Hi, 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 191 valid reviews. There are no invalid reviews 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
68.66%
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 | 531 days | 100% |
| Eric | 5/10 | 2972 days | 3% |
| Martin Fersebner | 7/10 | 2978 days | 4% |
| Alonso | 8/10 | 3034 days | 4% |
| Andres Gonzalez | 6/10 | 3052 days | 3% |
| Eveline | 8/10 | 3065 days | 4% |
| Anna Gruenewald | 5/10 | 3069 days | 3% |
| Camilla Geert | 6/10 | 3281 days | 2% |
| Sabrina Schneider | 8/10 | 3287 days | 3% |
| Laura Cosquer | 7/10 | 3289 days | 3% |
| Frenziska Schmid | 7/10 | 3302 days | 3% |
| Johanna Kuch | 7/10 | 3330 days | 3% |
| Carmen Pramstaller | 9/10 | 3332 days | 3% |
| Liza Braun | 8/10 | 3333 days | 3% |
| Markus Wabing | 8/10 | 3335 days | 3% |
| Uschi Pongratz | 8/10 | 3335 days | 3% |
| Nita Oussoren | 8/10 | 3335 days | 3% |
| Jessica Ruhland | 6/10 | 3335 days | 2% |
| David Soukal | 7/10 | 3336 days | 3% |
| Sabine Bergen | 7/10 | 3343 days | 3% |
| Sophie NIemann | 9/10 | 3348 days | 3% |
| Josephine | 7/10 | 3356 days | 2% |
| Pierre and Alexandra | 7/10 | 3388 days | 2% |
| Selma Krap | 9/10 | 3394 days | 3% |
| Blandine Giusti | 7/10 | 3656 days | 1% |
| Polly Rider | 8/10 | 3761 days | 1% |
| Greg Gilmore | 8/10 | 3994 days | 0% |
| Fiona Hawkins | 7/10 | 3994 days | 0% |
| Pavel Macek | 9/10 | 4003 days | 0% |
| Anna Sternberg | 5/10 | 4033 days | 0% |
| Roy Matthieu | 6/10 | 4043 days | 0% |
| Julie Ledanois | 7/10 | 4043 days | 0% |
| Pierre Gentile | 6/10 | 4043 days | 0% |
| Cindy Benayoum | 7/10 | 4043 days | 0% |
| Olivia | 8/10 | 4044 days | 0% |
| Callum | 7/10 | 4044 days | 0% |
| Sophia | 6/10 | 4049 days | 0% |
| Andreas Zapke | 8/10 | 4088 days | 0% |
| Simone Pickert | 7/10 | 4089 days | 0% |
| Cindy Bonton | 7/10 | 4099 days | 0% |
| Menu | 8/10 | 4387 days | 1% |
| Christian | 5/10 | 4390 days | 0% |
| Nora | 7/10 | 4390 days | 1% |
| Michael Nolan | 10/10 | 4397 days | 1% |
| Sebastian | 8/10 | 4401 days | 1% |
| Tobi | 9/10 | 4402 days | 1% |
| Chantal Mortel | 7/10 | 4402 days | 1% |
| Alessa Ndra | 10/10 | 4407 days | 1% |
| Fabian Brand | 5/10 | 4418 days | 0% |
| Kyle Guffei | 10/10 | 4420 days | 1% |
| Henrik Steinruecken | 8/10 | 4469 days | 1% |
| Doan | 6/10 | 4492 days | 1% |
| Judy | 10/10 | 4496 days | 1% |
| Petra | 7/10 | 4498 days | 1% |
| Selwindt | 9/10 | 4756 days | 1% |
| Mats Harstedt | 7/10 | 4771 days | 1% |
| Mark Bogton | 8/10 | 4771 days | 1% |
| R E Webb | 9/10 | 4774 days | 1% |
| Roland Hofmann | 7/10 | 4777 days | 1% |
| Lepied | 7/10 | 4778 days | 1% |
| Carla Mathieu | 10/10 | 4781 days | 1% |
