G'day, 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
72.22%
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 | 1054 days | 100% |
| Eric | 5/10 | 3495 days | 5% |
| Martin Fersebner | 7/10 | 3501 days | 6% |
| Alonso | 8/10 | 3557 days | 6% |
| Andres Gonzalez | 6/10 | 3575 days | 5% |
| Eveline | 8/10 | 3588 days | 5% |
| Anna Gruenewald | 5/10 | 3592 days | 4% |
| Camilla Geert | 6/10 | 3804 days | 3% |
| Sabrina Schneider | 8/10 | 3810 days | 4% |
| Laura Cosquer | 7/10 | 3812 days | 3% |
| Frenziska Schmid | 7/10 | 3825 days | 3% |
| Johanna Kuch | 7/10 | 3853 days | 3% |
| Carmen Pramstaller | 9/10 | 3855 days | 3% |
| Liza Braun | 8/10 | 3856 days | 3% |
| Markus Wabing | 8/10 | 3858 days | 3% |
| Uschi Pongratz | 8/10 | 3858 days | 3% |
| Nita Oussoren | 8/10 | 3858 days | 3% |
| Jessica Ruhland | 6/10 | 3858 days | 3% |
| David Soukal | 7/10 | 3859 days | 3% |
| Sabine Bergen | 7/10 | 3866 days | 3% |
| Sophie NIemann | 9/10 | 3871 days | 3% |
| Josephine | 7/10 | 3879 days | 3% |
| Pierre and Alexandra | 7/10 | 3911 days | 3% |
| Selma Krap | 9/10 | 3917 days | 3% |
| Blandine Giusti | 7/10 | 4179 days | 1% |
| Polly Rider | 8/10 | 4284 days | 0% |
| Greg Gilmore | 8/10 | 4516 days | 3% |
| Fiona Hawkins | 7/10 | 4516 days | 3% |
| Pavel Macek | 9/10 | 4526 days | 3% |
| Anna Sternberg | 5/10 | 4556 days | 2% |
| Roy Matthieu | 6/10 | 4566 days | 3% |
| Julie Ledanois | 7/10 | 4566 days | 3% |
| Pierre Gentile | 6/10 | 4566 days | 3% |
| Cindy Benayoum | 7/10 | 4566 days | 3% |
| Olivia | 8/10 | 4567 days | 3% |
| Callum | 7/10 | 4567 days | 3% |
| Sophia | 6/10 | 4572 days | 3% |
| Andreas Zapke | 8/10 | 4611 days | 3% |
| Simone Pickert | 7/10 | 4612 days | 3% |
| Cindy Bonton | 7/10 | 4622 days | 3% |
| Menu | 8/10 | 4910 days | 3% |
| Christian | 5/10 | 4913 days | 2% |
| Nora | 7/10 | 4913 days | 3% |
| Michael Nolan | 10/10 | 4920 days | 3% |
| Sebastian | 8/10 | 4924 days | 3% |
| Tobi | 9/10 | 4925 days | 3% |
| Chantal Mortel | 7/10 | 4925 days | 3% |
| Alessa Ndra | 10/10 | 4930 days | 3% |
| Fabian Brand | 5/10 | 4941 days | 2% |
| Kyle Guffei | 10/10 | 4943 days | 3% |
| Henrik Steinruecken | 8/10 | 4992 days | 3% |
| Doan | 6/10 | 5015 days | 3% |
| Judy | 10/10 | 5019 days | 3% |
| Petra | 7/10 | 5021 days | 3% |
| Selwindt | 9/10 | 5279 days | 3% |
| Mats Harstedt | 7/10 | 5294 days | 3% |
| Mark Bogton | 8/10 | 5294 days | 3% |
| R E Webb | 9/10 | 5297 days | 3% |
| Roland Hofmann | 7/10 | 5300 days | 3% |
| Lepied | 7/10 | 5301 days | 3% |
| Carla Mathieu | 10/10 | 5304 days | 3% |
| Graham Swinyard | 7/10 | 5308 days | 3% |
| Kurt Furuskar | 9/10 | 5325 days | 3% |
