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
72.75%
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 | 1114 days | 100% |
| Eric | 5/10 | 3555 days | 5% |
| Martin Fersebner | 7/10 | 3561 days | 6% |
| Alonso | 8/10 | 3617 days | 6% |
| Andres Gonzalez | 6/10 | 3635 days | 5% |
| Eveline | 8/10 | 3648 days | 6% |
| Anna Gruenewald | 5/10 | 3652 days | 5% |
| Camilla Geert | 6/10 | 3864 days | 4% |
| Sabrina Schneider | 8/10 | 3870 days | 4% |
| Laura Cosquer | 7/10 | 3872 days | 4% |
| Frenziska Schmid | 7/10 | 3885 days | 4% |
| Johanna Kuch | 7/10 | 3913 days | 4% |
| Carmen Pramstaller | 9/10 | 3915 days | 4% |
| Liza Braun | 8/10 | 3916 days | 4% |
| Markus Wabing | 8/10 | 3918 days | 4% |
| Uschi Pongratz | 8/10 | 3918 days | 4% |
| Nita Oussoren | 8/10 | 3918 days | 4% |
| Jessica Ruhland | 6/10 | 3918 days | 3% |
| David Soukal | 7/10 | 3919 days | 3% |
| Sabine Bergen | 7/10 | 3926 days | 3% |
| Sophie NIemann | 9/10 | 3931 days | 4% |
| Josephine | 7/10 | 3939 days | 3% |
| Pierre and Alexandra | 7/10 | 3971 days | 3% |
| Selma Krap | 9/10 | 3977 days | 3% |
| Blandine Giusti | 7/10 | 4239 days | 1% |
| Polly Rider | 8/10 | 4344 days | 0% |
| Greg Gilmore | 8/10 | 4577 days | 4% |
| Fiona Hawkins | 7/10 | 4577 days | 4% |
| Pavel Macek | 9/10 | 4586 days | 4% |
| Anna Sternberg | 5/10 | 4616 days | 3% |
| Roy Matthieu | 6/10 | 4626 days | 4% |
| Julie Ledanois | 7/10 | 4626 days | 4% |
| Pierre Gentile | 6/10 | 4626 days | 4% |
| Cindy Benayoum | 7/10 | 4626 days | 4% |
| Olivia | 8/10 | 4627 days | 4% |
| Callum | 7/10 | 4627 days | 4% |
| Sophia | 6/10 | 4632 days | 4% |
| Andreas Zapke | 8/10 | 4671 days | 4% |
| Simone Pickert | 7/10 | 4672 days | 4% |
| Cindy Bonton | 7/10 | 4682 days | 4% |
| Menu | 8/10 | 4970 days | 4% |
| Christian | 5/10 | 4973 days | 3% |
| Nora | 7/10 | 4973 days | 4% |
| Michael Nolan | 10/10 | 4980 days | 4% |
| Sebastian | 8/10 | 4984 days | 4% |
| Tobi | 9/10 | 4985 days | 4% |
| Chantal Mortel | 7/10 | 4985 days | 4% |
| Alessa Ndra | 10/10 | 4990 days | 4% |
| Fabian Brand | 5/10 | 5001 days | 3% |
| Kyle Guffei | 10/10 | 5003 days | 4% |
| Henrik Steinruecken | 8/10 | 5052 days | 4% |
| Doan | 6/10 | 5075 days | 4% |
| Judy | 10/10 | 5079 days | 4% |
| Petra | 7/10 | 5081 days | 4% |
| Selwindt | 9/10 | 5339 days | 4% |
| Mats Harstedt | 7/10 | 5354 days | 4% |
| Mark Bogton | 8/10 | 5354 days | 4% |
| R E Webb | 9/10 | 5357 days | 4% |
| Roland Hofmann | 7/10 | 5360 days | 4% |
| Lepied | 7/10 | 5361 days | 4% |
| Carla Mathieu | 10/10 | 5364 days | 4% |
| Graham Swinyard | 7/10 | 5368 days | 4% |
| Kurt Furuskar | 9/10 | 5385 days | 4% |
