Ranking Score Explained

Hi there, 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 Waitomo Adventures Ltd.

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.

Nick Morrison's avatar

Nick Morrison

Rankers owner

Waitomo Adventures Ltd

Valid Reviews

93 Valid Reviews

The Waitomo Adventures Ltd experience has a total of 94 reviews. There are 93 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 93 valid reviews:

Rating Count Percentage
10/10 32
34%
9/10 22
24%
8/10 23
25%
7/10 8
9%
6/10 5
5%
5/10 2
2%
4/10 0
0%
3/10 1
1%
2/10 0
0%
1/10 0
0%

86.13% Average

The raw data average (mean) for all the Waitomo Adventures Ltd valid reviews is 86.13% and is based on 93 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

77 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 93 valid reviews, the experience has 77 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 77 face-to-face reviews:

Rating Count Percentage
10/10 23
30%
9/10 20
26%
8/10 20
26%
7/10 8
10%
6/10 3
4%
5/10 2
3%
4/10 0
0%
3/10 1
1%
2/10 0
0%
1/10 0
0%

85.32% Average

The raw data average (mean) for all the Waitomo Adventures Ltd face-to-face reviews is 85.32% and is based on 77 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

88.45%

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
Dennis 10/10 1418 days 100%
Thomas Klinting 10/10 1472 days 98%
Franz Mesey 9/10 1487 days 97%
Judit Van lanen 10/10 1505 days 96%
Jack Robinson 8/10 1543 days 90%
Mikulas and Dominika 8/10 1565 days 89%
Elizabeth Braidotti 10/10 1615 days 91%
Craig Forsyth 10/10 1732 days 86%
Lea Behnem 10/10 1805 days 83%
Nicolas Justin 7/10 2149 days 61%
Stephanie Piou 8/10 2149 days 64%
Alex 9/10 2177 days 66%
Devan Sheppard 10/10 2246 days 63%
Nina Coopmans 7/10 2858 days 32%
Katherine 10/10 2882 days 34%
Lieven De Vlaminck 9/10 2888 days 34%
Andy 10/10 2979 days 30%
Ron 9/10 2983 days 30%
Bart Slingerland 9/10 3238 days 18%
Birds Tubbs 10/10 3239 days 18%
Malena 10/10 3254 days 18%
Schael 10/10 3258 days 17%
Ryan Pynappels 9/10 3265 days 17%
Tobias Forst 8/10 3346 days 13%
Sarah and Soren 9/10 3351 days 13%
Alberto Redner 10/10 3361 days 13%
Dozza 10/10 3406 days 11%
Sarah James 10/10 3588 days 3%
Nick Taylor 10/10 3588 days 3%
Laurent Pouvreau 10/10 3592 days 3%
Paap 8/10 3625 days 1%
Wouter Jansen 8/10 3625 days 1%
Luise Jaeger 3/10 3638 days 0%
Steff 9/10 3640 days 0%
wannaraft 10/10 3648 days 0%
elpo 6/10 3893 days 19%
kempt 8/10 3924 days 22%
Andy 8/10 3975 days 22%
Sam Bishop 10/10 3985 days 23%
Kay Beaumont 10/10 3987 days 23%
Johan 10/10 3995 days 23%
Jakob Pedersen 7/10 3995 days 21%
Jens van Evp 9/10 4009 days 23%
Max Van der Zalm 8/10 4009 days 22%
Carolina Gonzalez 8/10 4011 days 22%
Kasper 9/10 4011 days 23%
Chance McGuire 10/10 4013 days 23%
katesc 9/10 4064 days 23%
rosalindm 9/10 4069 days 23%
jennyb 9/10 4073 days 23%
Thomas Willi 10/10 4085 days 23%
Jess Pasos 10/10 4094 days 23%
Nikki Turner 8/10 4240 days 22%
Sejna 8/10 4261 days 22%
michellew 10/10 4267 days 23%
erikholland 8/10 4320 days 22%
mariea 9/10 4331 days 23%
Krapels 9/10 4344 days 23%
Halley 5/10 4350 days 18%
Katie 10/10 4368 days 23%
Ian S 8/10 4369 days 22%
Debbie 7/10 4370 days 21%
Daniel 8/10 4378 days 22%
Kristy825 10/10 4382 days 23%
Limor 6/10 4391 days 19%
Prentner 6/10 4400 days 19%
Sonja 9/10 4424 days 23%
Bronagh Mcartan 9/10 4568 days 23%
Tim 10/10 4592 days 23%
Brent Scanlan 10/10 4661 days 23%
Meike Biel 10/10 4669 days 23%
Hendrik 6/10 4711 days 19%
Sabrina 8/10 4711 days 22%
Peter Aston 5/10 4711 days 18%
helga 9/10 4713 days 23%
Janne 8/10 4723 days 22%
Melissa Steedman 9/10 4758 days 23%
gemma1 6/10 4763 days 19%
Francesco 8/10 4793 days 22%
Jim&Rachel 9/10 4876 days 23%
MarkReid 10/10 5009 days 23%
HalRoberts 8/10 5031 days 22%
David 9/10 5040 days 23%
Justin 8/10 5040 days 22%
Alex 8/10 5047 days 22%
Hilary 7/10 5056 days 21%
Roran 7/10 5066 days 21%
Nina 10/10 5091 days 23%
Inga 9/10 5091 days 23%
Italy 8/10 5091 days 22%
Nina 8/10 5091 days 22%
Helen 7/10 5091 days 21%
JuanPablo 7/10 5108 days 21%

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 Waitomo Adventures Ltd experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-4.13% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 48 days. However the Waitomo Adventures Ltd 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 Waitomo Adventures Ltd experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -4.07%
198 -4.09%
199 -4.11%
200 -4.13%
201 -4.15%
202 -4.17%
203 -4.19%

Final Ranking Score

84%

The final ranking score once adjustments and rounding has been applied. This value is cached and recalculated each day. Therefore it may not be precisely accurate based on the other values presented.

If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz.