% |
| Ohad | 9/10 | 6228 days | 1% |
| Kathy Hawey | 8/10 | 6234 days | 1% |
| David Buckley | 9/10 | 6235 days | 1% |
| Jackie Horwell | 10/10 | 6236 days | 1% |
| Carla | 7/10 | 6247 days | 1% |
| Hanna | 7/10 | 6248 days | 1% |
| Reina Lohaye | 7/10 | 6250 days | 1% |
| Line Oehlinschloger | 5/10 | 6274 days | 0% |
| Tim | 8/10 | 6275 days | 1% |
| Mette de Graap | 7/10 | 6277 days | 1% |
| Andrew Porter | 8/10 | 6283 days | 1% |
| Gerber Liselotte | 9/10 | 6309 days | 1% |
| Samuel Brejeon | 7/10 | 6320 days | 1% |
| Christin | 8/10 | 6325 days | 1% |
| Orla | 3/10 | 6325 days | 0% |
| Pat Brewster | 7/10 | 6437 days | 1% |
| Natalia | 8/10 | 6521 days | 1% |
| Miriam&Eva | 8/10 | 6525 days | 1% |
| Caroline | 8/10 | 6541 days | 1% |
| Klaus | 4/10 | 6542 days | 0% |
| Bonnie | 6/10 | 6545 days | 1% |
| Franklin | 7/10 | 6545 days | 1% |
| Stephanie | 8/10 | 6546 days | 1% |
| andrew julie | 7/10 | 6559 days | 1% |
| Nancy Bill | 7/10 | 6559 days | 1% |
| Daniel | 7/10 | 6561 days | 1% |
| clairekidd | 5/10 | 6564 days | 0% |
| Fred Highsmith | 8/10 | 6565 days | 1% |
| Hannah | 8/10 | 6575 days | 1% |
| Detlef | 5/10 | 6579 days | 0% |
| Delgroot | 8/10 | 6593 days | 1% |
| Herman&Ineke | 5/10 | 6604 days | 0% |
| Janne | 5/10 | 6605 days | 0% |
| Rolf | 9/10 | 6613 days | 1% |
| Nicole | 8/10 | 6613 days | 1% |
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
-3.88% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 58 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 | -3.83% |
| 198 | -3.84% |
| 199 | -3.86% |
| 200 | -3.88% |
| 201 | -3.90% |
| 202 | -3.92% |
| 203 | -3.94% |
| … | … |
Balancing Adjustment
10.35% 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
75%
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.