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
70.05%
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 | 799 days | 100% |
| Eric | 5/10 | 3240 days | 4% |
| Martin Fersebner | 7/10 | 3246 days | 5% |
| Alonso | 8/10 | 3302 days | 5% |
| Andres Gonzalez | 6/10 | 3320 days | 4% |
| Eveline | 8/10 | 3333 days | 5% |
| Anna Gruenewald | 5/10 | 3337 days | 4% |
| Camilla Geert | 6/10 | 3549 days | 3% |
| Sabrina Schneider | 8/10 | 3555 days | 4% |
| Laura Cosquer | 7/10 | 3557 days | 4% |
| Frenziska Schmid | 7/10 | 3570 days | 3% |
| Johanna Kuch | 7/10 | 3598 days | 3% |
| Carmen Pramstaller | 9/10 | 3600 days | 4% |
| Liza Braun | 8/10 | 3601 days | 4% |
| Markus Wabing | 8/10 | 3603 days | 4% |
| Uschi Pongratz | 8/10 | 3603 days | 4% |
| Nita Oussoren | 8/10 | 3603 days | 4% |
| Jessica Ruhland | 6/10 | 3603 days | 3% |
| David Soukal | 7/10 | 3604 days | 3% |
| Sabine Bergen | 7/10 | 3611 days | 3% |
| Sophie NIemann | 9/10 | 3616 days | 4% |
| Josephine | 7/10 | 3624 days | 3% |
| Pierre and Alexandra | 7/10 | 3656 days | 3% |
| Selma Krap | 9/10 | 3662 days | 3% |
| Blandine Giusti | 7/10 | 3924 days | 2% |
| Polly Rider | 8/10 | 4029 days | 2% |
| Greg Gilmore | 8/10 | 4262 days | 0% |
| Fiona Hawkins | 7/10 | 4262 days | 0% |
| Pavel Macek | 9/10 | 4271 days | 0% |
| Anna Sternberg | 5/10 | 4301 days | 0% |
| Roy Matthieu | 6/10 | 4311 days | 0% |
| Julie Ledanois | 7/10 | 4311 days | 0% |
| Pierre Gentile | 6/10 | 4311 days | 0% |
| Cindy Benayoum | 7/10 | 4311 days | 0% |
| Olivia | 8/10 | 4312 days | 0% |
| Callum | 7/10 | 4312 days | 0% |
| Sophia | 6/10 | 4317 days | 0% |
| Andreas Zapke | 8/10 | 4356 days | 0% |
| Simone Pickert | 7/10 | 4357 days | 0% |
| Cindy Bonton | 7/10 | 4367 days | 0% |
| Menu | 8/10 | 4655 days | 2% |
| Christian | 5/10 | 4658 days | 2% |
| Nora | 7/10 | 4658 days | 2% |
| Michael Nolan | 10/10 | 4665 days | 2% |
| Sebastian | 8/10 | 4669 days | 2% |
| Tobi | 9/10 | 4670 days | 2% |
| Chantal Mortel | 7/10 | 4670 days | 2% |
| Alessa Ndra | 10/10 | 4675 days | 2% |
| Fabian Brand | 5/10 | 4686 days | 2% |
| Kyle Guffei | 10/10 | 4688 days | 2% |
| Henrik Steinruecken | 8/10 | 4737 days | 2% |
| Doan | 6/10 | 4760 days | 2% |
| Judy | 10/10 | 4764 days | 2% |
| Petra | 7/10 | 4766 days | 2% |
| Selwindt | 9/10 | 5024 days | 2% |
| Mats Harstedt | 7/10 | 5039 days | 2% |
| Mark Bogton | 8/10 | 5039 days | 2% |
| R E Webb | 9/10 | 5042 days | 2% |
| Roland Hofmann | 7/10 | 5045 days | 2% |
| Lepied | 7/10 | 5046 days | 2% |
| Carla Mathieu | 10/10 | 5049 days | 2% |
| Graham Swinyard | 7/10 | 5053 days | 2% |
