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
70.03%
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 | 796 days | 100% |
| Eric | 5/10 | 3237 days | 4% |
| Martin Fersebner | 7/10 | 3243 days | 5% |
| Alonso | 8/10 | 3299 days | 5% |
| Andres Gonzalez | 6/10 | 3317 days | 4% |
| Eveline | 8/10 | 3330 days | 5% |
| Anna Gruenewald | 5/10 | 3334 days | 4% |
| Camilla Geert | 6/10 | 3546 days | 3% |
| Sabrina Schneider | 8/10 | 3552 days | 4% |
| Laura Cosquer | 7/10 | 3554 days | 4% |
| Frenziska Schmid | 7/10 | 3567 days | 3% |
| Johanna Kuch | 7/10 | 3595 days | 3% |
| Carmen Pramstaller | 9/10 | 3597 days | 4% |
| Liza Braun | 8/10 | 3598 days | 4% |
| Markus Wabing | 8/10 | 3600 days | 4% |
| Uschi Pongratz | 8/10 | 3600 days | 4% |
| Nita Oussoren | 8/10 | 3600 days | 4% |
| Jessica Ruhland | 6/10 | 3600 days | 3% |
| David Soukal | 7/10 | 3601 days | 3% |
| Sabine Bergen | 7/10 | 3608 days | 3% |
| Sophie NIemann | 9/10 | 3613 days | 3% |
| Josephine | 7/10 | 3621 days | 3% |
| Pierre and Alexandra | 7/10 | 3653 days | 3% |
| Selma Krap | 9/10 | 3659 days | 3% |
| Blandine Giusti | 7/10 | 3921 days | 2% |
| Polly Rider | 8/10 | 4026 days | 2% |
| Greg Gilmore | 8/10 | 4259 days | 0% |
| Fiona Hawkins | 7/10 | 4259 days | 0% |
| Pavel Macek | 9/10 | 4268 days | 0% |
| Anna Sternberg | 5/10 | 4298 days | 0% |
| Roy Matthieu | 6/10 | 4308 days | 0% |
| Julie Ledanois | 7/10 | 4308 days | 0% |
| Pierre Gentile | 6/10 | 4308 days | 0% |
| Cindy Benayoum | 7/10 | 4308 days | 0% |
| Olivia | 8/10 | 4309 days | 0% |
| Callum | 7/10 | 4309 days | 0% |
| Sophia | 6/10 | 4314 days | 0% |
| Andreas Zapke | 8/10 | 4353 days | 0% |
| Simone Pickert | 7/10 | 4354 days | 0% |
| Cindy Bonton | 7/10 | 4364 days | 0% |
| Menu | 8/10 | 4652 days | 2% |
| Christian | 5/10 | 4655 days | 2% |
| Nora | 7/10 | 4655 days | 2% |
| Michael Nolan | 10/10 | 4662 days | 2% |
| Sebastian | 8/10 | 4666 days | 2% |
| Tobi | 9/10 | 4667 days | 2% |
| Chantal Mortel | 7/10 | 4667 days | 2% |
| Alessa Ndra | 10/10 | 4672 days | 2% |
| Fabian Brand | 5/10 | 4683 days | 2% |
| Kyle Guffei | 10/10 | 4685 days | 2% |
| Henrik Steinruecken | 8/10 | 4734 days | 2% |
| Doan | 6/10 | 4757 days | 2% |
| Judy | 10/10 | 4761 days | 2% |
| Petra | 7/10 | 4763 days | 2% |
| Selwindt | 9/10 | 5021 days | 2% |
| Mats Harstedt | 7/10 | 5036 days | 2% |
| Mark Bogton | 8/10 | 5036 days | 2% |
| R E Webb | 9/10 | 5039 days | 2% |
| Roland Hofmann | 7/10 | 5042 days | 2% |
| Lepied | 7/10 | 5043 days | 2% |
| Carla Mathieu | 10/10 | 5046 days | 2% |
