Kia ora, 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 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
68.01%
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 | 444 days | 100% |
| Eric | 5/10 | 2885 days | 4% |
| Martin Fersebner | 7/10 | 2891 days | 5% |
| Alonso | 8/10 | 2947 days | 5% |
| Andres Gonzalez | 6/10 | 2965 days | 4% |
| Eveline | 8/10 | 2978 days | 5% |
| Anna Gruenewald | 5/10 | 2982 days | 3% |
| Camilla Geert | 6/10 | 3194 days | 3% |
| Sabrina Schneider | 8/10 | 3200 days | 4% |
| Laura Cosquer | 7/10 | 3202 days | 4% |
| Frenziska Schmid | 7/10 | 3215 days | 4% |
| Johanna Kuch | 7/10 | 3243 days | 3% |
| Carmen Pramstaller | 9/10 | 3245 days | 4% |
| Liza Braun | 8/10 | 3246 days | 4% |
| Markus Wabing | 8/10 | 3248 days | 4% |
| Uschi Pongratz | 8/10 | 3248 days | 4% |
| Nita Oussoren | 8/10 | 3248 days | 4% |
| Jessica Ruhland | 6/10 | 3248 days | 3% |
| David Soukal | 7/10 | 3249 days | 3% |
| Sabine Bergen | 7/10 | 3256 days | 3% |
| Sophie NIemann | 9/10 | 3261 days | 4% |
| Josephine | 7/10 | 3269 days | 3% |
| Pierre and Alexandra | 7/10 | 3301 days | 3% |
| Selma Krap | 9/10 | 3307 days | 3% |
| Blandine Giusti | 7/10 | 3569 days | 2% |
| Polly Rider | 8/10 | 3674 days | 2% |
| Greg Gilmore | 8/10 | 3907 days | 1% |
| Fiona Hawkins | 7/10 | 3907 days | 1% |
| Pavel Macek | 9/10 | 3916 days | 1% |
| Anna Sternberg | 5/10 | 3946 days | 1% |
| Roy Matthieu | 6/10 | 3956 days | 1% |
| Julie Ledanois | 7/10 | 3956 days | 1% |
| Pierre Gentile | 6/10 | 3956 days | 1% |
| Cindy Benayoum | 7/10 | 3956 days | 1% |
| Olivia | 8/10 | 3957 days | 1% |
| Callum | 7/10 | 3957 days | 1% |
| Sophia | 6/10 | 3962 days | 1% |
| Andreas Zapke | 8/10 | 4001 days | 1% |
| Simone Pickert | 7/10 | 4002 days | 1% |
| Cindy Bonton | 7/10 | 4012 days | 1% |
| Menu | 8/10 | 4300 days | 0% |
| Christian | 5/10 | 4303 days | 0% |
| Nora | 7/10 | 4303 days | 0% |
| Michael Nolan | 10/10 | 4310 days | 0% |
| Sebastian | 8/10 | 4314 days | 0% |
| Tobi | 9/10 | 4315 days | 0% |
| Chantal Mortel | 7/10 | 4315 days | 0% |
| Alessa Ndra | 10/10 | 4320 days | 0% |
| Fabian Brand | 5/10 | 4331 days | 0% |
| Kyle Guffei | 10/10 | 4333 days | 0% |
| Henrik Steinruecken | 8/10 | 4382 days | 2% |
| Doan | 6/10 | 4405 days | 1% |
| Judy | 10/10 | 4409 days | 2% |
| Petra | 7/10 | 4411 days | 1% |
| Selwindt | 9/10 | 4669 days | 2% |
| Mats Harstedt | 7/10 | 4684 days | 1% |
| Mark Bogton | 8/10 | 4684 days | 2% |
| R E Webb | 9/10 | 4687 days | 2% |
| Roland Hofmann | 7/10 | 4690 days | 1% |
| Lepied | 7/10 | 4691 days | 1% |
| Carla Mathieu | 10/10 | 4694 days | 2% |
| Graham Swinyard | 7/10 | 4698 days | 1% |