| _mel_ | 8/10 | 5405 days | 4% |
| Theresa | 9/10 | 5452 days | 4% |
| Frans van der Kroon | 8/10 | 5453 days | 4% |
| Elke & Charlotte | 8/10 | 5456 days | 4% |
| Gary A | 9/10 | 5466 days | 4% |
| katel86 | 5/10 | 5527 days | 3% |
| Dogoneit | 4/10 | 5680 days | 3% |
| Shoko Watanabe | 8/10 | 5680 days | 4% |
| Markus | 8/10 | 5683 days | 4% |
| Binder | 8/10 | 5695 days | 4% |
| Nicola Thackray | 7/10 | 5698 days | 4% |
| Katy Bourne | 8/10 | 5705 days | 4% |
| Michael Assfalg | 8/10 | 5710 days | 4% |
| Jon_and_Family | 9/10 | 5711 days | 4% |
| M Holierhoek | 7/10 | 5713 days | 4% |
| Berger | 9/10 | 5715 days | 4% |
| Ron Pantzer | 7/10 | 5720 days | 4% |
| Julian Seizinger | 9/10 | 5726 days | 4% |
| Olivia Carvill | 8/10 | 5727 days | 4% |
| Jarob Brezigar | 5/10 | 5732 days | 3% |
| Markus Richert | 6/10 | 5733 days | 4% |
| Christina Fischer | 5/10 | 5734 days | 3% |
| Bruce & Bonnie Childs | 9/10 | 5738 days | 4% |
| hendrik king | 9/10 | 5770 days | 4% |
| craigy | 6/10 | 5923 days | 4% |
| Monica Askew | 9/10 | 5993 days | 4% |
| Adam Gerrard | 8/10 | 6006 days | 4% |
| Sophie & Joffrey | 7/10 | 6010 days | 4% |
| steveE | 7/10 | 6015 days | 4% |
| Alan & Lorna | 8/10 | 6069 days | 4% |
| Mr and Mrs Scott | 5/10 | 6076 days | 3% |
| B Willmore | 10/10 | 6078 days | 4% |
| Pete H | 10/10 | 6085 days | 4% |
| Johan Wisselo | 7/10 | 6096 days | 4% |
| Tanja Titze | 10/10 | 6097 days | 4% |
| Groen | 8/10 | 6101 days | 4% |
| Kasper | 5/10 | 6102 days | 3% |
| Laura Walters | 8/10 | 6103 days | 4% |
| Ines Diana | 8/10 | 6103 days | 4% |
| uleugel | 8/10 | 6113 days | 4% |
| deanlaw | 9/10 | 6149 days | 4% |
| menzel | 8/10 | 6149 days | 4% |
| blokzyl | 7/10 | 6155 days | 4% |
| braunweiler | 9/10 | 6155 days | 4% |
| Marshall | 9/10 | 6168 days | 4% |
| Karin Linder | 9/10 | 6170 days | 4% |
| Lisette X | 7/10 | 6174 days | 4% |
| Louis Duhaime | 8/10 | 6177 days | 4% |
| paulandcathy | 8/10 | 6221 days | 4% |
| clairet | 7/10 | 6275 days | 4% |
| johannac | 7/10 | 6285 days | 4% |
| Miranda | 8/10 | 6288 days | 4% |
| Charles Lyne | 10/10 | 6380 days | 4% |
| Andrew Lonsdale | 5/10 | 6398 days | 3% |
| RubyJ | 8/10 | 6402 days | 4% |
| arthurwa | 10/10 | 6410 days | 4% |
| Peter Jackie | 7/10 | 6413 days | 4% |
| FiensG | 8/10 | 6429 days | 4% |
| Erik | 7/10 | 6432 days | 4% |
| Grimm | 9/10 | 6433 days | 4% |
| Marlena | 10/10 | 6433 days | 4% |
| Nick | 9/10 | 6439 days | 4% |
| RichardE | 9/10 | 6445 days | 4% |
| Sarah | 7/10 | 6446 days | 4% |
| Manfred | 9/10 | 6446 days | 4% |
| Majken | 5/10 | 6453 days | 3% |
| AurelieD | 7/10 | 6457 days | 4% |
| Nanno | 7/10 | 6460 days | 4% |