| Graham Swinyard | 7/10 | 4785 days | 1% |
| Kurt Furuskar | 9/10 | 4802 days | 1% |
| _mel_ | 8/10 | 4822 days | 1% |
| Theresa | 9/10 | 4869 days | 1% |
| Frans van der Kroon | 8/10 | 4870 days | 1% |
| Elke & Charlotte | 8/10 | 4873 days | 1% |
| Gary A | 9/10 | 4883 days | 1% |
| katel86 | 5/10 | 4944 days | 0% |
| Dogoneit | 4/10 | 5097 days | 0% |
| Shoko Watanabe | 8/10 | 5097 days | 1% |
| Markus | 8/10 | 5100 days | 1% |
| Binder | 8/10 | 5112 days | 1% |
| Nicola Thackray | 7/10 | 5115 days | 1% |
| Katy Bourne | 8/10 | 5122 days | 1% |
| Michael Assfalg | 8/10 | 5127 days | 1% |
| Jon_and_Family | 9/10 | 5128 days | 1% |
| M Holierhoek | 7/10 | 5130 days | 1% |
| Berger | 9/10 | 5132 days | 1% |
| Ron Pantzer | 7/10 | 5137 days | 1% |
| Julian Seizinger | 9/10 | 5143 days | 1% |
| Olivia Carvill | 8/10 | 5144 days | 1% |
| Jarob Brezigar | 5/10 | 5149 days | 0% |
| Markus Richert | 6/10 | 5150 days | 1% |
| Christina Fischer | 5/10 | 5151 days | 0% |
| Bruce & Bonnie Childs | 9/10 | 5155 days | 1% |
| hendrik king | 9/10 | 5187 days | 1% |
| craigy | 6/10 | 5340 days | 1% |
| Monica Askew | 9/10 | 5410 days | 1% |
| Adam Gerrard | 8/10 | 5423 days | 1% |
| Sophie & Joffrey | 7/10 | 5427 days | 1% |
| steveE | 7/10 | 5432 days | 1% |
| Alan & Lorna | 8/10 | 5486 days | 1% |
| Mr and Mrs Scott | 5/10 | 5493 days | 0% |
| B Willmore | 10/10 | 5495 days | 1% |
| Pete H | 10/10 | 5502 days | 1% |
| Johan Wisselo | 7/10 | 5513 days | 1% |
| Tanja Titze | 10/10 | 5514 days | 1% |
| Groen | 8/10 | 5518 days | 1% |
| Kasper | 5/10 | 5519 days | 0% |
| Laura Walters | 8/10 | 5520 days | 1% |
| Ines Diana | 8/10 | 5520 days | 1% |
| uleugel | 8/10 | 5530 days | 1% |
| deanlaw | 9/10 | 5566 days | 1% |
| menzel | 8/10 | 5566 days | 1% |
| blokzyl | 7/10 | 5572 days | 1% |
| braunweiler | 9/10 | 5572 days | 1% |
| Marshall | 9/10 | 5585 days | 1% |
| Karin Linder | 9/10 | 5587 days | 1% |
| Lisette X | 7/10 | 5591 days | 1% |
| Louis Duhaime | 8/10 | 5594 days | 1% |
| paulandcathy | 8/10 | 5638 days | 1% |
| clairet | 7/10 | 5692 days | 1% |
| johannac | 7/10 | 5702 days | 1% |
| Miranda | 8/10 | 5705 days | 1% |
| Charles Lyne | 10/10 | 5797 days | 1% |
| Andrew Lonsdale | 5/10 | 5815 days | 0% |
| RubyJ | 8/10 | 5819 days | 1% |
| arthurwa | 10/10 | 5827 days | 1% |
| Peter Jackie | 7/10 | 5830 days | 1% |
| FiensG | 8/10 | 5846 days | 1% |
| Erik | 7/10 | 5849 days | 1% |
| Grimm | 9/10 | 5850 days | 1% |
| Marlena | 10/10 | 5850 days | 1% |
| Nick | 9/10 | 5856 days | 1% |
| RichardE | 9/10 | 5862 days | 1% |
| Sarah | 7/10 | 5863 days | 1% |
| Manfred | 9/10 | 5863 days | 1% |
| Majken | 5/10 | 5870 days | 0% |
