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 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
72.58%
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 | 1094 days | 100% |
| Eric | 5/10 | 3535 days | 5% |
| Martin Fersebner | 7/10 | 3541 days | 6% |
| Alonso | 8/10 | 3597 days | 6% |
| Andres Gonzalez | 6/10 | 3615 days | 5% |
| Eveline | 8/10 | 3628 days | 6% |
| Anna Gruenewald | 5/10 | 3632 days | 4% |
| Camilla Geert | 6/10 | 3844 days | 3% |
| Sabrina Schneider | 8/10 | 3850 days | 4% |
| Laura Cosquer | 7/10 | 3852 days | 4% |
| Frenziska Schmid | 7/10 | 3865 days | 4% |
| Johanna Kuch | 7/10 | 3893 days | 3% |
| Carmen Pramstaller | 9/10 | 3895 days | 4% |
| Liza Braun | 8/10 | 3896 days | 4% |
| Markus Wabing | 8/10 | 3898 days | 4% |
| Uschi Pongratz | 8/10 | 3898 days | 4% |
| Nita Oussoren | 8/10 | 3898 days | 4% |
| Jessica Ruhland | 6/10 | 3898 days | 3% |
| David Soukal | 7/10 | 3899 days | 3% |
| Sabine Bergen | 7/10 | 3906 days | 3% |
| Sophie NIemann | 9/10 | 3911 days | 3% |
| Josephine | 7/10 | 3919 days | 3% |
| Pierre and Alexandra | 7/10 | 3951 days | 3% |
| Selma Krap | 9/10 | 3957 days | 3% |
| Blandine Giusti | 7/10 | 4219 days | 1% |
| Polly Rider | 8/10 | 4324 days | 0% |
| Greg Gilmore | 8/10 | 4557 days | 4% |
| Fiona Hawkins | 7/10 | 4557 days | 4% |
| Pavel Macek | 9/10 | 4566 days | 4% |
| Anna Sternberg | 5/10 | 4596 days | 3% |
| Roy Matthieu | 6/10 | 4606 days | 3% |
| Julie Ledanois | 7/10 | 4606 days | 4% |
| Pierre Gentile | 6/10 | 4606 days | 3% |
| Cindy Benayoum | 7/10 | 4606 days | 4% |
| Olivia | 8/10 | 4607 days | 4% |
| Callum | 7/10 | 4607 days | 4% |
| Sophia | 6/10 | 4612 days | 3% |
| Andreas Zapke | 8/10 | 4651 days | 4% |
| Simone Pickert | 7/10 | 4652 days | 4% |
| Cindy Bonton | 7/10 | 4662 days | 4% |
| Menu | 8/10 | 4950 days | 4% |
| Christian | 5/10 | 4953 days | 3% |
| Nora | 7/10 | 4953 days | 4% |
| Michael Nolan | 10/10 | 4960 days | 4% |
| Sebastian | 8/10 | 4964 days | 4% |
| Tobi | 9/10 | 4965 days | 4% |
| Chantal Mortel | 7/10 | 4965 days | 4% |
| Alessa Ndra | 10/10 | 4970 days | 4% |
| Fabian Brand | 5/10 | 4981 days | 3% |
| Kyle Guffei | 10/10 | 4983 days | 4% |
| Henrik Steinruecken | 8/10 | 5032 days | 4% |
| Doan | 6/10 | 5055 days | 3% |
| Judy | 10/10 | 5059 days | 4% |
| Petra | 7/10 | 5061 days | 4% |
| Selwindt | 9/10 | 5319 days | 4% |
| Mats Harstedt | 7/10 | 5334 days | 4% |
| Mark Bogton | 8/10 | 5334 days | 4% |
| R E Webb | 9/10 | 5337 days | 4% |
| Roland Hofmann | 7/10 | 5340 days | 4% |
| Lepied | 7/10 | 5341 days | 4% |
| Carla Mathieu | 10/10 | 5344 days | 4% |
| Graham Swinyard | 7/10 | 5348 days | 4% |
