Hey, 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
70.58%
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 | 872 days | 100% |
| Eric | 5/10 | 3313 days | 4% |
| Martin Fersebner | 7/10 | 3319 days | 5% |
| Alonso | 8/10 | 3375 days | 5% |
| Andres Gonzalez | 6/10 | 3393 days | 4% |
| Eveline | 8/10 | 3406 days | 5% |
| Anna Gruenewald | 5/10 | 3410 days | 4% |
| Camilla Geert | 6/10 | 3622 days | 3% |
| Sabrina Schneider | 8/10 | 3628 days | 4% |
| Laura Cosquer | 7/10 | 3630 days | 4% |
| Frenziska Schmid | 7/10 | 3643 days | 4% |
| Johanna Kuch | 7/10 | 3671 days | 3% |
| Carmen Pramstaller | 9/10 | 3673 days | 4% |
| Liza Braun | 8/10 | 3674 days | 4% |
| Markus Wabing | 8/10 | 3676 days | 4% |
| Uschi Pongratz | 8/10 | 3676 days | 4% |
| Nita Oussoren | 8/10 | 3676 days | 4% |
| Jessica Ruhland | 6/10 | 3676 days | 3% |
| David Soukal | 7/10 | 3677 days | 3% |
| Sabine Bergen | 7/10 | 3684 days | 3% |
| Sophie NIemann | 9/10 | 3689 days | 4% |
| Josephine | 7/10 | 3697 days | 3% |
| Pierre and Alexandra | 7/10 | 3729 days | 3% |
| Selma Krap | 9/10 | 3735 days | 3% |
| Blandine Giusti | 7/10 | 3997 days | 2% |
| Polly Rider | 8/10 | 4102 days | 1% |
| Greg Gilmore | 8/10 | 4335 days | 0% |
| Fiona Hawkins | 7/10 | 4335 days | 0% |
| Pavel Macek | 9/10 | 4344 days | 0% |
| Anna Sternberg | 5/10 | 4374 days | 0% |
| Roy Matthieu | 6/10 | 4384 days | 2% |
| Julie Ledanois | 7/10 | 4384 days | 2% |
| Pierre Gentile | 6/10 | 4384 days | 2% |
| Cindy Benayoum | 7/10 | 4384 days | 2% |
| Olivia | 8/10 | 4385 days | 3% |
| Callum | 7/10 | 4385 days | 2% |
| Sophia | 6/10 | 4390 days | 2% |
| Andreas Zapke | 8/10 | 4429 days | 3% |
| Simone Pickert | 7/10 | 4430 days | 2% |
| Cindy Bonton | 7/10 | 4440 days | 2% |
| Menu | 8/10 | 4728 days | 3% |
| Christian | 5/10 | 4731 days | 2% |
| Nora | 7/10 | 4731 days | 2% |
| Michael Nolan | 10/10 | 4738 days | 3% |
| Sebastian | 8/10 | 4742 days | 3% |
| Tobi | 9/10 | 4743 days | 3% |
| Chantal Mortel | 7/10 | 4743 days | 2% |
| Alessa Ndra | 10/10 | 4748 days | 3% |
| Fabian Brand | 5/10 | 4759 days | 2% |
| Kyle Guffei | 10/10 | 4761 days | 3% |
| Henrik Steinruecken | 8/10 | 4810 days | 3% |
| Doan | 6/10 | 4833 days | 2% |
| Judy | 10/10 | 4837 days | 3% |
| Petra | 7/10 | 4839 days | 2% |
| Selwindt | 9/10 | 5097 days | 3% |
| Mats Harstedt | 7/10 | 5112 days | 2% |
| Mark Bogton | 8/10 | 5112 days | 3% |
| R E Webb | 9/10 | 5115 days | 3% |
| Roland Hofmann | 7/10 | 5118 days | 2% |
| Lepied | 7/10 | 5119 days | 2% |
| Carla Mathieu | 10/10 | 5122 days | 3% |
| Graham Swinyard | 7/10 | 5126 days | 2% |
| Kurt Furuskar | 9/10 | 5143 days | 3% |