| MartinD | 7/10 | 6468 days | 4% |
| Danielle | 10/10 | 6474 days | 4% |
| Sonja | 8/10 | 6477 days | 4% |
| Maettu | 8/10 | 6500 days | 4% |
| Stephanie | 9/10 | 6510 days | 4% |
| Katherine | 7/10 | 6515 days | 4% |
| Claire | 7/10 | 6522 days | 4% |
| helen | 8/10 | 6522 days | 4% |
| Maggie | 9/10 | 6528 days | 4% |
| Patricia | 10/10 | 6531 days | 4% |
| Antonella | 9/10 | 6584 days | 4% |
| Gray | 5/10 | 6645 days | 3% |
| Thomas Bachmann | 8/10 | 6658 days | 4% |
| Leanne Priestley | 8/10 | 6781 days | 4% |
| Amy Clark | 7/10 | 6781 days | 4% |
| Toby | 9/10 | 6782 days | 4% |
| Vikki | 10/10 | 6786 days | 4% |
| Ovin | 9/10 | 6786 days | 4% |
| AlanN316 | 9/10 | 6791 days | 4% |
| Yayami Kimura | 9/10 | 6793 days | 4% |
| Demo | 6/10 | 6794 days | 4% |
| RhysP | 8/10 | 6795 days | 4% |
| Sarah Maudsley | 7/10 | 6796 days | 4% |
| Benjamin Krein | 8/10 | 6801 days | 4% |
| Tina Daly | 6/10 | 6802 days | 4% |
| Ohad | 9/10 | 6803 days | 4% |
| Kathy Hawey | 8/10 | 6809 days | 4% |
| David Buckley | 9/10 | 6810 days | 4% |
| Jackie Horwell | 10/10 | 6811 days | 4% |
| Carla | 7/10 | 6822 days | 4% |
| Hanna | 7/10 | 6823 days | 4% |
| Reina Lohaye | 7/10 | 6825 days | 4% |
| Line Oehlinschloger | 5/10 | 6849 days | 3% |
| Tim | 8/10 | 6850 days | 4% |
| Mette de Graap | 7/10 | 6852 days | 4% |
| Andrew Porter | 8/10 | 6858 days | 4% |
| Gerber Liselotte | 9/10 | 6884 days | 4% |
| Samuel Brejeon | 7/10 | 6895 days | 4% |
| Christin | 8/10 | 6900 days | 4% |
| Orla | 3/10 | 6900 days | 2% |
| Pat Brewster | 7/10 | 7012 days | 4% |
| Natalia | 8/10 | 7096 days | 4% |
| Miriam&Eva | 8/10 | 7100 days | 4% |
| Caroline | 8/10 | 7116 days | 4% |
| Klaus | 4/10 | 7117 days | 3% |
| Bonnie | 6/10 | 7120 days | 4% |
| Franklin | 7/10 | 7120 days | 4% |
| Stephanie | 8/10 | 7121 days | 4% |
| andrew julie | 7/10 | 7134 days | 4% |
| Nancy Bill | 7/10 | 7134 days | 4% |
| Daniel | 7/10 | 7136 days | 4% |
| clairekidd | 5/10 | 7139 days | 3% |
| Fred Highsmith | 8/10 | 7140 days | 4% |
| Hannah | 8/10 | 7150 days | 4% |
| Detlef | 5/10 | 7154 days | 3% |
| Delgroot | 8/10 | 7168 days | 4% |
| Herman&Ineke | 5/10 | 7179 days | 3% |
| Janne | 5/10 | 7180 days | 3% |
| Rolf | 9/10 | 7188 days | 4% |
| Nicole | 8/10 | 7188 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
-3.64% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 57 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 | -3.59% |
| 198 | -3.60% |
| 199 | -3.62% |
| 200 | -3.64% |
| 201 | -3.66% |
| 202 | -3.68% |
| 203 | -3.70% |
| … | … |
Balancing Adjustment
7.51% 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.