Ranking Score Explained

G'day 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.

Cymen Crick's avatar

Cymen Crick

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

87.92%

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 1976 days 100%
Thomas Klinting 10/10 2030 days 97%
Franz Mesey 9/10 2045 days 96%
Judit Van lanen 10/10 2063 days 94%
Jack Robinson 8/10 2101 days 87%
Mikulas and Dominika 8/10 2123 days 86%
Elizabeth Braidotti 10/10 2173 days 87%
Craig Forsyth 10/10 2290 days 80%
Lea Behnem 10/10 2363 days 75%
Nicolas Justin 7/10 2707 days 48%
Stephanie Piou 8/10 2707 days 50%
Alex 9/10 2735 days 52%
Devan Sheppard 10/10 2804 days 47%
Nina Coopmans 7/10 3416 days 7%
Katherine 10/10 3440 days 6%
Lieven De Vlaminck 9/10 3446 days 6%
Andy 10/10 3537 days 0%
Ron 9/10 3541 days 0%
Bart Slingerland 9/10 3796 days 26%
Birds Tubbs 10/10 3797 days 26%
Malena 10/10 3812 days 26%
Schael 10/10 3816 days 26%
Ryan Pynappels 9/10 3823 days 26%
Tobias Forst 8/10 3904 days 24%
Sarah and Soren 9/10 3909 days 26%
Alberto Redner 10/10 3919 days 26%
Dozza 10/10 3964 days 26%
Sarah James 10/10 4146 days 26%
Nick Taylor 10/10 4146 days 26%
Laurent Pouvreau 10/10 4150 days 26%
Paap 8/10 4183 days 24%
Wouter Jansen 8/10 4183 days 24%
Luise Jaeger 3/10 4196 days 18%
Steff 9/10 4198 days 26%
wannaraft 10/10 4206 days 26%
elpo 6/10 4451 days 20%
kempt 8/10 4482 days 24%
Andy 8/10 4533 days 24%
Sam Bishop 10/10 4543 days 26%
Kay Beaumont 10/10 4545 days 26%
Johan 10/10 4553 days 26%
Jakob Pedersen 7/10 4553 days 23%
Jens van Evp 9/10 4567 days 26%
Max Van der Zalm 8/10 4567 days 24%
Carolina Gonzalez 8/10 4569 days 24%
Kasper 9/10 4569 days 26%
Chance McGuire 10/10 4571 days 26%
katesc 9/10 4622 days 26%
rosalindm 9/10 4627 days 26%
jennyb 9/10 4631 days 26%
Thomas Willi 10/10 4643 days 26%
Jess Pasos 10/10 4652 days 26%
Nikki Turner 8/10 4798 days 24%
Sejna 8/10 4819 days 24%
michellew 10/10 4825 days 26%
erikholland 8/10 4878 days 24%
mariea 9/10 4889 days 26%
Krapels 9/10 4901 days 26%
Halley 5/10 4907 days 19%
Katie 10/10 4925 days 26%
Ian S 8/10 4926 days 24%
Debbie 7/10 4927 days 23%
Daniel 8/10 4936 days 24%
Kristy825 10/10 4940 days 26%
Limor 6/10 4948 days 20%
Prentner 6/10 4957 days 20%
Sonja 9/10 4982 days 26%
Bronagh Mcartan 9/10 5125 days 26%
Tim 10/10 5149 days 26%
Brent Scanlan 10/10 5219 days 26%
Meike Biel 10/10 5227 days 26%
Hendrik 6/10 5269 days 20%
Sabrina 8/10 5269 days 24%
Peter Aston 5/10 5269 days 19%
helga 9/10 5270 days 26%
Janne 8/10 5280 days 24%
Melissa Steedman 9/10 5316 days 26%
gemma1 6/10 5321 days 20%
Francesco 8/10 5351 days 24%
Jim&Rachel 9/10 5434 days 26%
MarkReid 10/10 5567 days 26%
HalRoberts 8/10 5589 days 24%
David 9/10 5598 days 26%
Justin 8/10 5598 days 24%
Alex 8/10 5605 days 24%
Hilary 7/10 5614 days 23%
Roran 7/10 5624 days 23%
Nina 10/10 5649 days 26%
Inga 9/10 5649 days 26%
Italy 8/10 5649 days 24%
Nina 8/10 5649 days 24%
Helen 7/10 5649 days 23%
JuanPablo 7/10 5666 days 23%

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

-2.19% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 119 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 -2.16%
198 -2.17%
199 -2.18%
200 -2.19%
201 -2.20%
202 -2.21%
203 -2.22%

Final Ranking Score

86%

The final ranking score once any adjustments, ratings, 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.