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

91.83%

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 10/10 350 days 100%
Thomas Klinting 10/10 404 days 92%
Franz Mesey 9/10 419 days 74%
Judit Van lanen 10/10 437 days 86%
Jack Robinson 8/10 475 days 79%
Mikulas and Dominika 8/10 497 days 75%
Elizabeth Braidotti 10/10 547 days 54%
Craig Forsyth 10/10 664 days 35%
Lea Behnem 10/10 737 days 31%
Nicolas Justin 7/10 1081 days 5%
Stephanie Piou 8/10 1081 days 5%
Alex 9/10 1109 days 5%
Devan Sheppard 10/10 1178 days 5%
Nina Coopmans 7/10 1790 days 4%
Katherine 10/10 1814 days 4%
Lieven De Vlaminck 9/10 1820 days 4%
Andy 10/10 1911 days 3%
Ron 9/10 1915 days 4%
Bart Slingerland 9/10 2170 days 3%
Birds Tubbs 10/10 2171 days 3%
Malena 10/10 2186 days 2%
Schael 10/10 2190 days 3%
Ryan Pynappels 9/10 2197 days 3%
Tobias Forst 8/10 2278 days 3%
Sarah and Soren 9/10 2283 days 3%
Alberto Redner 10/10 2293 days 3%
Dozza 10/10 2338 days 2%
Sarah James 10/10 2520 days 3%
Nick Taylor 10/10 2520 days 3%
Laurent Pouvreau 10/10 2524 days 3%
Paap 8/10 2557 days 3%
Wouter Jansen 8/10 2557 days 3%
Luise Jaeger 3/10 2570 days 2%
Steff 9/10 2572 days 3%
wannaraft 10/10 2580 days 2%
elpo 6/10 2825 days 2%
kempt 8/10 2856 days 1%
Andy 8/10 2907 days 2%
Sam Bishop 10/10 2917 days 1%
Kay Beaumont 10/10 2919 days 2%
Johan 10/10 2927 days 2%
Jakob Pedersen 7/10 2927 days 2%
Jens van Evp 9/10 2941 days 2%
Max Van der Zalm 8/10 2941 days 2%
Carolina Gonzalez 8/10 2943 days 2%
Kasper 9/10 2943 days 2%
Chance McGuire 10/10 2945 days 1%
katesc 9/10 2996 days 2%
rosalindm 9/10 3001 days 2%
jennyb 9/10 3005 days 2%
Thomas Willi 10/10 3017 days 2%
Jess Pasos 10/10 3026 days 2%
Nikki Turner 8/10 3172 days 1%
Sejna 8/10 3193 days 1%
michellew 10/10 3199 days 1%
erikholland 8/10 3252 days 1%
mariea 9/10 3263 days 1%
Krapels 9/10 3275 days 1%
Halley 5/10 3281 days 1%
Katie 10/10 3299 days 1%
Ian S 8/10 3300 days 1%
Debbie 7/10 3301 days 1%
Daniel 8/10 3310 days 1%
Kristy825 10/10 3314 days 1%
Limor 6/10 3322 days 1%
Prentner 6/10 3331 days 1%
Sonja 9/10 3356 days 1%
Bronagh Mcartan 9/10 3499 days 1%
Tim 10/10 3523 days 1%
Brent Scanlan 10/10 3593 days 1%
Meike Biel 10/10 3601 days 1%
Hendrik 6/10 3643 days 1%
Sabrina 8/10 3643 days 1%
Peter Aston 5/10 3643 days 1%
helga 9/10 3644 days 0%
Janne 8/10 3654 days 0%
Melissa Steedman 9/10 3690 days 1%
gemma1 6/10 3695 days 0%
Francesco 8/10 3725 days 1%
Jim&Rachel 9/10 3808 days 0%
MarkReid 10/10 3941 days 0%
HalRoberts 8/10 3963 days 0%
David 9/10 3972 days 0%
Justin 8/10 3972 days 0%
Alex 8/10 3979 days 0%
Hilary 7/10 3988 days 0%
Roran 7/10 3998 days 0%
Nina 10/10 4023 days 0%
Inga 9/10 4023 days 0%
Italy 8/10 4023 days 0%
Nina 8/10 4023 days 0%
Helen 7/10 4023 days 0%
JuanPablo 7/10 4040 days 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

-1.88% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 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 364 days.

The Waitomo Adventures Ltd experience has been adjusted for 94 days. Adjustments are according to the following table.

Days Adjustment
91 -1.82%
92 -1.84%
93 -1.86%
94 -1.88%
95 -1.90%
96 -1.92%
97 -1.94%

Final Ranking Score

90%

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.