| Kurt Furuskar | 9/10 | 5070 days | 2% |
| _mel_ | 8/10 | 5090 days | 2% |
| Theresa | 9/10 | 5137 days | 2% |
| Frans van der Kroon | 8/10 | 5138 days | 2% |
| Elke & Charlotte | 8/10 | 5141 days | 2% |
| Gary A | 9/10 | 5151 days | 2% |
| katel86 | 5/10 | 5212 days | 2% |
| Dogoneit | 4/10 | 5365 days | 2% |
| Shoko Watanabe | 8/10 | 5365 days | 2% |
| Markus | 8/10 | 5368 days | 2% |
| Binder | 8/10 | 5380 days | 2% |
| Nicola Thackray | 7/10 | 5383 days | 2% |
| Katy Bourne | 8/10 | 5390 days | 2% |
| Michael Assfalg | 8/10 | 5395 days | 2% |
| Jon_and_Family | 9/10 | 5396 days | 2% |
| M Holierhoek | 7/10 | 5398 days | 2% |
| Berger | 9/10 | 5400 days | 2% |
| Ron Pantzer | 7/10 | 5405 days | 2% |
| Julian Seizinger | 9/10 | 5411 days | 2% |
| Olivia Carvill | 8/10 | 5412 days | 2% |
| Jarob Brezigar | 5/10 | 5417 days | 2% |
| Markus Richert | 6/10 | 5418 days | 2% |
| Christina Fischer | 5/10 | 5419 days | 2% |
| Bruce & Bonnie Childs | 9/10 | 5423 days | 2% |
| hendrik king | 9/10 | 5455 days | 2% |
| craigy | 6/10 | 5608 days | 2% |
| Monica Askew | 9/10 | 5678 days | 2% |
| Adam Gerrard | 8/10 | 5691 days | 2% |
| Sophie & Joffrey | 7/10 | 5695 days | 2% |
| steveE | 7/10 | 5700 days | 2% |
| Alan & Lorna | 8/10 | 5754 days | 2% |
| Mr and Mrs Scott | 5/10 | 5761 days | 2% |
| B Willmore | 10/10 | 5763 days | 2% |
| Pete H | 10/10 | 5770 days | 2% |
| Johan Wisselo | 7/10 | 5781 days | 2% |
| Tanja Titze | 10/10 | 5782 days | 2% |
| Groen | 8/10 | 5786 days | 2% |
| Kasper | 5/10 | 5787 days | 2% |
| Laura Walters | 8/10 | 5788 days | 2% |
| Ines Diana | 8/10 | 5788 days | 2% |
| uleugel | 8/10 | 5798 days | 2% |
| deanlaw | 9/10 | 5834 days | 2% |
| menzel | 8/10 | 5834 days | 2% |
| blokzyl | 7/10 | 5840 days | 2% |
| braunweiler | 9/10 | 5840 days | 2% |
| Marshall | 9/10 | 5853 days | 2% |
| Karin Linder | 9/10 | 5855 days | 2% |
| Lisette X | 7/10 | 5859 days | 2% |
| Louis Duhaime | 8/10 | 5862 days | 2% |
| paulandcathy | 8/10 | 5906 days | 2% |
| clairet | 7/10 | 5960 days | 2% |
| johannac | 7/10 | 5970 days | 2% |
| Miranda | 8/10 | 5973 days | 2% |
| Charles Lyne | 10/10 | 6065 days | 2% |
| Andrew Lonsdale | 5/10 | 6083 days | 2% |
| RubyJ | 8/10 | 6087 days | 2% |
| arthurwa | 10/10 | 6095 days | 2% |
| Peter Jackie | 7/10 | 6098 days | 2% |
| FiensG | 8/10 | 6114 days | 2% |
| Erik | 7/10 | 6117 days | 2% |
| Grimm | 9/10 | 6118 days | 2% |
| Marlena | 10/10 | 6118 days | 2% |
| Nick | 9/10 | 6123 days | 2% |
| RichardE | 9/10 | 6130 days | 2% |
| Sarah | 7/10 | 6131 days | 2% |
| Manfred | 9/10 | 6131 days | 2% |
| Majken | 5/10 | 6138 days | 2% |
| AurelieD | 7/10 | 6142 days | 2% |