| _mel_ | 8/10 | 5345 days | 3% |
| Theresa | 9/10 | 5392 days | 3% |
| Frans van der Kroon | 8/10 | 5393 days | 3% |
| Elke & Charlotte | 8/10 | 5396 days | 3% |
| Gary A | 9/10 | 5406 days | 3% |
| katel86 | 5/10 | 5466 days | 2% |
| Dogoneit | 4/10 | 5620 days | 2% |
| Shoko Watanabe | 8/10 | 5620 days | 3% |
| Markus | 8/10 | 5623 days | 3% |
| Binder | 8/10 | 5635 days | 3% |
| Nicola Thackray | 7/10 | 5638 days | 3% |
| Katy Bourne | 8/10 | 5645 days | 3% |
| Michael Assfalg | 8/10 | 5650 days | 3% |
| Jon_and_Family | 9/10 | 5651 days | 3% |
| M Holierhoek | 7/10 | 5653 days | 3% |
| Berger | 9/10 | 5655 days | 3% |
| Ron Pantzer | 7/10 | 5660 days | 3% |
| Julian Seizinger | 9/10 | 5666 days | 3% |
| Olivia Carvill | 8/10 | 5667 days | 3% |
| Jarob Brezigar | 5/10 | 5672 days | 2% |
| Markus Richert | 6/10 | 5673 days | 3% |
| Christina Fischer | 5/10 | 5674 days | 2% |
| Bruce & Bonnie Childs | 9/10 | 5678 days | 3% |
| hendrik king | 9/10 | 5710 days | 3% |
| craigy | 6/10 | 5862 days | 3% |
| Monica Askew | 9/10 | 5932 days | 3% |
| Adam Gerrard | 8/10 | 5945 days | 3% |
| Sophie & Joffrey | 7/10 | 5949 days | 3% |
| steveE | 7/10 | 5954 days | 3% |
| Alan & Lorna | 8/10 | 6009 days | 3% |
| Mr and Mrs Scott | 5/10 | 6016 days | 2% |
| B Willmore | 10/10 | 6018 days | 3% |
| Pete H | 10/10 | 6025 days | 3% |
| Johan Wisselo | 7/10 | 6036 days | 3% |
| Tanja Titze | 10/10 | 6037 days | 3% |
| Groen | 8/10 | 6041 days | 3% |
| Kasper | 5/10 | 6042 days | 2% |
| Laura Walters | 8/10 | 6043 days | 3% |
| Ines Diana | 8/10 | 6043 days | 3% |
| uleugel | 8/10 | 6053 days | 3% |
| deanlaw | 9/10 | 6089 days | 3% |
| menzel | 8/10 | 6089 days | 3% |
| blokzyl | 7/10 | 6095 days | 3% |
| braunweiler | 9/10 | 6095 days | 3% |
| Marshall | 9/10 | 6108 days | 3% |
| Karin Linder | 9/10 | 6110 days | 3% |
| Lisette X | 7/10 | 6114 days | 3% |
| Louis Duhaime | 8/10 | 6117 days | 3% |
| paulandcathy | 8/10 | 6161 days | 3% |
| clairet | 7/10 | 6214 days | 3% |
| johannac | 7/10 | 6224 days | 3% |
| Miranda | 8/10 | 6227 days | 3% |
| Charles Lyne | 10/10 | 6319 days | 3% |
| Andrew Lonsdale | 5/10 | 6337 days | 2% |
| RubyJ | 8/10 | 6341 days | 3% |
| arthurwa | 10/10 | 6350 days | 3% |
| Peter Jackie | 7/10 | 6353 days | 3% |
| FiensG | 8/10 | 6369 days | 3% |
| Erik | 7/10 | 6372 days | 3% |
| Grimm | 9/10 | 6373 days | 3% |
| Marlena | 10/10 | 6373 days | 3% |
| Nick | 9/10 | 6378 days | 3% |
| RichardE | 9/10 | 6385 days | 3% |
| Sarah | 7/10 | 6386 days | 3% |
| Manfred | 9/10 | 6386 days | 3% |
| Majken | 5/10 | 6393 days | 2% |
| AurelieD | 7/10 | 6397 days | 3% |
| Nanno | 7/10 | 6400 days | 3% |
| MartinD | 7/10 | 6408 days | 3% |
