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
71.70%
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 | 993 days | 100% |
| Eric | 5/10 | 3434 days | 4% |
| Martin Fersebner | 7/10 | 3440 days | 5% |
| Alonso | 8/10 | 3496 days | 5% |
| Andres Gonzalez | 6/10 | 3514 days | 4% |
| Eveline | 8/10 | 3527 days | 5% |
| Anna Gruenewald | 5/10 | 3531 days | 3% |
| Camilla Geert | 6/10 | 3743 days | 3% |
| Sabrina Schneider | 8/10 | 3749 days | 3% |
| Laura Cosquer | 7/10 | 3751 days | 3% |
| Frenziska Schmid | 7/10 | 3764 days | 3% |
| Johanna Kuch | 7/10 | 3792 days | 3% |
| Carmen Pramstaller | 9/10 | 3794 days | 3% |
| Liza Braun | 8/10 | 3795 days | 3% |
| Markus Wabing | 8/10 | 3797 days | 3% |
| Uschi Pongratz | 8/10 | 3797 days | 3% |
| Nita Oussoren | 8/10 | 3797 days | 3% |
| Jessica Ruhland | 6/10 | 3797 days | 2% |
| David Soukal | 7/10 | 3798 days | 3% |
| Sabine Bergen | 7/10 | 3805 days | 3% |
| Sophie NIemann | 9/10 | 3810 days | 3% |
| Josephine | 7/10 | 3818 days | 3% |
| Pierre and Alexandra | 7/10 | 3850 days | 2% |
| Selma Krap | 9/10 | 3856 days | 2% |
| Blandine Giusti | 7/10 | 4118 days | 1% |
| Polly Rider | 8/10 | 4223 days | 0% |
| Greg Gilmore | 8/10 | 4456 days | 2% |
| Fiona Hawkins | 7/10 | 4456 days | 2% |
| Pavel Macek | 9/10 | 4465 days | 2% |
| Anna Sternberg | 5/10 | 4495 days | 2% |
| Roy Matthieu | 6/10 | 4505 days | 2% |
| Julie Ledanois | 7/10 | 4505 days | 2% |
| Pierre Gentile | 6/10 | 4505 days | 2% |
| Cindy Benayoum | 7/10 | 4505 days | 2% |
| Olivia | 8/10 | 4506 days | 2% |
| Callum | 7/10 | 4506 days | 2% |
| Sophia | 6/10 | 4511 days | 2% |
| Andreas Zapke | 8/10 | 4550 days | 2% |
| Simone Pickert | 7/10 | 4551 days | 2% |
| Cindy Bonton | 7/10 | 4561 days | 2% |
| Menu | 8/10 | 4849 days | 2% |
| Christian | 5/10 | 4852 days | 2% |
| Nora | 7/10 | 4852 days | 2% |
| Michael Nolan | 10/10 | 4859 days | 2% |
| Sebastian | 8/10 | 4863 days | 2% |
| Tobi | 9/10 | 4864 days | 2% |
| Chantal Mortel | 7/10 | 4864 days | 2% |
| Alessa Ndra | 10/10 | 4869 days | 2% |
| Fabian Brand | 5/10 | 4880 days | 2% |
| Kyle Guffei | 10/10 | 4882 days | 2% |
| Henrik Steinruecken | 8/10 | 4931 days | 2% |
| Doan | 6/10 | 4954 days | 2% |
| Judy | 10/10 | 4958 days | 2% |
| Petra | 7/10 | 4960 days | 2% |
| Selwindt | 9/10 | 5218 days | 2% |
| Mats Harstedt | 7/10 | 5233 days | 2% |
| Mark Bogton | 8/10 | 5233 days | 2% |
| R E Webb | 9/10 | 5236 days | 2% |
| Roland Hofmann | 7/10 | 5239 days | 2% |
| Lepied | 7/10 | 5240 days | 2% |
| Carla Mathieu | 10/10 | 5243 days | 2% |
| Graham Swinyard | 7/10 | 5247 days | 2% |
| Kurt Furuskar | 9/10 | 5264 days | 2% |