| Kurt Furuskar | 9/10 | 4715 days | 2% |
| _mel_ | 8/10 | 4735 days | 2% |
| Theresa | 9/10 | 4782 days | 2% |
| Frans van der Kroon | 8/10 | 4783 days | 2% |
| Elke & Charlotte | 8/10 | 4786 days | 2% |
| Gary A | 9/10 | 4796 days | 2% |
| katel86 | 5/10 | 4857 days | 1% |
| Dogoneit | 4/10 | 5010 days | 1% |
| Shoko Watanabe | 8/10 | 5010 days | 2% |
| Markus | 8/10 | 5013 days | 2% |
| Binder | 8/10 | 5025 days | 2% |
| Nicola Thackray | 7/10 | 5028 days | 1% |
| Katy Bourne | 8/10 | 5035 days | 2% |
| Michael Assfalg | 8/10 | 5040 days | 2% |
| Jon_and_Family | 9/10 | 5041 days | 2% |
| M Holierhoek | 7/10 | 5043 days | 1% |
| Berger | 9/10 | 5045 days | 2% |
| Ron Pantzer | 7/10 | 5050 days | 1% |
| Julian Seizinger | 9/10 | 5056 days | 2% |
| Olivia Carvill | 8/10 | 5057 days | 2% |
| Jarob Brezigar | 5/10 | 5062 days | 1% |
| Markus Richert | 6/10 | 5063 days | 1% |
| Christina Fischer | 5/10 | 5064 days | 1% |
| Bruce & Bonnie Childs | 9/10 | 5068 days | 2% |
| hendrik king | 9/10 | 5100 days | 2% |
| craigy | 6/10 | 5253 days | 1% |
| Monica Askew | 9/10 | 5323 days | 2% |
| Adam Gerrard | 8/10 | 5336 days | 2% |
| Sophie & Joffrey | 7/10 | 5340 days | 1% |
| steveE | 7/10 | 5345 days | 1% |
| Alan & Lorna | 8/10 | 5399 days | 2% |
| Mr and Mrs Scott | 5/10 | 5406 days | 1% |
| B Willmore | 10/10 | 5408 days | 2% |
| Pete H | 10/10 | 5415 days | 2% |
| Johan Wisselo | 7/10 | 5426 days | 1% |
| Tanja Titze | 10/10 | 5427 days | 2% |
| Groen | 8/10 | 5431 days | 2% |
| Kasper | 5/10 | 5432 days | 1% |
| Laura Walters | 8/10 | 5433 days | 2% |
| Ines Diana | 8/10 | 5433 days | 2% |
| uleugel | 8/10 | 5443 days | 2% |
| deanlaw | 9/10 | 5479 days | 2% |
| menzel | 8/10 | 5479 days | 2% |
| blokzyl | 7/10 | 5485 days | 1% |
| braunweiler | 9/10 | 5485 days | 2% |
| Marshall | 9/10 | 5498 days | 2% |
| Karin Linder | 9/10 | 5500 days | 2% |
| Lisette X | 7/10 | 5504 days | 1% |
| Louis Duhaime | 8/10 | 5507 days | 2% |
| paulandcathy | 8/10 | 5551 days | 2% |
| clairet | 7/10 | 5605 days | 1% |
| johannac | 7/10 | 5615 days | 1% |
| Miranda | 8/10 | 5618 days | 2% |
| Charles Lyne | 10/10 | 5710 days | 2% |
| Andrew Lonsdale | 5/10 | 5728 days | 1% |
| RubyJ | 8/10 | 5732 days | 2% |
| arthurwa | 10/10 | 5740 days | 2% |
| Peter Jackie | 7/10 | 5743 days | 1% |
| FiensG | 8/10 | 5759 days | 2% |
| Erik | 7/10 | 5762 days | 1% |
| Grimm | 9/10 | 5763 days | 2% |
| Marlena | 10/10 | 5763 days | 2% |
| Nick | 9/10 | 5768 days | 2% |
| RichardE | 9/10 | 5775 days | 2% |
| Sarah | 7/10 | 5776 days | 1% |
| Manfred | 9/10 | 5776 days | 2% |
| Majken | 5/10 | 5783 days | 1% |
| AurelieD | 7/10 | 5787 days | 1% |