| Danielle | 10/10 | 6414 days | 3% |
| Sonja | 8/10 | 6417 days | 3% |
| Maettu | 8/10 | 6440 days | 3% |
| Stephanie | 9/10 | 6450 days | 3% |
| Katherine | 7/10 | 6454 days | 3% |
| Claire | 7/10 | 6462 days | 3% |
| helen | 8/10 | 6462 days | 3% |
| Maggie | 9/10 | 6468 days | 3% |
| Patricia | 10/10 | 6471 days | 3% |
| Antonella | 9/10 | 6524 days | 3% |
| Gray | 5/10 | 6585 days | 2% |
| Thomas Bachmann | 8/10 | 6598 days | 3% |
| Leanne Priestley | 8/10 | 6721 days | 3% |
| Amy Clark | 7/10 | 6721 days | 3% |
| Toby | 9/10 | 6722 days | 3% |
| Vikki | 10/10 | 6726 days | 3% |
| Ovin | 9/10 | 6726 days | 3% |
| AlanN316 | 9/10 | 6731 days | 3% |
| Yayami Kimura | 9/10 | 6733 days | 3% |
| Demo | 6/10 | 6734 days | 3% |
| RhysP | 8/10 | 6735 days | 3% |
| Sarah Maudsley | 7/10 | 6736 days | 3% |
| Benjamin Krein | 8/10 | 6741 days | 3% |
| Tina Daly | 6/10 | 6742 days | 3% |
| Ohad | 9/10 | 6743 days | 3% |
| Kathy Hawey | 8/10 | 6749 days | 3% |
| David Buckley | 9/10 | 6750 days | 3% |
| Jackie Horwell | 10/10 | 6751 days | 3% |
| Carla | 7/10 | 6762 days | 3% |
| Hanna | 7/10 | 6763 days | 3% |
| Reina Lohaye | 7/10 | 6765 days | 3% |
| Line Oehlinschloger | 5/10 | 6789 days | 2% |
| Tim | 8/10 | 6790 days | 3% |
| Mette de Graap | 7/10 | 6792 days | 3% |
| Andrew Porter | 8/10 | 6798 days | 3% |
| Gerber Liselotte | 9/10 | 6824 days | 3% |
| Samuel Brejeon | 7/10 | 6835 days | 3% |
| Christin | 8/10 | 6840 days | 3% |
| Orla | 3/10 | 6840 days | 1% |
| Pat Brewster | 7/10 | 6951 days | 3% |
| Natalia | 8/10 | 7035 days | 3% |
| Miriam&Eva | 8/10 | 7039 days | 3% |
| Caroline | 8/10 | 7055 days | 3% |
| Klaus | 4/10 | 7056 days | 2% |
| Bonnie | 6/10 | 7059 days | 3% |
| Franklin | 7/10 | 7059 days | 3% |
| Stephanie | 8/10 | 7060 days | 3% |
| andrew julie | 7/10 | 7073 days | 3% |
| Nancy Bill | 7/10 | 7073 days | 3% |
| Daniel | 7/10 | 7075 days | 3% |
| clairekidd | 5/10 | 7078 days | 2% |
| Fred Highsmith | 8/10 | 7079 days | 3% |
| Hannah | 8/10 | 7089 days | 3% |
| Detlef | 5/10 | 7093 days | 2% |
| Delgroot | 8/10 | 7108 days | 3% |
| Herman&Ineke | 5/10 | 7119 days | 2% |
| Janne | 5/10 | 7120 days | 2% |
| Rolf | 9/10 | 7128 days | 3% |
| Nicole | 8/10 | 7128 days | 3% |
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
-2.36% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 110 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 | -2.33% |
| 198 | -2.34% |
| 199 | -2.35% |
| 200 | -2.36% |
| 201 | -2.37% |
| 202 | -2.39% |
| 203 | -2.40% |
| … | … |
Balancing Adjustment
7.08% 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
77%
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.