| _mel_ | 8/10 | 5284 days | 2% |
| Theresa | 9/10 | 5331 days | 2% |
| Frans van der Kroon | 8/10 | 5332 days | 2% |
| Elke & Charlotte | 8/10 | 5335 days | 2% |
| Gary A | 9/10 | 5345 days | 2% |
| katel86 | 5/10 | 5406 days | 2% |
| Dogoneit | 4/10 | 5559 days | 1% |
| Shoko Watanabe | 8/10 | 5559 days | 2% |
| Markus | 8/10 | 5562 days | 2% |
| Binder | 8/10 | 5574 days | 2% |
| Nicola Thackray | 7/10 | 5577 days | 2% |
| Katy Bourne | 8/10 | 5584 days | 2% |
| Michael Assfalg | 8/10 | 5589 days | 2% |
| Jon_and_Family | 9/10 | 5590 days | 2% |
| M Holierhoek | 7/10 | 5592 days | 2% |
| Berger | 9/10 | 5594 days | 2% |
| Ron Pantzer | 7/10 | 5599 days | 2% |
| Julian Seizinger | 9/10 | 5605 days | 2% |
| Olivia Carvill | 8/10 | 5606 days | 2% |
| Jarob Brezigar | 5/10 | 5611 days | 2% |
| Markus Richert | 6/10 | 5612 days | 2% |
| Christina Fischer | 5/10 | 5613 days | 2% |
| Bruce & Bonnie Childs | 9/10 | 5617 days | 2% |
| hendrik king | 9/10 | 5649 days | 2% |
| craigy | 6/10 | 5802 days | 2% |
| Monica Askew | 9/10 | 5872 days | 2% |
| Adam Gerrard | 8/10 | 5885 days | 2% |
| Sophie & Joffrey | 7/10 | 5889 days | 2% |
| steveE | 7/10 | 5894 days | 2% |
| Alan & Lorna | 8/10 | 5948 days | 2% |
| Mr and Mrs Scott | 5/10 | 5955 days | 2% |
| B Willmore | 10/10 | 5957 days | 2% |
| Pete H | 10/10 | 5964 days | 2% |
| Johan Wisselo | 7/10 | 5975 days | 2% |
| Tanja Titze | 10/10 | 5976 days | 2% |
| Groen | 8/10 | 5980 days | 2% |
| Kasper | 5/10 | 5981 days | 2% |
| Laura Walters | 8/10 | 5982 days | 2% |
| Ines Diana | 8/10 | 5982 days | 2% |
| uleugel | 8/10 | 5992 days | 2% |
| deanlaw | 9/10 | 6028 days | 2% |
| menzel | 8/10 | 6028 days | 2% |
| blokzyl | 7/10 | 6034 days | 2% |
| braunweiler | 9/10 | 6034 days | 2% |
| Marshall | 9/10 | 6047 days | 2% |
| Karin Linder | 9/10 | 6049 days | 2% |
| Lisette X | 7/10 | 6053 days | 2% |
| Louis Duhaime | 8/10 | 6056 days | 2% |
| paulandcathy | 8/10 | 6100 days | 2% |
| clairet | 7/10 | 6154 days | 2% |
| johannac | 7/10 | 6164 days | 2% |
| Miranda | 8/10 | 6167 days | 2% |
| Charles Lyne | 10/10 | 6259 days | 2% |
| Andrew Lonsdale | 5/10 | 6277 days | 2% |
| RubyJ | 8/10 | 6281 days | 2% |
| arthurwa | 10/10 | 6289 days | 2% |
| Peter Jackie | 7/10 | 6292 days | 2% |
| FiensG | 8/10 | 6308 days | 2% |
| Erik | 7/10 | 6312 days | 2% |
| Grimm | 9/10 | 6312 days | 2% |
| Marlena | 10/10 | 6312 days | 2% |
| Nick | 9/10 | 6318 days | 2% |
| RichardE | 9/10 | 6324 days | 2% |
| Sarah | 7/10 | 6325 days | 2% |
| Manfred | 9/10 | 6326 days | 2% |
| Majken | 5/10 | 6332 days | 2% |
| AurelieD | 7/10 | 6336 days | 2% |
| Nanno | 7/10 | 6340 days | 2% |