| AurelieD | 7/10 | 5874 days | 1% |
| Nanno | 7/10 | 5877 days | 1% |
| MartinD | 7/10 | 5885 days | 1% |
| Danielle | 10/10 | 5891 days | 1% |
| Sonja | 8/10 | 5894 days | 1% |
| Maettu | 8/10 | 5917 days | 1% |
| Stephanie | 9/10 | 5927 days | 1% |
| Katherine | 7/10 | 5931 days | 1% |
| Claire | 7/10 | 5939 days | 1% |
| helen | 8/10 | 5939 days | 1% |
| Maggie | 9/10 | 5945 days | 1% |
| Patricia | 10/10 | 5948 days | 1% |
| Antonella | 9/10 | 6001 days | 1% |
| Gray | 5/10 | 6062 days | 0% |
| Thomas Bachmann | 8/10 | 6075 days | 1% |
| Leanne Priestley | 8/10 | 6198 days | 1% |
| Amy Clark | 7/10 | 6198 days | 1% |
| Toby | 9/10 | 6199 days | 1% |
| Vikki | 10/10 | 6203 days | 1% |
| Ovin | 9/10 | 6203 days | 1% |
| AlanN316 | 9/10 | 6208 days | 1% |
| Yayami Kimura | 9/10 | 6210 days | 1% |
| Demo | 6/10 | 6211 days | 1% |
| RhysP | 8/10 | 6212 days | 1% |
| Sarah Maudsley | 7/10 | 6213 days | 1% |
| Benjamin Krein | 8/10 | 6218 days | 1% |
| Tina Daly | 6/10 | 6219 days | 1% |
| Ohad | 9/10 | 6220 days | 1% |
| Kathy Hawey | 8/10 | 6226 days | 1% |
| David Buckley | 9/10 | 6227 days | 1% |
| Jackie Horwell | 10/10 | 6228 days | 1% |
| Carla | 7/10 | 6239 days | 1% |
| Hanna | 7/10 | 6240 days | 1% |
| Reina Lohaye | 7/10 | 6242 days | 1% |
| Line Oehlinschloger | 5/10 | 6266 days | 0% |
| Tim | 8/10 | 6267 days | 1% |
| Mette de Graap | 7/10 | 6269 days | 1% |
| Andrew Porter | 8/10 | 6275 days | 1% |
| Gerber Liselotte | 9/10 | 6301 days | 1% |
| Samuel Brejeon | 7/10 | 6312 days | 1% |
| Christin | 8/10 | 6317 days | 1% |
| Orla | 3/10 | 6317 days | 0% |
| Pat Brewster | 7/10 | 6429 days | 1% |
| Natalia | 8/10 | 6513 days | 1% |
| Miriam&Eva | 8/10 | 6517 days | 1% |
| Caroline | 8/10 | 6533 days | 1% |
| Klaus | 4/10 | 6534 days | 0% |
| Bonnie | 6/10 | 6537 days | 1% |
| Franklin | 7/10 | 6537 days | 1% |
| Stephanie | 8/10 | 6538 days | 1% |
| andrew julie | 7/10 | 6551 days | 1% |
| Nancy Bill | 7/10 | 6551 days | 1% |
| Daniel | 7/10 | 6553 days | 1% |
| clairekidd | 5/10 | 6556 days | 0% |
| Fred Highsmith | 8/10 | 6557 days | 1% |
| Hannah | 8/10 | 6567 days | 1% |
| Detlef | 5/10 | 6571 days | 0% |
| Delgroot | 8/10 | 6585 days | 1% |
| Herman&Ineke | 5/10 | 6596 days | 0% |
| Janne | 5/10 | 6597 days | 0% |
| Rolf | 9/10 | 6605 days | 1% |
| Nicole | 8/10 | 6605 days | 1% |
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
-3.99% 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 | -3.93% |
| 198 | -3.95% |
| 199 | -3.97% |
| 200 | -3.99% |
| 201 | -4.01% |
| 202 | -4.03% |
| 203 | -4.05% |
| … | … |
Balancing Adjustment
10.45% 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.