Hey, 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
70.09%
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 | 806 days | 100% |
| Eric | 5/10 | 3247 days | 4% |
| Martin Fersebner | 7/10 | 3253 days | 5% |
| Alonso | 8/10 | 3309 days | 5% |
| Andres Gonzalez | 6/10 | 3327 days | 4% |
| Eveline | 8/10 | 3340 days | 5% |
| Anna Gruenewald | 5/10 | 3344 days | 4% |
| Camilla Geert | 6/10 | 3556 days | 3% |
| Sabrina Schneider | 8/10 | 3562 days | 4% |
| Laura Cosquer | 7/10 | 3564 days | 4% |
| Frenziska Schmid | 7/10 | 3577 days | 4% |
| Johanna Kuch | 7/10 | 3605 days | 3% |
| Carmen Pramstaller | 9/10 | 3607 days | 4% |
| Liza Braun | 8/10 | 3608 days | 4% |
| Markus Wabing | 8/10 | 3610 days | 4% |
| Uschi Pongratz | 8/10 | 3610 days | 4% |
| Nita Oussoren | 8/10 | 3610 days | 4% |
| Jessica Ruhland | 6/10 | 3610 days | 3% |
| David Soukal | 7/10 | 3611 days | 3% |
| Sabine Bergen | 7/10 | 3618 days | 3% |
| Sophie NIemann | 9/10 | 3623 days | 4% |
| Josephine | 7/10 | 3631 days | 3% |
| Pierre and Alexandra | 7/10 | 3663 days | 3% |
| Selma Krap | 9/10 | 3669 days | 3% |
| Blandine Giusti | 7/10 | 3931 days | 2% |
| Polly Rider | 8/10 | 4036 days | 2% |
| Greg Gilmore | 8/10 | 4268 days | 0% |
| Fiona Hawkins | 7/10 | 4268 days | 0% |
| Pavel Macek | 9/10 | 4278 days | 0% |
| Anna Sternberg | 5/10 | 4308 days | 0% |
| Roy Matthieu | 6/10 | 4318 days | 0% |
| Julie Ledanois | 7/10 | 4318 days | 0% |
| Pierre Gentile | 6/10 | 4318 days | 0% |
| Cindy Benayoum | 7/10 | 4318 days | 0% |
| Olivia | 8/10 | 4319 days | 0% |
| Callum | 7/10 | 4319 days | 0% |
| Sophia | 6/10 | 4324 days | 0% |
| Andreas Zapke | 8/10 | 4363 days | 0% |
| Simone Pickert | 7/10 | 4364 days | 0% |
| Cindy Bonton | 7/10 | 4374 days | 0% |
| Menu | 8/10 | 4662 days | 2% |
| Christian | 5/10 | 4665 days | 2% |
| Nora | 7/10 | 4665 days | 2% |
| Michael Nolan | 10/10 | 4672 days | 2% |
| Sebastian | 8/10 | 4676 days | 2% |
| Tobi | 9/10 | 4677 days | 2% |
| Chantal Mortel | 7/10 | 4677 days | 2% |
| Alessa Ndra | 10/10 | 4682 days | 2% |
| Fabian Brand | 5/10 | 4693 days | 2% |
| Kyle Guffei | 10/10 | 4695 days | 2% |
| Henrik Steinruecken | 8/10 | 4744 days | 2% |
| Doan | 6/10 | 4767 days | 2% |
| Judy | 10/10 | 4771 days | 2% |
| Petra | 7/10 | 4773 days | 2% |
| Selwindt | 9/10 | 5031 days | 2% |
| Mats Harstedt | 7/10 | 5046 days | 2% |
| Mark Bogton | 8/10 | 5046 days | 2% |
| R E Webb | 9/10 | 5049 days | 2% |
| Roland Hofmann | 7/10 | 5052 days | 2% |
| Lepied | 7/10 | 5053 days | 2% |
| Carla Mathieu | 10/10 | 5056 days | 2% |
| Graham Swinyard | 7/10 | 5060 days | 2% |