| Kurt Furuskar | 9/10 | 5365 days | 4% |
| _mel_ | 8/10 | 5385 days | 4% |
| Theresa | 9/10 | 5432 days | 4% |
| Frans van der Kroon | 8/10 | 5433 days | 4% |
| Elke & Charlotte | 8/10 | 5436 days | 4% |
| Gary A | 9/10 | 5446 days | 4% |
| katel86 | 5/10 | 5507 days | 3% |
| Dogoneit | 4/10 | 5660 days | 2% |
| Shoko Watanabe | 8/10 | 5660 days | 4% |
| Markus | 8/10 | 5663 days | 4% |
| Binder | 8/10 | 5675 days | 4% |
| Nicola Thackray | 7/10 | 5678 days | 4% |
| Katy Bourne | 8/10 | 5685 days | 4% |
| Michael Assfalg | 8/10 | 5690 days | 4% |
| Jon_and_Family | 9/10 | 5691 days | 4% |
| M Holierhoek | 7/10 | 5693 days | 4% |
| Berger | 9/10 | 5695 days | 4% |
| Ron Pantzer | 7/10 | 5700 days | 4% |
| Julian Seizinger | 9/10 | 5706 days | 4% |
| Olivia Carvill | 8/10 | 5707 days | 4% |
| Jarob Brezigar | 5/10 | 5712 days | 3% |
| Markus Richert | 6/10 | 5713 days | 3% |
| Christina Fischer | 5/10 | 5714 days | 3% |
| Bruce & Bonnie Childs | 9/10 | 5718 days | 4% |
| hendrik king | 9/10 | 5750 days | 4% |
| craigy | 6/10 | 5903 days | 3% |
| Monica Askew | 9/10 | 5973 days | 4% |
| Adam Gerrard | 8/10 | 5986 days | 4% |
| Sophie & Joffrey | 7/10 | 5990 days | 4% |
| steveE | 7/10 | 5995 days | 4% |
| Alan & Lorna | 8/10 | 6049 days | 4% |
| Mr and Mrs Scott | 5/10 | 6056 days | 3% |
| B Willmore | 10/10 | 6058 days | 4% |
| Pete H | 10/10 | 6065 days | 4% |
| Johan Wisselo | 7/10 | 6076 days | 4% |
| Tanja Titze | 10/10 | 6077 days | 4% |
| Groen | 8/10 | 6081 days | 4% |
| Kasper | 5/10 | 6082 days | 3% |
| Laura Walters | 8/10 | 6083 days | 4% |
| Ines Diana | 8/10 | 6083 days | 4% |
| uleugel | 8/10 | 6093 days | 4% |
| deanlaw | 9/10 | 6129 days | 4% |
| menzel | 8/10 | 6129 days | 4% |
| blokzyl | 7/10 | 6135 days | 4% |
| braunweiler | 9/10 | 6135 days | 4% |
| Marshall | 9/10 | 6148 days | 4% |
| Karin Linder | 9/10 | 6150 days | 4% |
| Lisette X | 7/10 | 6154 days | 4% |
| Louis Duhaime | 8/10 | 6157 days | 4% |
| paulandcathy | 8/10 | 6201 days | 4% |
| clairet | 7/10 | 6255 days | 4% |
| johannac | 7/10 | 6265 days | 4% |
| Miranda | 8/10 | 6268 days | 4% |
| Charles Lyne | 10/10 | 6360 days | 4% |
| Andrew Lonsdale | 5/10 | 6378 days | 3% |
| RubyJ | 8/10 | 6382 days | 4% |
| arthurwa | 10/10 | 6390 days | 4% |
| Peter Jackie | 7/10 | 6393 days | 4% |
| FiensG | 8/10 | 6409 days | 4% |
| Erik | 7/10 | 6412 days | 4% |
| Grimm | 9/10 | 6413 days | 4% |
| Marlena | 10/10 | 6413 days | 4% |
| Nick | 9/10 | 6419 days | 4% |
| RichardE | 9/10 | 6425 days | 4% |
| Sarah | 7/10 | 6426 days | 4% |
| Manfred | 9/10 | 6426 days | 4% |
| Majken | 5/10 | 6433 days | 3% |
| AurelieD | 7/10 | 6437 days | 4% |