| Graham Swinyard | 7/10 | 5050 days | 2% |
| Kurt Furuskar | 9/10 | 5067 days | 2% |
| _mel_ | 8/10 | 5087 days | 2% |
| Theresa | 9/10 | 5134 days | 2% |
| Frans van der Kroon | 8/10 | 5135 days | 2% |
| Elke & Charlotte | 8/10 | 5138 days | 2% |
| Gary A | 9/10 | 5148 days | 2% |
| katel86 | 5/10 | 5209 days | 2% |
| Dogoneit | 4/10 | 5362 days | 1% |
| Shoko Watanabe | 8/10 | 5362 days | 2% |
| Markus | 8/10 | 5365 days | 2% |
| Binder | 8/10 | 5377 days | 2% |
| Nicola Thackray | 7/10 | 5380 days | 2% |
| Katy Bourne | 8/10 | 5387 days | 2% |
| Michael Assfalg | 8/10 | 5392 days | 2% |
| Jon_and_Family | 9/10 | 5393 days | 2% |
| M Holierhoek | 7/10 | 5395 days | 2% |
| Berger | 9/10 | 5397 days | 2% |
| Ron Pantzer | 7/10 | 5402 days | 2% |
| Julian Seizinger | 9/10 | 5408 days | 2% |
| Olivia Carvill | 8/10 | 5409 days | 2% |
| Jarob Brezigar | 5/10 | 5414 days | 2% |
| Markus Richert | 6/10 | 5415 days | 2% |
| Christina Fischer | 5/10 | 5416 days | 2% |
| Bruce & Bonnie Childs | 9/10 | 5420 days | 2% |
| hendrik king | 9/10 | 5452 days | 2% |
| craigy | 6/10 | 5605 days | 2% |
| Monica Askew | 9/10 | 5675 days | 2% |
| Adam Gerrard | 8/10 | 5688 days | 2% |
| Sophie & Joffrey | 7/10 | 5692 days | 2% |
| steveE | 7/10 | 5697 days | 2% |
| Alan & Lorna | 8/10 | 5751 days | 2% |
| Mr and Mrs Scott | 5/10 | 5758 days | 2% |
| B Willmore | 10/10 | 5760 days | 2% |
| Pete H | 10/10 | 5767 days | 2% |
| Johan Wisselo | 7/10 | 5778 days | 2% |
| Tanja Titze | 10/10 | 5779 days | 2% |
| Groen | 8/10 | 5783 days | 2% |
| Kasper | 5/10 | 5784 days | 2% |
| Laura Walters | 8/10 | 5785 days | 2% |
| Ines Diana | 8/10 | 5785 days | 2% |
| uleugel | 8/10 | 5795 days | 2% |
| deanlaw | 9/10 | 5831 days | 2% |
| menzel | 8/10 | 5831 days | 2% |
| blokzyl | 7/10 | 5837 days | 2% |
| braunweiler | 9/10 | 5837 days | 2% |
| Marshall | 9/10 | 5850 days | 2% |
| Karin Linder | 9/10 | 5852 days | 2% |
| Lisette X | 7/10 | 5856 days | 2% |
| Louis Duhaime | 8/10 | 5859 days | 2% |
| paulandcathy | 8/10 | 5903 days | 2% |
| clairet | 7/10 | 5957 days | 2% |
| johannac | 7/10 | 5967 days | 2% |
| Miranda | 8/10 | 5970 days | 2% |
| Charles Lyne | 10/10 | 6062 days | 2% |
| Andrew Lonsdale | 5/10 | 6080 days | 2% |
| RubyJ | 8/10 | 6084 days | 2% |
| arthurwa | 10/10 | 6092 days | 2% |
| Peter Jackie | 7/10 | 6095 days | 2% |
| FiensG | 8/10 | 6111 days | 2% |
| Erik | 7/10 | 6115 days | 2% |
| Grimm | 9/10 | 6116 days | 2% |
| Marlena | 10/10 | 6116 days | 2% |
| Nick | 9/10 | 6121 days | 2% |
| RichardE | 9/10 | 6127 days | 2% |
