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

88.05%

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 1567 days 100%
Thomas Klinting 10/10 1621 days 97%
Franz Mesey 9/10 1636 days 97%
Judit Van lanen 10/10 1654 days 96%
Jack Robinson 8/10 1692 days 89%
Mikulas and Dominika 8/10 1714 days 88%
Elizabeth Braidotti 10/10 1764 days 90%
Craig Forsyth 10/10 1881 days 84%
Lea Behnem 10/10 1954 days 81%
Nicolas Justin 7/10 2298 days 57%
Stephanie Piou 8/10 2298 days 60%
Alex 9/10 2326 days 62%
Devan Sheppard 10/10 2395 days 58%
Nina Coopmans 7/10 3007 days 25%
Katherine 10/10 3031 days 26%
Lieven De Vlaminck 9/10 3037 days 26%
Andy 10/10 3128 days 21%
Ron 9/10 3132 days 21%
Bart Slingerland 9/10 3387 days 8%
Birds Tubbs 10/10 3388 days 8%
Malena 10/10 3403 days 8%
Schael 10/10 3407 days 7%
Ryan Pynappels 9/10 3414 days 7%
Tobias Forst 8/10 3495 days 3%
Sarah and Soren 9/10 3500 days 3%
Alberto Redner 10/10 3510 days 2%
Dozza 10/10 3555 days 0%
Sarah James 10/10 3737 days 21%
Nick Taylor 10/10 3737 days 21%
Laurent Pouvreau 10/10 3741 days 21%
Paap 8/10 3774 days 20%
Wouter Jansen 8/10 3774 days 20%
Luise Jaeger 3/10 3787 days 15%
Steff 9/10 3789 days 21%
wannaraft 10/10 3797 days 21%
elpo 6/10 4042 days 17%
kempt 8/10 4073 days 20%
Andy 8/10 4124 days 20%
Sam Bishop 10/10 4134 days 21%
Kay Beaumont 10/10 4136 days 21%
Johan 10/10 4144 days 21%
Jakob Pedersen 7/10 4144 days 19%
Jens van Evp 9/10 4158 days 21%
Max Van der Zalm 8/10 4158 days 20%
Carolina Gonzalez 8/10 4160 days 20%
Kasper 9/10 4160 days 21%
Chance McGuire 10/10 4162 days 21%
katesc 9/10 4213 days 21%
rosalindm 9/10 4218 days 21%
jennyb 9/10 4222 days 21%
Thomas Willi 10/10 4234 days 21%
Jess Pasos 10/10 4243 days 21%
Nikki Turner 8/10 4389 days 20%
Sejna 8/10 4410 days 20%
michellew 10/10 4416 days 21%
erikholland 8/10 4469 days 20%
mariea 9/10 4480 days 21%
Krapels 9/10 4493 days 21%
Halley 5/10 4499 days 16%
Katie 10/10 4517 days 21%
Ian S 8/10 4518 days 20%
Debbie 7/10 4519 days 19%
Daniel 8/10 4527 days 20%
Kristy825 10/10 4531 days 21%
Limor 6/10 4540 days 17%
Prentner 6/10 4549 days 17%
Sonja 9/10 4573 days 21%
Bronagh Mcartan 9/10 4717 days 21%
Tim 10/10 4741 days 21%
Brent Scanlan 10/10 4810 days 21%
Meike Biel 10/10 4818 days 21%
Hendrik 6/10 4860 days 17%
Sabrina 8/10 4860 days 20%
Peter Aston 5/10 4860 days 16%
helga 9/10 4862 days 21%
Janne 8/10 4872 days 20%
Melissa Steedman 9/10 4907 days 21%
gemma1 6/10 4912 days 17%
Francesco 8/10 4942 days 20%
Jim&Rachel 9/10 5025 days 21%
MarkReid 10/10 5158 days 21%
HalRoberts 8/10 5180 days 20%
David 9/10 5189 days 21%
Justin 8/10 5189 days 20%
Alex 8/10 5196 days 20%
Hilary 7/10 5205 days 19%
Roran 7/10 5215 days 19%
Nina 10/10 5240 days 21%
Inga 9/10 5240 days 21%
Italy 8/10 5240 days 20%
Nina 8/10 5240 days 20%
Helen 7/10 5240 days 19%
JuanPablo 7/10 5257 days 19%

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

-2.10% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 120 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 -2.06%
198 -2.07%
199 -2.09%
200 -2.10%
201 -2.11%
202 -2.12%
203 -2.13%

Final Ranking Score

86%

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.