| Nanno | 7/10 | 6440 days | 4% |
| MartinD | 7/10 | 6448 days | 4% |
| Danielle | 10/10 | 6454 days | 4% |
| Sonja | 8/10 | 6457 days | 4% |
| Maettu | 8/10 | 6480 days | 4% |
| Stephanie | 9/10 | 6490 days | 4% |
| Katherine | 7/10 | 6494 days | 4% |
| Claire | 7/10 | 6502 days | 4% |
| helen | 8/10 | 6502 days | 4% |
| Maggie | 9/10 | 6508 days | 4% |
| Patricia | 10/10 | 6511 days | 4% |
| Antonella | 9/10 | 6564 days | 4% |
| Gray | 5/10 | 6625 days | 3% |
| Thomas Bachmann | 8/10 | 6638 days | 4% |
| Leanne Priestley | 8/10 | 6761 days | 4% |
| Amy Clark | 7/10 | 6761 days | 4% |
| Toby | 9/10 | 6762 days | 4% |
| Vikki | 10/10 | 6766 days | 4% |
| Ovin | 9/10 | 6766 days | 4% |
| AlanN316 | 9/10 | 6771 days | 4% |
| Yayami Kimura | 9/10 | 6773 days | 4% |
| Demo | 6/10 | 6774 days | 3% |
| RhysP | 8/10 | 6775 days | 4% |
| Sarah Maudsley | 7/10 | 6776 days | 4% |
| Benjamin Krein | 8/10 | 6781 days | 4% |
| Tina Daly | 6/10 | 6782 days | 3% |
| Ohad | 9/10 | 6783 days | 4% |
| Kathy Hawey | 8/10 | 6789 days | 4% |
| David Buckley | 9/10 | 6790 days | 4% |
| Jackie Horwell | 10/10 | 6791 days | 4% |
| Carla | 7/10 | 6802 days | 4% |
| Hanna | 7/10 | 6803 days | 4% |
| Reina Lohaye | 7/10 | 6805 days | 4% |
| Line Oehlinschloger | 5/10 | 6829 days | 3% |
| Tim | 8/10 | 6830 days | 4% |
| Mette de Graap | 7/10 | 6832 days | 4% |
| Andrew Porter | 8/10 | 6838 days | 4% |
| Gerber Liselotte | 9/10 | 6864 days | 4% |
| Samuel Brejeon | 7/10 | 6875 days | 4% |
| Christin | 8/10 | 6880 days | 4% |
| Orla | 3/10 | 6880 days | 2% |
| Pat Brewster | 7/10 | 6992 days | 4% |
| Natalia | 8/10 | 7076 days | 4% |
| Miriam&Eva | 8/10 | 7080 days | 4% |
| Caroline | 8/10 | 7096 days | 4% |
| Klaus | 4/10 | 7097 days | 2% |
| Bonnie | 6/10 | 7100 days | 3% |
| Franklin | 7/10 | 7100 days | 4% |
| Stephanie | 8/10 | 7101 days | 4% |
| andrew julie | 7/10 | 7114 days | 4% |
| Nancy Bill | 7/10 | 7114 days | 4% |
| Daniel | 7/10 | 7116 days | 4% |
| clairekidd | 5/10 | 7119 days | 3% |
| Fred Highsmith | 8/10 | 7120 days | 4% |
| Hannah | 8/10 | 7130 days | 4% |
| Detlef | 5/10 | 7134 days | 3% |
| Delgroot | 8/10 | 7148 days | 4% |
| Herman&Ineke | 5/10 | 7159 days | 3% |
| Janne | 5/10 | 7160 days | 3% |
| Rolf | 9/10 | 7168 days | 4% |
| Nicole | 8/10 | 7168 days | 4% |
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
-3.23% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 68 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 | -3.18% |
| 198 | -3.20% |
| 199 | -3.21% |
| 200 | -3.23% |
| 201 | -3.25% |
| 202 | -3.26% |
| 203 | -3.28% |
| … | … |
Balancing Adjustment
7.37% 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.