| MartinD | 7/10 | 6347 days | 2% |
| Danielle | 10/10 | 6354 days | 2% |
| Sonja | 8/10 | 6356 days | 2% |
| Maettu | 8/10 | 6379 days | 2% |
| Stephanie | 9/10 | 6389 days | 2% |
| Katherine | 7/10 | 6394 days | 2% |
| Claire | 7/10 | 6402 days | 2% |
| helen | 8/10 | 6402 days | 2% |
| Maggie | 9/10 | 6407 days | 2% |
| Patricia | 10/10 | 6411 days | 2% |
| Antonella | 9/10 | 6464 days | 2% |
| Gray | 5/10 | 6525 days | 2% |
| Thomas Bachmann | 8/10 | 6537 days | 2% |
| Leanne Priestley | 8/10 | 6660 days | 2% |
| Amy Clark | 7/10 | 6660 days | 2% |
| Toby | 9/10 | 6661 days | 2% |
| Vikki | 10/10 | 6665 days | 2% |
| Ovin | 9/10 | 6665 days | 2% |
| AlanN316 | 9/10 | 6670 days | 2% |
| Yayami Kimura | 9/10 | 6672 days | 2% |
| Demo | 6/10 | 6673 days | 2% |
| RhysP | 8/10 | 6674 days | 2% |
| Sarah Maudsley | 7/10 | 6675 days | 2% |
| Benjamin Krein | 8/10 | 6680 days | 2% |
| Tina Daly | 6/10 | 6681 days | 2% |
| Ohad | 9/10 | 6682 days | 2% |
| Kathy Hawey | 8/10 | 6688 days | 2% |
| David Buckley | 9/10 | 6689 days | 2% |
| Jackie Horwell | 10/10 | 6690 days | 2% |
| Carla | 7/10 | 6701 days | 2% |
| Hanna | 7/10 | 6702 days | 2% |
| Reina Lohaye | 7/10 | 6704 days | 2% |
| Line Oehlinschloger | 5/10 | 6728 days | 2% |
| Tim | 8/10 | 6729 days | 2% |
| Mette de Graap | 7/10 | 6731 days | 2% |
| Andrew Porter | 8/10 | 6737 days | 2% |
| Gerber Liselotte | 9/10 | 6763 days | 2% |
| Samuel Brejeon | 7/10 | 6774 days | 2% |
| Christin | 8/10 | 6779 days | 2% |
| Orla | 3/10 | 6779 days | 1% |
| Pat Brewster | 7/10 | 6891 days | 2% |
| Natalia | 8/10 | 6975 days | 2% |
| Miriam&Eva | 8/10 | 6979 days | 2% |
| Caroline | 8/10 | 6995 days | 2% |
| Klaus | 4/10 | 6996 days | 1% |
| Bonnie | 6/10 | 6999 days | 2% |
| Franklin | 7/10 | 6999 days | 2% |
| Stephanie | 8/10 | 7000 days | 2% |
| andrew julie | 7/10 | 7013 days | 2% |
| Nancy Bill | 7/10 | 7013 days | 2% |
| Daniel | 7/10 | 7015 days | 2% |
| clairekidd | 5/10 | 7018 days | 2% |
| Fred Highsmith | 8/10 | 7019 days | 2% |
| Hannah | 8/10 | 7029 days | 2% |
| Detlef | 5/10 | 7033 days | 2% |
| Delgroot | 8/10 | 7047 days | 2% |
| Herman&Ineke | 5/10 | 7058 days | 2% |
| Janne | 5/10 | 7059 days | 2% |
| Rolf | 9/10 | 7067 days | 2% |
| Nicole | 8/10 | 7067 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
-2.15% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 118 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 | -2.12% |
| 198 | -2.13% |
| 199 | -2.14% |
| 200 | -2.15% |
| 201 | -2.16% |
| 202 | -2.17% |
| 203 | -2.18% |
| … | … |
Balancing Adjustment
7.26% 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.