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
71.15%
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 | 932 days | 100% |
| Eric | 5/10 | 3373 days | 3% |
| Martin Fersebner | 7/10 | 3379 days | 4% |
| Alonso | 8/10 | 3435 days | 4% |
| Andres Gonzalez | 6/10 | 3453 days | 4% |
| Eveline | 8/10 | 3466 days | 4% |
| Anna Gruenewald | 5/10 | 3470 days | 3% |
| Camilla Geert | 6/10 | 3682 days | 2% |
| Sabrina Schneider | 8/10 | 3688 days | 3% |
| Laura Cosquer | 7/10 | 3690 days | 3% |
| Frenziska Schmid | 7/10 | 3703 days | 3% |
| Johanna Kuch | 7/10 | 3731 days | 2% |
| Carmen Pramstaller | 9/10 | 3733 days | 3% |
| Liza Braun | 8/10 | 3734 days | 3% |
| Markus Wabing | 8/10 | 3736 days | 3% |
| Uschi Pongratz | 8/10 | 3736 days | 3% |
| Nita Oussoren | 8/10 | 3736 days | 3% |
| Jessica Ruhland | 6/10 | 3736 days | 2% |
| David Soukal | 7/10 | 3737 days | 2% |
| Sabine Bergen | 7/10 | 3744 days | 2% |
| Sophie NIemann | 9/10 | 3749 days | 2% |
| Josephine | 7/10 | 3757 days | 2% |
| Pierre and Alexandra | 7/10 | 3789 days | 2% |
| Selma Krap | 9/10 | 3795 days | 2% |
| Blandine Giusti | 7/10 | 4057 days | 1% |
| Polly Rider | 8/10 | 4162 days | 0% |
| Greg Gilmore | 8/10 | 4395 days | 2% |
| Fiona Hawkins | 7/10 | 4395 days | 2% |
| Pavel Macek | 9/10 | 4404 days | 2% |
| Anna Sternberg | 5/10 | 4434 days | 1% |
| Roy Matthieu | 6/10 | 4444 days | 1% |
| Julie Ledanois | 7/10 | 4444 days | 2% |
| Pierre Gentile | 6/10 | 4444 days | 1% |
| Cindy Benayoum | 7/10 | 4444 days | 2% |
| Olivia | 8/10 | 4445 days | 2% |
| Callum | 7/10 | 4445 days | 2% |
| Sophia | 6/10 | 4450 days | 1% |
| Andreas Zapke | 8/10 | 4489 days | 2% |
| Simone Pickert | 7/10 | 4490 days | 2% |
| Cindy Bonton | 7/10 | 4500 days | 2% |
| Menu | 8/10 | 4788 days | 2% |
| Christian | 5/10 | 4791 days | 1% |
| Nora | 7/10 | 4791 days | 2% |
| Michael Nolan | 10/10 | 4798 days | 2% |
| Sebastian | 8/10 | 4802 days | 2% |
| Tobi | 9/10 | 4803 days | 2% |
| Chantal Mortel | 7/10 | 4803 days | 2% |
| Alessa Ndra | 10/10 | 4808 days | 2% |
| Fabian Brand | 5/10 | 4819 days | 1% |
| Kyle Guffei | 10/10 | 4821 days | 2% |
| Henrik Steinruecken | 8/10 | 4870 days | 2% |
| Doan | 6/10 | 4893 days | 1% |
| Judy | 10/10 | 4897 days | 2% |
| Petra | 7/10 | 4899 days | 2% |
| Selwindt | 9/10 | 5157 days | 2% |
| Mats Harstedt | 7/10 | 5172 days | 2% |
| Mark Bogton | 8/10 | 5172 days | 2% |
| R E Webb | 9/10 | 5175 days | 2% |
| Roland Hofmann | 7/10 | 5178 days | 2% |
| Lepied | 7/10 | 5179 days | 2% |
| Carla Mathieu | 10/10 | 5182 days | 2% |
| Graham Swinyard | 7/10 | 5186 days | 2% |
| Kurt Furuskar | 9/10 | 5203 days | 2% |