| Sarah | 7/10 | 6129 days | 2% |
| Manfred | 9/10 | 6129 days | 2% |
| Majken | 5/10 | 6136 days | 2% |
| AurelieD | 7/10 | 6139 days | 2% |
| Nanno | 7/10 | 6143 days | 2% |
| MartinD | 7/10 | 6150 days | 2% |
| Danielle | 10/10 | 6157 days | 2% |
| Sonja | 8/10 | 6159 days | 2% |
| Maettu | 8/10 | 6182 days | 2% |
| Stephanie | 9/10 | 6192 days | 2% |
| Katherine | 7/10 | 6197 days | 2% |
| Claire | 7/10 | 6205 days | 2% |
| helen | 8/10 | 6205 days | 2% |
| Maggie | 9/10 | 6211 days | 2% |
| Patricia | 10/10 | 6214 days | 2% |
| Antonella | 9/10 | 6267 days | 2% |
| Gray | 5/10 | 6328 days | 2% |
| Thomas Bachmann | 8/10 | 6341 days | 2% |
| Leanne Priestley | 8/10 | 6463 days | 2% |
| Amy Clark | 7/10 | 6463 days | 2% |
| Toby | 9/10 | 6464 days | 2% |
| Vikki | 10/10 | 6468 days | 2% |
| Ovin | 9/10 | 6468 days | 2% |
| AlanN316 | 9/10 | 6473 days | 2% |
| Yayami Kimura | 9/10 | 6475 days | 2% |
| Demo | 6/10 | 6476 days | 2% |
| RhysP | 8/10 | 6477 days | 2% |
| Sarah Maudsley | 7/10 | 6478 days | 2% |
| Benjamin Krein | 8/10 | 6483 days | 2% |
| Tina Daly | 6/10 | 6484 days | 2% |
| Ohad | 9/10 | 6485 days | 2% |
| Kathy Hawey | 8/10 | 6491 days | 2% |
| David Buckley | 9/10 | 6492 days | 2% |
| Jackie Horwell | 10/10 | 6493 days | 2% |
| Carla | 7/10 | 6504 days | 2% |
| Hanna | 7/10 | 6505 days | 2% |
| Reina Lohaye | 7/10 | 6507 days | 2% |
| Line Oehlinschloger | 5/10 | 6531 days | 2% |
| Tim | 8/10 | 6532 days | 2% |
| Mette de Graap | 7/10 | 6534 days | 2% |
| Andrew Porter | 8/10 | 6540 days | 2% |
| Gerber Liselotte | 9/10 | 6566 days | 2% |
| Samuel Brejeon | 7/10 | 6577 days | 2% |
| Christin | 8/10 | 6582 days | 2% |
| Orla | 3/10 | 6582 days | 1% |
| Pat Brewster | 7/10 | 6694 days | 2% |
| Natalia | 8/10 | 6778 days | 2% |
| Miriam&Eva | 8/10 | 6782 days | 2% |
| Caroline | 8/10 | 6798 days | 2% |
| Klaus | 4/10 | 6799 days | 1% |
| Bonnie | 6/10 | 6802 days | 2% |
| Franklin | 7/10 | 6802 days | 2% |
| Stephanie | 8/10 | 6803 days | 2% |
| andrew julie | 7/10 | 6816 days | 2% |
| Nancy Bill | 7/10 | 6816 days | 2% |
| Daniel | 7/10 | 6818 days | 2% |
| clairekidd | 5/10 | 6821 days | 2% |
| Fred Highsmith | 8/10 | 6822 days | 2% |
| Hannah | 8/10 | 6832 days | 2% |
| Detlef | 5/10 | 6836 days | 2% |
| Delgroot | 8/10 | 6850 days | 2% |
| Herman&Ineke | 5/10 | 6861 days | 2% |
| Janne | 5/10 | 6862 days | 2% |
| Rolf | 9/10 | 6870 days | 2% |
| Nicole | 8/10 | 6870 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
9.54% 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.