| Nanno | 7/10 | 5790 days | 1% |
| MartinD | 7/10 | 5798 days | 1% |
| Danielle | 10/10 | 5804 days | 2% |
| Sonja | 8/10 | 5807 days | 2% |
| Maettu | 8/10 | 5830 days | 2% |
| Stephanie | 9/10 | 5840 days | 2% |
| Katherine | 7/10 | 5844 days | 1% |
| Claire | 7/10 | 5852 days | 1% |
| helen | 8/10 | 5852 days | 2% |
| Maggie | 9/10 | 5858 days | 2% |
| Patricia | 10/10 | 5861 days | 2% |
| Antonella | 9/10 | 5914 days | 2% |
| Gray | 5/10 | 5975 days | 1% |
| Thomas Bachmann | 8/10 | 5988 days | 2% |
| Leanne Priestley | 8/10 | 6111 days | 2% |
| Amy Clark | 7/10 | 6111 days | 1% |
| Toby | 9/10 | 6112 days | 2% |
| Vikki | 10/10 | 6116 days | 2% |
| Ovin | 9/10 | 6116 days | 2% |
| AlanN316 | 9/10 | 6121 days | 2% |
| Yayami Kimura | 9/10 | 6123 days | 2% |
| Demo | 6/10 | 6124 days | 1% |
| RhysP | 8/10 | 6125 days | 2% |
| Sarah Maudsley | 7/10 | 6126 days | 1% |
| Benjamin Krein | 8/10 | 6131 days | 2% |
| Tina Daly | 6/10 | 6132 days | 1% |
| Ohad | 9/10 | 6133 days | 2% |
| Kathy Hawey | 8/10 | 6139 days | 2% |
| David Buckley | 9/10 | 6140 days | 2% |
| Jackie Horwell | 10/10 | 6141 days | 2% |
| Carla | 7/10 | 6152 days | 1% |
| Hanna | 7/10 | 6153 days | 1% |
| Reina Lohaye | 7/10 | 6155 days | 1% |
| Line Oehlinschloger | 5/10 | 6179 days | 1% |
| Tim | 8/10 | 6180 days | 2% |
| Mette de Graap | 7/10 | 6182 days | 1% |
| Andrew Porter | 8/10 | 6188 days | 2% |
| Gerber Liselotte | 9/10 | 6214 days | 2% |
| Samuel Brejeon | 7/10 | 6225 days | 1% |
| Christin | 8/10 | 6230 days | 2% |
| Orla | 3/10 | 6230 days | 1% |
| Pat Brewster | 7/10 | 6342 days | 1% |
| Natalia | 8/10 | 6426 days | 2% |
| Miriam&Eva | 8/10 | 6430 days | 2% |
| Caroline | 8/10 | 6446 days | 2% |
| Klaus | 4/10 | 6447 days | 1% |
| Bonnie | 6/10 | 6450 days | 1% |
| Franklin | 7/10 | 6450 days | 1% |
| Stephanie | 8/10 | 6451 days | 2% |
| andrew julie | 7/10 | 6464 days | 1% |
| Nancy Bill | 7/10 | 6464 days | 1% |
| Daniel | 7/10 | 6466 days | 1% |
| clairekidd | 5/10 | 6469 days | 1% |
| Fred Highsmith | 8/10 | 6470 days | 2% |
| Hannah | 8/10 | 6480 days | 2% |
| Detlef | 5/10 | 6484 days | 1% |
| Delgroot | 8/10 | 6498 days | 2% |
| Herman&Ineke | 5/10 | 6509 days | 1% |
| Janne | 5/10 | 6510 days | 1% |
| Rolf | 9/10 | 6518 days | 2% |
| Nicole | 8/10 | 6518 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
-4.05% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 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 | -3.98% |
| 198 | -4.01% |
| 199 | -4.03% |
| 200 | -4.05% |
| 201 | -4.07% |
| 202 | -4.09% |
| 203 | -4.11% |
| … | … |
Balancing Adjustment
10.96% 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.