Ranking Score Explained

Hey, 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

91.12%

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 2454 days 100%
Cherie and Dan 10/10 2794 days 82%
Netta Tyler 10/10 2847 days 79%
Theerada Wongkaew 10/10 2888 days 76%
Gazmira Molina 8/10 2931 days 72%
Jessica Nasstrom 8/10 2938 days 72%
Adeline 8/10 2943 days 72%
Rebecca Pierce 10/10 2970 days 72%
Jane Simmons 10/10 3092 days 65%
Julia Clark 9/10 3159 days 61%
Kristina Breitwieser 10/10 3164 days 61%
Olivier Anciaux 7/10 3177 days 56%
Justine Hoffmann 9/10 3209 days 58%
Ruven Rintelmann 9/10 3214 days 58%
Niels Hoogendooen 8/10 3227 days 57%
Marie Brauherr 10/10 3235 days 58%
Luisa and Hannes 8/10 3239 days 56%
Christian Boudreau 9/10 3257 days 56%
Manuela Opprecht 7/10 3589 days 35%
Damaris Mayer 3/10 3589 days 19%
Sophie Huybrechts 10/10 3631 days 36%
Ally Cook 9/10 3635 days 35%
Jessie Sabine 9/10 3934 days 19%
Katrina Gamby 10/10 4292 days 0%
Sonia Sennane 10/10 4646 days 23%
Melanie Friessen 9/10 4647 days 23%
Barry Baily 10/10 4658 days 23%
Elisabeth 9/10 4667 days 23%
Lotte Foged 8/10 4672 days 22%
Anika 8/10 4673 days 22%
Paul 8/10 4743 days 22%
Elke & Charlotte 9/10 4756 days 23%
Kris Gijbels 9/10 4989 days 23%
Patrick Gloede 10/10 4994 days 23%
Norm and Sky 9/10 4999 days 23%
Roald and Ellen 9/10 5000 days 23%
B Kleven 10/10 5005 days 23%
Ann-Katrine & Sille 10/10 5009 days 23%
Erland Ostberg 8/10 5013 days 22%
Helene Descamps 9/10 5027 days 23%
Heather Deobald 9/10 5029 days 23%
Christina Fischer 6/10 5034 days 19%
Shoe 10/10 5101 days 23%
RobThexton 10/10 5254 days 23%
Martin 9/10 5315 days 23%
cpochin 10/10 5345 days 23%
John Casey 10/10 5357 days 23%
Peter Schmidt 10/10 5376 days 23%
Elisabeth Egerup 10/10 5383 days 23%
Vera Van Schie 10/10 5384 days 23%
Chris Glasg 10/10 5384 days 23%
Klass 9/10 5390 days 23%
Belinda Godhard 9/10 5401 days 23%
Theta 9/10 5404 days 23%
jamesg 9/10 5464 days 23%
Mille Winther 10/10 5477 days 23%
Christine Van Den Berg Michele Imbach 10/10 5489 days 23%
Eilahtan4 10/10 5527 days 23%
NZDiver 10/10 5588 days 23%
Nikki Turner 10/10 5631 days 23%
Christine Dadd 8/10 5698 days 22%
KatieR 10/10 5708 days 23%
Michael Maddams 9/10 5708 days 23%
Russ C 8/10 5710 days 22%
danam 10/10 5712 days 23%
Katy1 9/10 5712 days 23%
StefanieGermany 9/10 5728 days 23%
lannie 9/10 5744 days 23%
AbigailB 10/10 5755 days 23%
ReneeA 10/10 5758 days 23%
Ute 9/10 5762 days 23%
Annika 10/10 5775 days 23%
Salick 9/10 5775 days 23%
Thomas 8/10 5781 days 22%
Prentner 10/10 5791 days 23%
Evi 9/10 5816 days 23%
Limor 8/10 5816 days 22%
Christian 10/10 5926 days 23%
Lee Chapman 10/10 6026 days 23%
Jo and Tony 10/10 6102 days 23%
Lara Gema Conde 5/10 6202 days 16%
Trish 10/10 6439 days 23%
Fran 8/10 6440 days 22%
SueLinsk 10/10 6440 days 23%
Rosemary 9/10 6440 days 23%
Martin Christina 9/10 6446 days 23%
Meike 8/10 6473 days 22%

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

-4.03% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 44 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 -3.97%
198 -3.99%
199 -4.01%
200 -4.03%
201 -4.05%
202 -4.07%
203 -4.09%

Balancing Adjustment

1.44% 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

89%

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.