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 Dive Tutukaka.

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

Dive Tutukaka

Valid Reviews

87 Valid Reviews

The Dive Tutukaka experience has a total of 88 reviews. There are 87 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 87 valid reviews:

Rating Count Percentage
10/10 39
45%
9/10 28
32%
8/10 15
17%
7/10 2
2%
6/10 1
1%
5/10 1
1%
4/10 0
0%
3/10 1
1%
2/10 0
0%
1/10 0
0%

90.80% Average

The raw data average (mean) for all the Dive Tutukaka valid reviews is 90.80% and is based on 87 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

72 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 87 valid reviews, the experience has 72 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 72 face-to-face reviews:

Rating Count Percentage
10/10 28
39%
9/10 26
36%
8/10 14
19%
7/10 1
1%
6/10 1
1%
5/10 1
1%
4/10 0
0%
3/10 1
1%
2/10 0
0%
1/10 0
0%

89.86% Average

The raw data average (mean) for all the Dive Tutukaka face-to-face reviews is 89.86% and is based on 72 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

90.77%

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
Barbara McNab 10/10 1301 days 100%
Cherie and Dan 10/10 1641 days 85%
Netta Tyler 10/10 1694 days 83%
Theerada Wongkaew 10/10 1735 days 81%
Gazmira Molina 8/10 1778 days 75%
Jessica Nasstrom 8/10 1785 days 75%
Adeline 8/10 1790 days 75%
Rebecca Pierce 10/10 1817 days 78%
Jane Simmons 10/10 1939 days 72%
Julia Clark 9/10 2006 days 69%
Kristina Breitwieser 10/10 2011 days 69%
Olivier Anciaux 7/10 2024 days 62%
Justine Hoffmann 9/10 2056 days 67%
Ruven Rintelmann 9/10 2061 days 67%
Niels Hoogendooen 8/10 2074 days 63%
Marie Brauherr 10/10 2082 days 66%
Luisa and Hannes 8/10 2086 days 63%
Christian Boudreau 9/10 2104 days 65%
Manuela Opprecht 7/10 2436 days 46%
Damaris Mayer 3/10 2436 days 39%
Sophie Huybrechts 10/10 2478 days 49%
Ally Cook 9/10 2482 days 49%
Jessie Sabine 9/10 2781 days 36%
Katrina Gamby 10/10 3139 days 20%
Sonia Sennane 10/10 3493 days 5%
Melanie Friessen 9/10 3494 days 5%
Barry Baily 10/10 3505 days 4%
Elisabeth 9/10 3514 days 4%
Lotte Foged 8/10 3519 days 3%
Anika 8/10 3520 days 3%
Paul 8/10 3590 days 0%
Elke & Charlotte 9/10 3603 days 0%
Kris Gijbels 9/10 3836 days 20%
Patrick Gloede 10/10 3841 days 20%
Norm and Sky 9/10 3846 days 20%
Roald and Ellen 9/10 3847 days 20%
B Kleven 10/10 3852 days 20%
Ann-Katrine & Sille 10/10 3856 days 20%
Erland Ostberg 8/10 3860 days 19%
Helene Descamps 9/10 3874 days 20%
Heather Deobald 9/10 3876 days 20%
Christina Fischer 6/10 3881 days 16%
Shoe 10/10 3948 days 20%
RobThexton 10/10 4101 days 20%
Martin 9/10 4162 days 20%
cpochin 10/10 4192 days 20%
John Casey 10/10 4204 days 20%
Peter Schmidt 10/10 4223 days 20%
Elisabeth Egerup 10/10 4230 days 20%
Vera Van Schie 10/10 4231 days 20%
Chris Glasg 10/10 4231 days 20%
Klass 9/10 4237 days 20%
Belinda Godhard 9/10 4248 days 20%
Theta 9/10 4251 days 20%
jamesg 9/10 4311 days 20%
Mille Winther 10/10 4324 days 20%
Christine Van Den Berg Michele Imbach 10/10 4336 days 20%
Eilahtan4 10/10 4374 days 20%
NZDiver 10/10 4435 days 20%
Nikki Turner 10/10 4478 days 20%
Christine Dadd 8/10 4545 days 19%
KatieR 10/10 4555 days 20%
Michael Maddams 9/10 4555 days 20%
Russ C 8/10 4557 days 19%
danam 10/10 4559 days 20%
Katy1 9/10 4559 days 20%
StefanieGermany 9/10 4575 days 20%
lannie 9/10 4591 days 20%
AbigailB 10/10 4602 days 20%
ReneeA 10/10 4605 days 20%
Ute 9/10 4609 days 20%
Annika 10/10 4622 days 20%
Salick 9/10 4622 days 20%
Thomas 8/10 4628 days 19%
Prentner 10/10 4638 days 20%
Evi 9/10 4663 days 20%
Limor 8/10 4663 days 19%
Christian 10/10 4773 days 20%
Lee Chapman 10/10 4873 days 20%
Jo and Tony 10/10 4949 days 20%
Lara Gema Conde 5/10 5049 days 16%
Trish 10/10 5286 days 20%
Fran 8/10 5287 days 19%
SueLinsk 10/10 5287 days 20%
Rosemary 9/10 5287 days 20%
Martin Christina 9/10 5293 days 20%
Meike 8/10 5320 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 Dive Tutukaka experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-3.07% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 73 days. However the Dive Tutukaka 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 Dive Tutukaka experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -3.03%
198 -3.04%
199 -3.06%
200 -3.07%
201 -3.09%
202 -3.10%
203 -3.12%

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.