| Kurt Furuskar | 9/10 | 5077 days | 2% |
| _mel_ | 8/10 | 5097 days | 2% |
| Theresa | 9/10 | 5144 days | 2% |
| Frans van der Kroon | 8/10 | 5145 days | 2% |
| Elke & Charlotte | 8/10 | 5148 days | 2% |
| Gary A | 9/10 | 5158 days | 2% |
| katel86 | 5/10 | 5218 days | 2% |
| Dogoneit | 4/10 | 5372 days | 2% |
| Shoko Watanabe | 8/10 | 5372 days | 2% |
| Markus | 8/10 | 5375 days | 2% |
| Binder | 8/10 | 5387 days | 2% |
| Nicola Thackray | 7/10 | 5390 days | 2% |
| Katy Bourne | 8/10 | 5397 days | 2% |
| Michael Assfalg | 8/10 | 5402 days | 2% |
| Jon_and_Family | 9/10 | 5403 days | 2% |
| M Holierhoek | 7/10 | 5405 days | 2% |
| Berger | 9/10 | 5407 days | 2% |
| Ron Pantzer | 7/10 | 5412 days | 2% |
| Julian Seizinger | 9/10 | 5418 days | 2% |
| Olivia Carvill | 8/10 | 5419 days | 2% |
| Jarob Brezigar | 5/10 | 5424 days | 2% |
| Markus Richert | 6/10 | 5425 days | 2% |
| Christina Fischer | 5/10 | 5426 days | 2% |
| Bruce & Bonnie Childs | 9/10 | 5430 days | 2% |
| hendrik king | 9/10 | 5462 days | 2% |
| craigy | 6/10 | 5614 days | 2% |
| Monica Askew | 9/10 | 5684 days | 2% |
| Adam Gerrard | 8/10 | 5697 days | 2% |
| Sophie & Joffrey | 7/10 | 5701 days | 2% |
| steveE | 7/10 | 5706 days | 2% |
| Alan & Lorna | 8/10 | 5761 days | 2% |
| Mr and Mrs Scott | 5/10 | 5768 days | 2% |
| B Willmore | 10/10 | 5770 days | 2% |
| Pete H | 10/10 | 5777 days | 2% |
| Johan Wisselo | 7/10 | 5788 days | 2% |
| Tanja Titze | 10/10 | 5789 days | 2% |
| Groen | 8/10 | 5793 days | 2% |
| Kasper | 5/10 | 5794 days | 2% |
| Laura Walters | 8/10 | 5795 days | 2% |
| Ines Diana | 8/10 | 5795 days | 2% |
| uleugel | 8/10 | 5805 days | 2% |
| deanlaw | 9/10 | 5841 days | 2% |
| menzel | 8/10 | 5841 days | 2% |
| blokzyl | 7/10 | 5847 days | 2% |
| braunweiler | 9/10 | 5847 days | 2% |
| Marshall | 9/10 | 5860 days | 2% |
| Karin Linder | 9/10 | 5862 days | 2% |
| Lisette X | 7/10 | 5866 days | 2% |
| Louis Duhaime | 8/10 | 5869 days | 2% |
| paulandcathy | 8/10 | 5913 days | 2% |
| clairet | 7/10 | 5966 days | 2% |
| johannac | 7/10 | 5976 days | 2% |
| Miranda | 8/10 | 5979 days | 2% |
| Charles Lyne | 10/10 | 6071 days | 2% |
| Andrew Lonsdale | 5/10 | 6089 days | 2% |
| RubyJ | 8/10 | 6093 days | 2% |
| arthurwa | 10/10 | 6102 days | 2% |
| Peter Jackie | 7/10 | 6105 days | 2% |
| FiensG | 8/10 | 6121 days | 2% |
| Erik | 7/10 | 6124 days | 2% |
| Grimm | 9/10 | 6125 days | 2% |
| Marlena | 10/10 | 6125 days | 2% |
| Nick | 9/10 | 6130 days | 2% |
| RichardE | 9/10 | 6137 days | 2% |
| Sarah | 7/10 | 6138 days | 2% |
| Manfred | 9/10 | 6138 days | 2% |
| Majken | 5/10 | 6145 days | 2% |
| AurelieD | 7/10 | 6149 days | 2% |
