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.

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Cymen Crick's avatar

Cymen Crick

Rankers Owner

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

68.19%

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 4/10 500 days 100%
Eric 5/10 2941 days 4%
Martin Fersebner 7/10 2947 days 5%
Alonso 8/10 3003 days 5%
Andres Gonzalez 6/10 3021 days 4%
Eveline 8/10 3034 days 5%
Anna Gruenewald 5/10 3038 days 4%
Camilla Geert 6/10 3250 days 3%
Sabrina Schneider 8/10 3256 days 4%
Laura Cosquer 7/10 3258 days 4%
Frenziska Schmid 7/10 3271 days 4%
Johanna Kuch 7/10 3299 days 4%
Carmen Pramstaller 9/10 3301 days 4%
Liza Braun 8/10 3302 days 4%
Markus Wabing 8/10 3304 days 4%
Uschi Pongratz 8/10 3304 days 4%
Nita Oussoren 8/10 3304 days 4%
Jessica Ruhland 6/10 3304 days 3%
David Soukal 7/10 3305 days 3%
Sabine Bergen 7/10 3312 days 3%
Sophie NIemann 9/10 3317 days 4%
Josephine 7/10 3325 days 3%
Pierre and Alexandra 7/10 3357 days 3%
Selma Krap 9/10 3363 days 4%
Blandine Giusti 7/10 3625 days 2%
Polly Rider 8/10 3730 days 2%
Greg Gilmore 8/10 3963 days 1%
Fiona Hawkins 7/10 3963 days 1%
Pavel Macek 9/10 3972 days 1%
Anna Sternberg 5/10 4002 days 1%
Roy Matthieu 6/10 4012 days 1%
Julie Ledanois 7/10 4012 days 1%
Pierre Gentile 6/10 4012 days 1%
Cindy Benayoum 7/10 4012 days 1%
Olivia 8/10 4013 days 1%
Callum 7/10 4013 days 1%
Sophia 6/10 4018 days 1%
Andreas Zapke 8/10 4057 days 1%
Simone Pickert 7/10 4058 days 1%
Cindy Bonton 7/10 4068 days 1%
Menu 8/10 4356 days 0%
Christian 5/10 4359 days 0%
Nora 7/10 4359 days 0%
Michael Nolan 10/10 4366 days 0%
Sebastian 8/10 4370 days 0%
Tobi 9/10 4371 days 0%
Chantal Mortel 7/10 4371 days 0%
Alessa Ndra 10/10 4376 days 0%
Fabian Brand 5/10 4387 days 1%
Kyle Guffei 10/10 4389 days 2%
Henrik Steinruecken 8/10 4438 days 2%
Doan 6/10 4461 days 2%
Judy 10/10 4465 days 2%
Petra 7/10 4467 days 2%
Selwindt 9/10 4725 days 2%
Mats Harstedt 7/10 4740 days 2%
Mark Bogton 8/10 4740 days 2%
R E Webb 9/10 4743 days 2%
Roland Hofmann 7/10 4746 days 2%
Lepied 7/10 4747 days 2%
Carla Mathieu 10/10 4750 days 2%
Graham Swinyard 7/10 4754 days 2%
Kurt Furuskar 9/10 4771 days 2%
_mel_ 8/10 4791 days 2%
Theresa 9/10 4838 days 2%
Frans van der Kroon 8/10 4839 days 2%
Elke & Charlotte 8/10 4842 days 2%
Gary A 9/10 4852 days 2%
katel86 5/10 4913 days 1%
Dogoneit 4/10 5066 days 1%
Shoko Watanabe 8/10 5066 days 2%
Markus 8/10 5069 days 2%
Binder 8/10 5081 days 2%
Nicola Thackray 7/10 5084 days 2%
Katy Bourne 8/10 5091 days 2%
Michael Assfalg 8/10 5096 days 2%
Jon_and_Family 9/10 5097 days 2%
M Holierhoek 7/10 5099 days 2%
Berger 9/10 5101 days 2%
Ron Pantzer 7/10 5106 days 2%
Julian Seizinger 9/10 5112 days 2%
Olivia Carvill 8/10 5113 days 2%
Jarob Brezigar 5/10 5118 days 1%
Markus Richert 6/10 5119 days 2%
Christina Fischer 5/10 5120 days 1%
Bruce & Bonnie Childs 9/10 5124 days 2%
hendrik king 9/10 5156 days 2%
craigy 6/10 5309 days 2%
Monica Askew 9/10 5379 days 2%
Adam Gerrard 8/10 5392 days 2%
Sophie & Joffrey 7/10 5396 days 2%
steveE 7/10 5401 days 2%
