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

92.11%

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 1242 days true 4.71 100%
Thomas Klinting 10/10 1296 days true 4.61 98%
Franz Mesey 9/10 1310 days 4.58 97%
Judit Van lanen 10/10 1329 days true 4.54 96%
Jack Robinson 8/10 1367 days true 4.24 90%
Mikulas and Dominika 8/10 1389 days true 4.2 89%
Elizabeth Braidotti 10/10 1439 days 4.33 92%
Craig Forsyth 10/10 1555 days 4.1 87%
Lea Behnem 10/10 1629 days true 3.95 84%
Nicolas Justin 7/10 1973 days true 2.99 63%
Stephanie Piou 8/10 1973 days true 3.12 66%
Alex 9/10 2001 days true 3.23 68%
Devan Sheppard 10/10 2070 days true 3.09 66%
Nina Coopmans 7/10 2682 days true 1.72 37%
Katherine 10/10 2706 days true 1.85 39%
Lieven De Vlaminck 9/10 2712 days true 1.84 39%
Andy 10/10 2803 days 1.66 35%
Ron 9/10 2807 days true 1.65 35%
Bart Slingerland 9/10 3062 days true 1.15 24%
Birds Tubbs 10/10 3063 days true 1.15 24%
Malena 10/10 3078 days 1.12 24%
Schael 10/10 3082 days true 1.11 24%
Ryan Pynappels 9/10 3089 days true 1.1 23%
Tobias Forst 8/10 3170 days true 0.89 19%
Sarah and Soren 9/10 3175 days true 0.93 20%
Alberto Redner 10/10 3185 days true 0.91 19%
Dozza 10/10 3230 days 0.82 17%
Sarah James 10/10 3412 days true 0.47 10%
Nick Taylor 10/10 3412 days true 0.47 10%
Laurent Pouvreau 10/10 3416 days true 0.46 10%
Paap 8/10 3449 days true 0.37 8%
Wouter Jansen 8/10 3449 days true 0.37 8%
Luise Jaeger 3/10 3462 days true 0.28 6%
Steff 9/10 3464 days true 0.36 8%
wannaraft 10/10 3472 days 0.35 7%
elpo 6/10 3717 days 0.0 0%
kempt 8/10 3748 days 0.0 0%
Andy 8/10 3799 days true 0.0 0%
Sam Bishop 10/10 3809 days 0.0 0%
Kay Beaumont 10/10 3811 days true 0.0 0%
Johan 10/10 3819 days true 0.0 0%
Jakob Pedersen 7/10 3819 days true 0.0 0%
Jens van Evp 9/10 3833 days true 0.0 0%
Max Van der Zalm 8/10 3833 days true 0.0 0%
Carolina Gonzalez 8/10 3835 days true 0.0 0%
Kasper 9/10 3835 days true 0.0 0%
Chance McGuire 10/10 3837 days 0.0 0%
katesc 9/10 3888 days true 0.0 0%
rosalindm 9/10 3893 days true 0.0 0%
jennyb 9/10 3897 days true 0.0 0%
Thomas Willi 10/10 3909 days true 0.0 0%
Jess Pasos 10/10 3918 days true 0.0 0%
Nikki Turner 8/10 4064 days true 0.0 0%
Sejna 8/10 4085 days true 0.0 0%
michellew 10/10 4091 days true 0.0 0%
erikholland 8/10 4143 days 0.0 0%
mariea 9/10 4154 days true 0.0 0%
Krapels 9/10 4167 days true 0.0 0%
Halley 5/10 4173 days true 0.0 0%
Katie 10/10 4191 days true 0.0 0%
Ian S 8/10 4192 days true 0.0 0%
Debbie 7/10 4193 days true 0.0 0%
Daniel 8/10 4202 days true 0.0 0%
Kristy825 10/10 4205 days 0.0 0%
Limor 6/10 4214 days true 0.0 0%
Prentner 6/10 4223 days true 0.0 0%
Sonja 9/10 4247 days true 0.0 0%
Bronagh Mcartan 9/10 4391 days true 0.0 0%
Tim 10/10 4415 days true 0.0 0%
Brent Scanlan 10/10 4485 days true 0.0 0%
Meike Biel 10/10 4493 days true 0.0 0%
Hendrik 6/10 4535 days true 0.0 0%
Sabrina 8/10 4535 days true 0.0 0%
Peter Aston 5/10 4535 days true 0.0 0%
helga 9/10 4536 days 0.0 0%
Janne 8/10 4546 days 0.0 0%
Melissa Steedman 9/10 4582 days true 0.0 0%
gemma1 6/10 4586 days 0.0 0%
Francesco 8/10 4617 days true 0.0 0%
Jim&Rachel 9/10 4700 days true 0.0 0%
MarkReid 10/10 4833 days true 0.0 0%
HalRoberts 8/10 4855 days true 0.0 0%
David 9/10 4864 days true 0.0 0%
Justin 8/10 4864 days true 0.0 0%
Alex 8/10 4871 days true 0.0 0%
Hilary 7/10 4880 days true 0.0 0%
Roran 7/10 4890 days true 0.0 0%
Nina 10/10 4915 days true 0.0 0%
Inga 9/10 4915 days true 0.0 0%
Italy 8/10 4915 days true 0.0 0%
Nina 8/10 4915 days true 0.0 0%
Helen 7/10 4915 days true 0.0 0%
JuanPablo 7/10 4932 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

-2.15% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 121 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 -2.12%
198 -2.13%
199 -2.14%
200 -2.15%
201 -2.16%
202 -2.17%
203 -2.18%

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.