| Nanno | 7/10 | 6152 days | 2% |
| MartinD | 7/10 | 6160 days | 2% |
| Danielle | 10/10 | 6166 days | 2% |
| Sonja | 8/10 | 6169 days | 2% |
| Maettu | 8/10 | 6192 days | 2% |
| Stephanie | 9/10 | 6202 days | 2% |
| Katherine | 7/10 | 6206 days | 2% |
| Claire | 7/10 | 6214 days | 2% |
| helen | 8/10 | 6214 days | 2% |
| Maggie | 9/10 | 6220 days | 2% |
| Patricia | 10/10 | 6223 days | 2% |
| Antonella | 9/10 | 6276 days | 2% |
| Gray | 5/10 | 6337 days | 2% |
| Thomas Bachmann | 8/10 | 6350 days | 2% |
| Leanne Priestley | 8/10 | 6473 days | 2% |
| Amy Clark | 7/10 | 6473 days | 2% |
| Toby | 9/10 | 6474 days | 2% |
| Vikki | 10/10 | 6478 days | 2% |
| Ovin | 9/10 | 6478 days | 2% |
| AlanN316 | 9/10 | 6483 days | 2% |
| Yayami Kimura | 9/10 | 6485 days | 2% |
| Demo | 6/10 | 6486 days | 2% |
| RhysP | 8/10 | 6487 days | 2% |
| Sarah Maudsley | 7/10 | 6488 days | 2% |
| Benjamin Krein | 8/10 | 6493 days | 2% |
| Tina Daly | 6/10 | 6494 days | 2% |
| Ohad | 9/10 | 6495 days | 2% |
| Kathy Hawey | 8/10 | 6501 days | 2% |
| David Buckley | 9/10 | 6502 days | 2% |
| Jackie Horwell | 10/10 | 6503 days | 2% |
| Carla | 7/10 | 6514 days | 2% |
| Hanna | 7/10 | 6515 days | 2% |
| Reina Lohaye | 7/10 | 6517 days | 2% |
| Line Oehlinschloger | 5/10 | 6541 days | 2% |
| Tim | 8/10 | 6542 days | 2% |
| Mette de Graap | 7/10 | 6544 days | 2% |
| Andrew Porter | 8/10 | 6550 days | 2% |
| Gerber Liselotte | 9/10 | 6576 days | 2% |
| Samuel Brejeon | 7/10 | 6587 days | 2% |
| Christin | 8/10 | 6592 days | 2% |
| Orla | 3/10 | 6592 days | 1% |
| Pat Brewster | 7/10 | 6703 days | 2% |
| Natalia | 8/10 | 6787 days | 2% |
| Miriam&Eva | 8/10 | 6791 days | 2% |
| Caroline | 8/10 | 6807 days | 2% |
| Klaus | 4/10 | 6808 days | 2% |
| Bonnie | 6/10 | 6811 days | 2% |
| Franklin | 7/10 | 6811 days | 2% |
| Stephanie | 8/10 | 6812 days | 2% |
| andrew julie | 7/10 | 6825 days | 2% |
| Nancy Bill | 7/10 | 6825 days | 2% |
| Daniel | 7/10 | 6827 days | 2% |
| clairekidd | 5/10 | 6830 days | 2% |
| Fred Highsmith | 8/10 | 6831 days | 2% |
| Hannah | 8/10 | 6841 days | 2% |
| Detlef | 5/10 | 6845 days | 2% |
| Delgroot | 8/10 | 6860 days | 2% |
| Herman&Ineke | 5/10 | 6871 days | 2% |
| Janne | 5/10 | 6872 days | 2% |
| Rolf | 9/10 | 6880 days | 2% |
| Nicole | 8/10 | 6880 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
-4.06% 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 | -4.00% |
| 198 | -4.02% |
| 199 | -4.04% |
| 200 | -4.06% |
| 201 | -4.08% |
| 202 | -4.10% |
| 203 | -4.12% |
| … | … |
Balancing Adjustment
9.49% 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.