Alan & Lorna 8/10 5455 days 2%
Mr and Mrs Scott 5/10 5462 days 1%
B Willmore 10/10 5464 days 2%
Pete H 10/10 5471 days 2%
Johan Wisselo 7/10 5482 days 2%
Tanja Titze 10/10 5483 days 2%
Groen 8/10 5487 days 2%
Kasper 5/10 5488 days 1%
Laura Walters 8/10 5489 days 2%
Ines Diana 8/10 5489 days 2%
uleugel 8/10 5499 days 2%
deanlaw 9/10 5535 days 2%
menzel 8/10 5535 days 2%
blokzyl 7/10 5541 days 2%
braunweiler 9/10 5541 days 2%
Marshall 9/10 5554 days 2%
Karin Linder 9/10 5556 days 2%
Lisette X 7/10 5560 days 2%
Louis Duhaime 8/10 5563 days 2%
paulandcathy 8/10 5607 days 2%
clairet 7/10 5661 days 2%
johannac 7/10 5671 days 2%
Miranda 8/10 5674 days 2%
Charles Lyne 10/10 5766 days 2%
Andrew Lonsdale 5/10 5784 days 1%
RubyJ 8/10 5788 days 2%
arthurwa 10/10 5796 days 2%
Peter Jackie 7/10 5799 days 2%
FiensG 8/10 5815 days 2%
Erik 7/10 5819 days 2%
Grimm 9/10 5820 days 2%
Marlena 10/10 5820 days 2%
Nick 9/10 5825 days 2%
RichardE 9/10 5831 days 2%
Sarah 7/10 5833 days 2%
Manfred 9/10 5833 days 2%
Majken 5/10 5840 days 1%
AurelieD 7/10 5843 days 2%
Nanno 7/10 5847 days 2%
MartinD 7/10 5854 days 2%
Danielle 10/10 5861 days 2%
Sonja 8/10 5863 days 2%
Maettu 8/10 5886 days 2%
Stephanie 9/10 5896 days 2%
Katherine 7/10 5901 days 2%
Claire 7/10 5909 days 2%
helen 8/10 5909 days 2%
Maggie 9/10 5915 days 2%
Patricia 10/10 5918 days 2%
Antonella 9/10 5971 days 2%
Gray 5/10 6032 days 1%
Thomas Bachmann 8/10 6045 days 2%
Leanne Priestley 8/10 6167 days 2%
Amy Clark 7/10 6167 days 2%
Toby 9/10 6168 days 2%
Vikki 10/10 6172 days 2%
Ovin 9/10 6172 days 2%
AlanN316 9/10 6177 days 2%
Yayami Kimura 9/10 6179 days 2%
Demo 6/10 6180 days 2%
RhysP 8/10 6181 days 2%
Sarah Maudsley 7/10 6182 days 2%
Benjamin Krein 8/10 6187 days 2%
Tina Daly 6/10 6188 days 2%
Ohad 9/10 6189 days 2%
Kathy Hawey 8/10 6195 days 2%
David Buckley 9/10 6196 days 2%
Jackie Horwell 10/10 6197 days 2%
Carla 7/10 6208 days 2%
Hanna 7/10 6209 days 2%
Reina Lohaye 7/10 6211 days 2%
Line Oehlinschloger 5/10 6235 days 1%
Tim 8/10 6236 days 2%
Mette de Graap 7/10 6238 days 2%
Andrew Porter 8/10 6244 days 2%
Gerber Liselotte 9/10 6270 days 2%
Samuel Brejeon 7/10 6281 days 2%
Christin 8/10 6286 days 2%
Orla 3/10 6286 days 1%
Pat Brewster 7/10 6398 days 2%
Natalia 8/10 6482 days 2%
Miriam&Eva 8/10 6486 days 2%
Caroline 8/10 6502 days 2%
Klaus 4/10 6503 days 1%
Bonnie 6/10 6506 days 2%
Franklin 7/10 6506 days 2%
Stephanie 8/10 6507 days 2%
andrew julie 7/10 6520 days 2%
Nancy Bill 7/10 6520 days 2%
Daniel 7/10 6522 days 2%
clairekidd 5/10 6525 days 1%
Fred Highsmith 8/10 6526 days 2%
Hannah 8/10 6536 days 2%
Detlef 5/10 6540 days 1%
Delgroot 8/10 6554 days 2%
Herman&Ineke 5/10 6565 days 1%
Janne 5/10 6566 days 1%
Rolf 9/10 6574 days 2%
Nicole 8/10 6574 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

-4.15% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 52 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 -4.09%
198 -4.11%
199 -4.13%
200 -4.15%
201 -4.18%
202 -4.20%
203 -4.22%

Balancing Adjustment

10.91% 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.