| _mel_ | 8/10 | 5163 days | 3% |
| Theresa | 9/10 | 5210 days | 3% |
| Frans van der Kroon | 8/10 | 5211 days | 3% |
| Elke & Charlotte | 8/10 | 5214 days | 3% |
| Gary A | 9/10 | 5224 days | 3% |
| katel86 | 5/10 | 5285 days | 2% |
| Dogoneit | 4/10 | 5438 days | 2% |
| Shoko Watanabe | 8/10 | 5438 days | 3% |
| Markus | 8/10 | 5441 days | 3% |
| Binder | 8/10 | 5453 days | 3% |
| Nicola Thackray | 7/10 | 5456 days | 2% |
| Katy Bourne | 8/10 | 5463 days | 3% |
| Michael Assfalg | 8/10 | 5468 days | 3% |
| Jon_and_Family | 9/10 | 5469 days | 3% |
| M Holierhoek | 7/10 | 5471 days | 2% |
| Berger | 9/10 | 5473 days | 3% |
| Ron Pantzer | 7/10 | 5478 days | 2% |
| Julian Seizinger | 9/10 | 5484 days | 3% |
| Olivia Carvill | 8/10 | 5485 days | 3% |
| Jarob Brezigar | 5/10 | 5490 days | 2% |
| Markus Richert | 6/10 | 5491 days | 2% |
| Christina Fischer | 5/10 | 5492 days | 2% |
| Bruce & Bonnie Childs | 9/10 | 5496 days | 3% |
| hendrik king | 9/10 | 5528 days | 3% |
| craigy | 6/10 | 5681 days | 2% |
| Monica Askew | 9/10 | 5751 days | 3% |
| Adam Gerrard | 8/10 | 5764 days | 3% |
| Sophie & Joffrey | 7/10 | 5768 days | 2% |
| steveE | 7/10 | 5773 days | 2% |
| Alan & Lorna | 8/10 | 5827 days | 3% |
| Mr and Mrs Scott | 5/10 | 5834 days | 2% |
| B Willmore | 10/10 | 5836 days | 3% |
| Pete H | 10/10 | 5843 days | 3% |
| Johan Wisselo | 7/10 | 5854 days | 2% |
| Tanja Titze | 10/10 | 5855 days | 3% |
| Groen | 8/10 | 5859 days | 3% |
| Kasper | 5/10 | 5860 days | 2% |
| Laura Walters | 8/10 | 5861 days | 3% |
| Ines Diana | 8/10 | 5861 days | 3% |
| uleugel | 8/10 | 5871 days | 3% |
| deanlaw | 9/10 | 5907 days | 3% |
| menzel | 8/10 | 5907 days | 3% |
| blokzyl | 7/10 | 5913 days | 2% |
| braunweiler | 9/10 | 5913 days | 3% |
| Marshall | 9/10 | 5926 days | 3% |
| Karin Linder | 9/10 | 5928 days | 3% |
| Lisette X | 7/10 | 5932 days | 2% |
| Louis Duhaime | 8/10 | 5935 days | 3% |
| paulandcathy | 8/10 | 5979 days | 3% |
| clairet | 7/10 | 6033 days | 2% |
| johannac | 7/10 | 6043 days | 2% |
| Miranda | 8/10 | 6046 days | 3% |
| Charles Lyne | 10/10 | 6138 days | 3% |
| Andrew Lonsdale | 5/10 | 6156 days | 2% |
| RubyJ | 8/10 | 6160 days | 3% |
| arthurwa | 10/10 | 6168 days | 3% |
| Peter Jackie | 7/10 | 6171 days | 2% |
| FiensG | 8/10 | 6187 days | 3% |
| Erik | 7/10 | 6191 days | 2% |
| Grimm | 9/10 | 6192 days | 3% |
| Marlena | 10/10 | 6192 days | 3% |
| Nick | 9/10 | 6197 days | 3% |
| RichardE | 9/10 | 6203 days | 3% |
| Sarah | 7/10 | 6205 days | 2% |
| Manfred | 9/10 | 6205 days | 3% |
| Majken | 5/10 | 6211 days | 2% |
| AurelieD | 7/10 | 6215 days | 2% |
| Nanno | 7/10 | 6219 days | 2% |
