Ranking Score Explained

Kia ora, 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.

Cymen Crick's avatar

Cymen Crick

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

91.18%

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 2538 days 100%
Cherie and Dan 10/10 2878 days 82%
Netta Tyler 10/10 2930 days 79%
Theerada Wongkaew 10/10 2972 days 76%
Gazmira Molina 8/10 3015 days 73%
Jessica Nasstrom 8/10 3022 days 72%
Adeline 8/10 3027 days 72%
Rebecca Pierce 10/10 3053 days 72%
Jane Simmons 10/10 3175 days 65%
Julia Clark 9/10 3243 days 61%
Kristina Breitwieser 10/10 3248 days 61%
Olivier Anciaux 7/10 3261 days 56%
Justine Hoffmann 9/10 3293 days 58%
Ruven Rintelmann 9/10 3298 days 58%
Niels Hoogendooen 8/10 3311 days 57%
Marie Brauherr 10/10 3319 days 58%
Luisa and Hannes 8/10 3323 days 56%
Christian Boudreau 9/10 3341 days 56%
Manuela Opprecht 7/10 3673 days 36%
Damaris Mayer 3/10 3673 days 21%
Sophie Huybrechts 10/10 3715 days 36%
Ally Cook 9/10 3719 days 35%
Jessie Sabine 9/10 4018 days 19%
Katrina Gamby 10/10 4376 days 0%
Sonia Sennane 10/10 4730 days 28%
Melanie Friessen 9/10 4731 days 27%
Barry Baily 10/10 4742 days 28%
Elisabeth 9/10 4751 days 27%
Lotte Foged 8/10 4756 days 27%
Anika 8/10 4757 days 27%
Paul 8/10 4827 days 27%
Elke & Charlotte 9/10 4840 days 27%
Kris Gijbels 9/10 5073 days 27%
Patrick Gloede 10/10 5078 days 28%
Norm and Sky 9/10 5083 days 27%
Roald and Ellen 9/10 5084 days 27%
B Kleven 10/10 5089 days 28%
Ann-Katrine & Sille 10/10 5093 days 28%
Erland Ostberg 8/10 5097 days 27%
Helene Descamps 9/10 5111 days 27%
Heather Deobald 9/10 5113 days 27%
Christina Fischer 6/10 5118 days 24%
Shoe 10/10 5185 days 28%
RobThexton 10/10 5338 days 28%
Martin 9/10 5399 days 27%
cpochin 10/10 5429 days 28%
John Casey 10/10 5441 days 28%
Peter Schmidt 10/10 5460 days 28%
Elisabeth Egerup 10/10 5467 days 28%
Vera Van Schie 10/10 5468 days 28%
Chris Glasg 10/10 5468 days 28%
Klass 9/10 5474 days 27%
Belinda Godhard 9/10 5485 days 27%
Theta 9/10 5488 days 27%
jamesg 9/10 5548 days 27%
Mille Winther 10/10 5561 days 28%
Christine Van Den Berg Michele Imbach 10/10 5573 days 28%
Eilahtan4 10/10 5611 days 28%
NZDiver 10/10 5672 days 28%
Nikki Turner 10/10 5715 days 28%
Christine Dadd 8/10 5782 days 27%
KatieR 10/10 5792 days 28%
Michael Maddams 9/10 5792 days 27%
Russ C 8/10 5794 days 27%
danam 10/10 5795 days 28%
Katy1 9/10 5796 days 27%
StefanieGermany 9/10 5811 days 27%
lannie 9/10 5827 days 27%
AbigailB 10/10 5839 days 28%
ReneeA 10/10 5842 days 28%
Ute 9/10 5846 days 27%
Annika 10/10 5858 days 28%
Salick 9/10 5858 days 27%
Thomas 8/10 5865 days 27%
Prentner 10/10 5874 days 28%
Evi 9/10 5899 days 27%
Limor 8/10 5900 days 27%
Christian 10/10 6010 days 28%
Lee Chapman 10/10 6110 days 28%
Jo and Tony 10/10 6186 days 28%
Lara Gema Conde 5/10 6286 days 21%
Trish 10/10 6523 days 28%
Fran 8/10 6524 days 27%
SueLinsk 10/10 6524 days 28%
Rosemary 9/10 6524 days 27%
Martin Christina 9/10 6530 days 27%
Meike 8/10 6557 days 27%

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

-4.15% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 51 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 -4.09%
198 -4.11%
199 -4.13%
200 -4.15%
201 -4.18%
202 -4.20%
203 -4.22%

Balancing Adjustment

1.45% Adjustment

Every experience's review score is adjusted to balance out the disproportional number of negative reviews that are contributed.

You won't be surprised to learn that disgruntled customers are more likely to leave a review than happy ones. They are motivated to share their experience and warn others. We consider this a good thing and it's why reading the reviews is important. However we've learned it can misrepresent the experience in a more overall sense.

We apply a balancing adjustment to counteract this effect and ensure the ranking score is a more fair representation of the experience. This adjustment is applied equally to all experiences.

Final Ranking Score

88%

The final ranking score once any adjustments, ratings, and rounding has been applied. This value is recalculated each day and a short rolling average is applied. Therefore it may not be precisely accurate based on the other values presented.