| _mel_ | 8/10 | 5223 days | 2% |
| Theresa | 9/10 | 5270 days | 2% |
| Frans van der Kroon | 8/10 | 5271 days | 2% |
| Elke & Charlotte | 8/10 | 5274 days | 2% |
| Gary A | 9/10 | 5284 days | 2% |
| katel86 | 5/10 | 5345 days | 1% |
| Dogoneit | 4/10 | 5498 days | 1% |
| Shoko Watanabe | 8/10 | 5498 days | 2% |
| Markus | 8/10 | 5501 days | 2% |
| Binder | 8/10 | 5513 days | 2% |
| Nicola Thackray | 7/10 | 5516 days | 2% |
| Katy Bourne | 8/10 | 5523 days | 2% |
| Michael Assfalg | 8/10 | 5528 days | 2% |
| Jon_and_Family | 9/10 | 5529 days | 2% |
| M Holierhoek | 7/10 | 5531 days | 2% |
| Berger | 9/10 | 5533 days | 2% |
| Ron Pantzer | 7/10 | 5538 days | 2% |
| Julian Seizinger | 9/10 | 5544 days | 2% |
| Olivia Carvill | 8/10 | 5545 days | 2% |
| Jarob Brezigar | 5/10 | 5550 days | 1% |
| Markus Richert | 6/10 | 5551 days | 1% |
| Christina Fischer | 5/10 | 5552 days | 1% |
| Bruce & Bonnie Childs | 9/10 | 5556 days | 2% |
| hendrik king | 9/10 | 5588 days | 2% |
| craigy | 6/10 | 5741 days | 1% |
| Monica Askew | 9/10 | 5811 days | 2% |
| Adam Gerrard | 8/10 | 5824 days | 2% |
| Sophie & Joffrey | 7/10 | 5828 days | 2% |
| steveE | 7/10 | 5833 days | 2% |
| Alan & Lorna | 8/10 | 5887 days | 2% |
| Mr and Mrs Scott | 5/10 | 5894 days | 1% |
| B Willmore | 10/10 | 5896 days | 2% |
| Pete H | 10/10 | 5903 days | 2% |
| Johan Wisselo | 7/10 | 5914 days | 2% |
| Tanja Titze | 10/10 | 5915 days | 2% |
| Groen | 8/10 | 5919 days | 2% |
| Kasper | 5/10 | 5920 days | 1% |
| Laura Walters | 8/10 | 5921 days | 2% |
| Ines Diana | 8/10 | 5921 days | 2% |
| uleugel | 8/10 | 5931 days | 2% |
| deanlaw | 9/10 | 5967 days | 2% |
| menzel | 8/10 | 5967 days | 2% |
| blokzyl | 7/10 | 5973 days | 2% |
| braunweiler | 9/10 | 5973 days | 2% |
| Marshall | 9/10 | 5986 days | 2% |
| Karin Linder | 9/10 | 5988 days | 2% |
| Lisette X | 7/10 | 5992 days | 2% |
| Louis Duhaime | 8/10 | 5995 days | 2% |
| paulandcathy | 8/10 | 6039 days | 2% |
| clairet | 7/10 | 6093 days | 2% |
| johannac | 7/10 | 6103 days | 2% |
| Miranda | 8/10 | 6106 days | 2% |
| Charles Lyne | 10/10 | 6198 days | 2% |
| Andrew Lonsdale | 5/10 | 6216 days | 1% |
| RubyJ | 8/10 | 6220 days | 2% |
| arthurwa | 10/10 | 6228 days | 2% |
| Peter Jackie | 7/10 | 6231 days | 2% |
| FiensG | 8/10 | 6247 days | 2% |
| Erik | 7/10 | 6250 days | 2% |
| Grimm | 9/10 | 6251 days | 2% |
| Marlena | 10/10 | 6251 days | 2% |
| Nick | 9/10 | 6257 days | 2% |
| RichardE | 9/10 | 6263 days | 2% |
| Sarah | 7/10 | 6264 days | 2% |
| Manfred | 9/10 | 6264 days | 2% |
| Majken | 5/10 | 6271 days | 1% |
| AurelieD | 7/10 | 6275 days | 2% |
| Nanno | 7/10 | 6278 days | 2% |
| MartinD | 7/10 | 6286 days | 2% |
