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

87.96%

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 1662 days 100%
Thomas Klinting 10/10 1716 days 97%
Franz Mesey 9/10 1730 days 97%
Judit Van lanen 10/10 1749 days 96%
Jack Robinson 8/10 1787 days 89%
Mikulas and Dominika 8/10 1809 days 88%
Elizabeth Braidotti 10/10 1859 days 90%
Craig Forsyth 10/10 1975 days 84%
Lea Behnem 10/10 2049 days 80%
Nicolas Justin 7/10 2393 days 57%
Stephanie Piou 8/10 2393 days 59%
Alex 9/10 2421 days 61%
Devan Sheppard 10/10 2490 days 57%
Nina Coopmans 7/10 3102 days 23%
Katherine 10/10 3126 days 25%
Lieven De Vlaminck 9/10 3132 days 24%
Andy 10/10 3223 days 20%
Ron 9/10 3227 days 19%
Bart Slingerland 9/10 3482 days 6%
Birds Tubbs 10/10 3483 days 6%
Malena 10/10 3498 days 6%
Schael 10/10 3502 days 5%
Ryan Pynappels 9/10 3509 days 5%
Tobias Forst 8/10 3590 days 1%
Sarah and Soren 9/10 3595 days 1%
Alberto Redner 10/10 3605 days 0%
Dozza 10/10 3650 days 24%
Sarah James 10/10 3832 days 24%
Nick Taylor 10/10 3832 days 24%
Laurent Pouvreau 10/10 3836 days 24%
Paap 8/10 3869 days 23%
Wouter Jansen 8/10 3869 days 23%
Luise Jaeger 3/10 3882 days 18%
Steff 9/10 3884 days 24%
wannaraft 10/10 3892 days 24%
elpo 6/10 4137 days 20%
kempt 8/10 4168 days 23%
Andy 8/10 4219 days 23%
Sam Bishop 10/10 4229 days 24%
Kay Beaumont 10/10 4231 days 24%
Johan 10/10 4239 days 24%
Jakob Pedersen 7/10 4239 days 22%
Jens van Evp 9/10 4253 days 24%
Max Van der Zalm 8/10 4253 days 23%
Carolina Gonzalez 8/10 4255 days 23%
Kasper 9/10 4255 days 24%
Chance McGuire 10/10 4257 days 24%
katesc 9/10 4308 days 24%
rosalindm 9/10 4313 days 24%
jennyb 9/10 4317 days 24%
Thomas Willi 10/10 4329 days 24%
Jess Pasos 10/10 4338 days 24%
Nikki Turner 8/10 4484 days 23%
Sejna 8/10 4505 days 23%
michellew 10/10 4511 days 24%
erikholland 8/10 4563 days 23%
mariea 9/10 4574 days 24%
Krapels 9/10 4587 days 24%
Halley 5/10 4593 days 19%
Katie 10/10 4611 days 24%
Ian S 8/10 4612 days 23%
Debbie 7/10 4613 days 22%
Daniel 8/10 4622 days 23%
Kristy825 10/10 4625 days 24%
Limor 6/10 4634 days 20%
Prentner 6/10 4643 days 20%
Sonja 9/10 4667 days 24%
Bronagh Mcartan 9/10 4811 days 24%
Tim 10/10 4835 days 24%
Brent Scanlan 10/10 4905 days 24%
Meike Biel 10/10 4913 days 24%
Hendrik 6/10 4955 days 20%
Sabrina 8/10 4955 days 23%
Peter Aston 5/10 4955 days 19%
helga 9/10 4956 days 24%
Janne 8/10 4966 days 23%
Melissa Steedman 9/10 5002 days 24%
gemma1 6/10 5007 days 20%
Francesco 8/10 5037 days 23%
Jim&Rachel 9/10 5120 days 24%
MarkReid 10/10 5253 days 24%
HalRoberts 8/10 5275 days 23%
David 9/10 5284 days 24%
Justin 8/10 5284 days 23%
Alex 8/10 5291 days 23%
Hilary 7/10 5300 days 22%
Roran 7/10 5310 days 22%
Nina 10/10 5335 days 24%
Inga 9/10 5335 days 24%
Italy 8/10 5335 days 23%
Nina 8/10 5335 days 23%
Helen 7/10 5335 days 22%
JuanPablo 7/10 5352 days 22%

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

-3.21% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 69 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 -3.16%
198 -3.17%
199 -3.19%
200 -3.21%
201 -3.22%
202 -3.24%
203 -3.26%

Final Ranking Score

85%

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.