| Nanno | 7/10 | 6145 days | 2% |
| MartinD | 7/10 | 6153 days | 2% |
| Danielle | 10/10 | 6159 days | 2% |
| Sonja | 8/10 | 6162 days | 2% |
| Maettu | 8/10 | 6185 days | 2% |
| Stephanie | 9/10 | 6195 days | 2% |
| Katherine | 7/10 | 6199 days | 2% |
| Claire | 7/10 | 6207 days | 2% |
| helen | 8/10 | 6207 days | 2% |
| Maggie | 9/10 | 6213 days | 2% |
| Patricia | 10/10 | 6216 days | 2% |
| Antonella | 9/10 | 6269 days | 2% |
| Gray | 5/10 | 6330 days | 2% |
| Thomas Bachmann | 8/10 | 6343 days | 2% |
| Leanne Priestley | 8/10 | 6466 days | 2% |
| Amy Clark | 7/10 | 6466 days | 2% |
| Toby | 9/10 | 6467 days | 2% |
| Vikki | 10/10 | 6471 days | 2% |
| Ovin | 9/10 | 6471 days | 2% |
| AlanN316 | 9/10 | 6476 days | 2% |
| Yayami Kimura | 9/10 | 6478 days | 2% |
| Demo | 6/10 | 6479 days | 2% |
| RhysP | 8/10 | 6480 days | 2% |
| Sarah Maudsley | 7/10 | 6481 days | 2% |
| Benjamin Krein | 8/10 | 6486 days | 2% |
| Tina Daly | 6/10 | 6487 days | 2% |
| Ohad | 9/10 | 6488 days | 2% |
| Kathy Hawey | 8/10 | 6494 days | 2% |
| David Buckley | 9/10 | 6495 days | 2% |
| Jackie Horwell | 10/10 | 6496 days | 2% |
| Carla | 7/10 | 6507 days | 2% |
| Hanna | 7/10 | 6508 days | 2% |
| Reina Lohaye | 7/10 | 6510 days | 2% |
| Line Oehlinschloger | 5/10 | 6534 days | 2% |
| Tim | 8/10 | 6535 days | 2% |
| Mette de Graap | 7/10 | 6537 days | 2% |
| Andrew Porter | 8/10 | 6543 days | 2% |
| Gerber Liselotte | 9/10 | 6569 days | 2% |
| Samuel Brejeon | 7/10 | 6580 days | 2% |
| Christin | 8/10 | 6585 days | 2% |
| Orla | 3/10 | 6585 days | 1% |
| Pat Brewster | 7/10 | 6697 days | 2% |
| Natalia | 8/10 | 6781 days | 2% |
| Miriam&Eva | 8/10 | 6785 days | 2% |
| Caroline | 8/10 | 6801 days | 2% |
| Klaus | 4/10 | 6802 days | 2% |
| Bonnie | 6/10 | 6805 days | 2% |
| Franklin | 7/10 | 6805 days | 2% |
| Stephanie | 8/10 | 6806 days | 2% |
| andrew julie | 7/10 | 6819 days | 2% |
| Nancy Bill | 7/10 | 6819 days | 2% |
| Daniel | 7/10 | 6821 days | 2% |
| clairekidd | 5/10 | 6824 days | 2% |
| Fred Highsmith | 8/10 | 6825 days | 2% |
| Hannah | 8/10 | 6835 days | 2% |
| Detlef | 5/10 | 6839 days | 2% |
| Delgroot | 8/10 | 6853 days | 2% |
| Herman&Ineke | 5/10 | 6864 days | 2% |
| Janne | 5/10 | 6865 days | 2% |
| Rolf | 9/10 | 6873 days | 2% |
| Nicole | 8/10 | 6873 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
-4.07% 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 | -4.01% |
| 198 | -4.03% |
| 199 | -4.05% |
| 200 | -4.07% |
| 201 | -4.09% |
| 202 | -4.11% |
| 203 | -4.13% |
| … | … |
Balancing Adjustment
9.53% 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.