| Danielle | 10/10 | 6293 days | 2% |
| Sonja | 8/10 | 6295 days | 2% |
| Maettu | 8/10 | 6318 days | 2% |
| Stephanie | 9/10 | 6328 days | 2% |
| Katherine | 7/10 | 6333 days | 2% |
| Claire | 7/10 | 6340 days | 2% |
| helen | 8/10 | 6341 days | 2% |
| Maggie | 9/10 | 6346 days | 2% |
| Patricia | 10/10 | 6349 days | 2% |
| Antonella | 9/10 | 6402 days | 2% |
| Gray | 5/10 | 6464 days | 1% |
| Thomas Bachmann | 8/10 | 6476 days | 2% |
| Leanne Priestley | 8/10 | 6599 days | 2% |
| Amy Clark | 7/10 | 6599 days | 2% |
| Toby | 9/10 | 6600 days | 2% |
| Vikki | 10/10 | 6604 days | 2% |
| Ovin | 9/10 | 6604 days | 2% |
| AlanN316 | 9/10 | 6609 days | 2% |
| Yayami Kimura | 9/10 | 6611 days | 2% |
| Demo | 6/10 | 6612 days | 1% |
| RhysP | 8/10 | 6613 days | 2% |
| Sarah Maudsley | 7/10 | 6614 days | 2% |
| Benjamin Krein | 8/10 | 6619 days | 2% |
| Tina Daly | 6/10 | 6620 days | 1% |
| Ohad | 9/10 | 6621 days | 2% |
| Kathy Hawey | 8/10 | 6627 days | 2% |
| David Buckley | 9/10 | 6628 days | 2% |
| Jackie Horwell | 10/10 | 6629 days | 2% |
| Carla | 7/10 | 6640 days | 2% |
| Hanna | 7/10 | 6641 days | 2% |
| Reina Lohaye | 7/10 | 6643 days | 2% |
| Line Oehlinschloger | 5/10 | 6667 days | 1% |
| Tim | 8/10 | 6668 days | 2% |
| Mette de Graap | 7/10 | 6670 days | 2% |
| Andrew Porter | 8/10 | 6676 days | 2% |
| Gerber Liselotte | 9/10 | 6702 days | 2% |
| Samuel Brejeon | 7/10 | 6713 days | 2% |
| Christin | 8/10 | 6718 days | 2% |
| Orla | 3/10 | 6718 days | 0% |
| Pat Brewster | 7/10 | 6830 days | 2% |
| Natalia | 8/10 | 6914 days | 2% |
| Miriam&Eva | 8/10 | 6918 days | 2% |
| Caroline | 8/10 | 6934 days | 2% |
| Klaus | 4/10 | 6935 days | 1% |
| Bonnie | 6/10 | 6938 days | 1% |
| Franklin | 7/10 | 6938 days | 2% |
| Stephanie | 8/10 | 6939 days | 2% |
| andrew julie | 7/10 | 6952 days | 2% |
| Nancy Bill | 7/10 | 6952 days | 2% |
| Daniel | 7/10 | 6954 days | 2% |
| clairekidd | 5/10 | 6957 days | 1% |
| Fred Highsmith | 8/10 | 6958 days | 2% |
| Hannah | 8/10 | 6968 days | 2% |
| Detlef | 5/10 | 6972 days | 1% |
| Delgroot | 8/10 | 6986 days | 2% |
| Herman&Ineke | 5/10 | 6997 days | 1% |
| Janne | 5/10 | 6998 days | 1% |
| Rolf | 9/10 | 7006 days | 2% |
| Nicole | 8/10 | 7006 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
-3.36% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 69 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 | -3.31% |
| 198 | -3.32% |
| 199 | -3.34% |
| 200 | -3.36% |
| 201 | -3.37% |
| 202 | -3.39% |
| 203 | -3.41% |
| … | … |
Balancing Adjustment
8.32% 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
76%
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.