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

92.22%

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 Face-to-Face Weight Relative Weight
Dennis 10/10 1357 days true 4.49 100%
Thomas Klinting 10/10 1411 days true 4.38 98%
Franz Mesey 9/10 1425 days 4.35 97%
Judit Van lanen 10/10 1444 days true 4.32 96%
Jack Robinson 8/10 1482 days true 4.03 90%
Mikulas and Dominika 8/10 1504 days true 3.99 89%
Elizabeth Braidotti 10/10 1554 days 4.1 91%
Craig Forsyth 10/10 1670 days 3.87 86%
Lea Behnem 10/10 1744 days true 3.73 83%
Nicolas Justin 7/10 2088 days true 2.78 62%
Stephanie Piou 8/10 2088 days true 2.9 65%
Alex 9/10 2116 days true 3.0 67%
Devan Sheppard 10/10 2185 days true 2.87 64%
Nina Coopmans 7/10 2797 days true 1.52 34%
Katherine 10/10 2821 days true 1.62 36%
Lieven De Vlaminck 9/10 2827 days true 1.61 36%
Andy 10/10 2918 days 1.43 32%
Ron 9/10 2922 days true 1.42 32%
Bart Slingerland 9/10 3177 days true 0.93 21%
Birds Tubbs 10/10 3178 days true 0.92 21%
Malena 10/10 3193 days 0.89 20%
Schael 10/10 3197 days true 0.89 20%
Ryan Pynappels 9/10 3204 days true 0.87 19%
Tobias Forst 8/10 3285 days true 0.68 15%
Sarah and Soren 9/10 3290 days true 0.7 16%
Alberto Redner 10/10 3300 days true 0.68 15%
Dozza 10/10 3345 days 0.6 13%
Sarah James 10/10 3527 days true 0.24 5%
Nick Taylor 10/10 3527 days true 0.24 5%
Laurent Pouvreau 10/10 3531 days true 0.23 5%
Paap 8/10 3564 days true 0.16 4%
Wouter Jansen 8/10 3564 days true 0.16 4%
Luise Jaeger 3/10 3577 days true 0.11 2%
Steff 9/10 3579 days true 0.14 3%
wannaraft 10/10 3587 days 0.12 3%
elpo 6/10 3832 days 0.0 0%
kempt 8/10 3863 days 0.0 0%
Andy 8/10 3914 days true 0.0 0%
Sam Bishop 10/10 3924 days 0.0 0%
Kay Beaumont 10/10 3926 days true 0.0 0%
Johan 10/10 3934 days true 0.0 0%
Jakob Pedersen 7/10 3934 days true 0.0 0%
Jens van Evp 9/10 3948 days true 0.0 0%
Max Van der Zalm 8/10 3948 days true 0.0 0%
Carolina Gonzalez 8/10 3950 days true 0.0 0%
Kasper 9/10 3950 days true 0.0 0%
Chance McGuire 10/10 3952 days 0.0 0%
katesc 9/10 4003 days true 0.0 0%
rosalindm 9/10 4008 days true 0.0 0%
jennyb 9/10 4012 days true 0.0 0%
Thomas Willi 10/10 4024 days true 0.0 0%
Jess Pasos 10/10 4033 days true 0.0 0%
Nikki Turner 8/10 4179 days true 0.0 0%
Sejna 8/10 4200 days true 0.0 0%
michellew 10/10 4206 days true 0.0 0%
erikholland 8/10 4259 days 0.0 0%
mariea 9/10 4270 days true 0.0 0%
Krapels 9/10 4282 days true 0.0 0%
Halley 5/10 4288 days true 0.0 0%
Katie 10/10 4306 days true 0.0 0%
Ian S 8/10 4307 days true 0.0 0%
Debbie 7/10 4308 days true 0.0 0%
Daniel 8/10 4317 days true 0.0 0%
Kristy825 10/10 4321 days 0.0 0%
Limor 6/10 4329 days true 0.0 0%
Prentner 6/10 4338 days true 0.0 0%
Sonja 9/10 4363 days true 0.0 0%
Bronagh Mcartan 9/10 4506 days true 0.0 0%
Tim 10/10 4530 days true 0.0 0%
Brent Scanlan 10/10 4600 days true 0.0 0%
Meike Biel 10/10 4608 days true 0.0 0%
Hendrik 6/10 4650 days true 0.0 0%
Sabrina 8/10 4650 days true 0.0 0%
Peter Aston 5/10 4650 days true 0.0 0%
helga 9/10 4651 days 0.0 0%
Janne 8/10 4661 days 0.0 0%
Melissa Steedman 9/10 4697 days true 0.0 0%
gemma1 6/10 4702 days 0.0 0%
Francesco 8/10 4732 days true 0.0 0%
Jim&Rachel 9/10 4815 days true 0.0 0%
MarkReid 10/10 4948 days true 0.0 0%
HalRoberts 8/10 4970 days true 0.0 0%
David 9/10 4979 days true 0.0 0%
Justin 8/10 4979 days true 0.0 0%
Alex 8/10 4986 days true 0.0 0%
Hilary 7/10 4995 days true 0.0 0%
Roran 7/10 5005 days true 0.0 0%
Nina 10/10 5030 days true 0.0 0%
Inga 9/10 5030 days true 0.0 0%
Italy 8/10 5030 days true 0.0 0%
Nina 8/10 5030 days true 0.0 0%
Helen 7/10 5030 days true 0.0 0%
JuanPablo 7/10 5047 days true 0.0 0%

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

-4.07% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 43 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 -4.01%
198 -4.03%
199 -4.05%
200 -4.07%
201 -4.09%
202 -4.11%
203 -4.13%

Final Ranking Score

88%

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.