| MartinD | 7/10 | 6226 days | 2% |
| Danielle | 10/10 | 6233 days | 3% |
| Sonja | 8/10 | 6235 days | 3% |
| Maettu | 8/10 | 6258 days | 3% |
| Stephanie | 9/10 | 6268 days | 3% |
| Katherine | 7/10 | 6273 days | 2% |
| Claire | 7/10 | 6281 days | 2% |
| helen | 8/10 | 6281 days | 3% |
| Maggie | 9/10 | 6286 days | 3% |
| Patricia | 10/10 | 6290 days | 3% |
| Antonella | 9/10 | 6343 days | 3% |
| Gray | 5/10 | 6404 days | 2% |
| Thomas Bachmann | 8/10 | 6417 days | 3% |
| Leanne Priestley | 8/10 | 6539 days | 3% |
| Amy Clark | 7/10 | 6539 days | 2% |
| Toby | 9/10 | 6540 days | 3% |
| Vikki | 10/10 | 6544 days | 3% |
| Ovin | 9/10 | 6544 days | 3% |
| AlanN316 | 9/10 | 6549 days | 3% |
| Yayami Kimura | 9/10 | 6551 days | 3% |
| Demo | 6/10 | 6552 days | 2% |
| RhysP | 8/10 | 6553 days | 3% |
| Sarah Maudsley | 7/10 | 6554 days | 2% |
| Benjamin Krein | 8/10 | 6559 days | 3% |
| Tina Daly | 6/10 | 6560 days | 2% |
| Ohad | 9/10 | 6561 days | 3% |
| Kathy Hawey | 8/10 | 6567 days | 3% |
| David Buckley | 9/10 | 6568 days | 3% |
| Jackie Horwell | 10/10 | 6569 days | 3% |
| Carla | 7/10 | 6580 days | 2% |
| Hanna | 7/10 | 6581 days | 2% |
| Reina Lohaye | 7/10 | 6583 days | 2% |
| Line Oehlinschloger | 5/10 | 6607 days | 2% |
| Tim | 8/10 | 6608 days | 3% |
| Mette de Graap | 7/10 | 6610 days | 2% |
| Andrew Porter | 8/10 | 6616 days | 3% |
| Gerber Liselotte | 9/10 | 6642 days | 3% |
| Samuel Brejeon | 7/10 | 6653 days | 2% |
| Christin | 8/10 | 6658 days | 3% |
| Orla | 3/10 | 6658 days | 1% |
| Pat Brewster | 7/10 | 6770 days | 2% |
| Natalia | 8/10 | 6854 days | 3% |
| Miriam&Eva | 8/10 | 6858 days | 3% |
| Caroline | 8/10 | 6874 days | 3% |
| Klaus | 4/10 | 6875 days | 2% |
| Bonnie | 6/10 | 6878 days | 2% |
| Franklin | 7/10 | 6878 days | 2% |
| Stephanie | 8/10 | 6879 days | 3% |
| andrew julie | 7/10 | 6892 days | 2% |
| Nancy Bill | 7/10 | 6892 days | 2% |
| Daniel | 7/10 | 6894 days | 2% |
| clairekidd | 5/10 | 6897 days | 2% |
| Fred Highsmith | 8/10 | 6898 days | 3% |
| Hannah | 8/10 | 6908 days | 3% |
| Detlef | 5/10 | 6912 days | 2% |
| Delgroot | 8/10 | 6926 days | 3% |
| Herman&Ineke | 5/10 | 6937 days | 2% |
| Janne | 5/10 | 6938 days | 2% |
| Rolf | 9/10 | 6946 days | 3% |
| Nicole | 8/10 | 6946 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
-4.15% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 53 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 | -4.08% |
| 198 | -4.10% |
| 199 | -4.13% |
| 200 | -4.15% |
| 201 | -4.17% |
| 202 | -4.19% |
| 203 | -4.21% |
| … | … |
Balancing Adjustment
9.22% 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.