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

89.89%

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
Barbara McNab 10/10 887 days 11.86 100%
Cherie and Dan 10/10 1227 days true 4.74 40%
Netta Tyler 10/10 1279 days 4.64 39%
Theerada Wongkaew 10/10 1321 days true 4.56 38%
Gazmira Molina 8/10 1364 days true 4.25 36%
Jessica Nasstrom 8/10 1371 days true 4.24 36%
Adeline 8/10 1376 days true 4.23 36%
Rebecca Pierce 10/10 1402 days 4.4 37%
Jane Simmons 10/10 1524 days 4.16 35%
Julia Clark 9/10 1592 days 4.03 34%
Kristina Breitwieser 10/10 1597 days true 4.02 34%
Olivier Anciaux 7/10 1610 days true 3.63 31%
Justine Hoffmann 9/10 1642 days true 3.93 33%
Ruven Rintelmann 9/10 1647 days true 3.92 33%
Niels Hoogendooen 8/10 1660 days true 3.7 31%
Marie Brauherr 10/10 1668 days true 3.88 33%
Luisa and Hannes 8/10 1672 days true 3.68 31%
Christian Boudreau 9/10 1690 days true 3.84 32%
Manuela Opprecht 7/10 2022 days 2.9 24%
Damaris Mayer 3/10 2022 days true 2.45 21%
Sophie Huybrechts 10/10 2064 days true 3.1 26%
Ally Cook 9/10 2068 days true 3.1 26%
Jessie Sabine 9/10 2367 days true 2.51 21%
Katrina Gamby 10/10 2725 days true 1.81 15%
Sonia Sennane 10/10 3079 days true 1.12 9%
Melanie Friessen 9/10 3080 days true 1.12 9%
Barry Baily 10/10 3091 days true 1.09 9%
Elisabeth 9/10 3100 days true 1.08 9%
Lotte Foged 8/10 3105 days true 1.01 9%
Anika 8/10 3106 days true 1.01 9%
Paul 8/10 3176 days true 0.88 7%
Elke & Charlotte 9/10 3189 days true 0.9 8%
Kris Gijbels 9/10 3422 days true 0.45 4%
Patrick Gloede 10/10 3427 days true 0.44 4%
Norm and Sky 9/10 3432 days true 0.43 4%
Roald and Ellen 9/10 3433 days true 0.42 4%
B Kleven 10/10 3438 days true 0.41 3%
Ann-Katrine & Sille 10/10 3442 days true 0.41 3%
Erland Ostberg 8/10 3446 days true 0.38 3%
Helene Descamps 9/10 3460 days true 0.37 3%
Heather Deobald 9/10 3462 days true 0.37 3%
Christina Fischer 6/10 3467 days true 0.3 3%
Shoe 10/10 3534 days 0.23 2%
RobThexton 10/10 3687 days 0.0 0%
Martin 9/10 3748 days true 0.0 0%
cpochin 10/10 3778 days 0.0 0%
John Casey 10/10 3790 days true 0.0 0%
Peter Schmidt 10/10 3809 days 0.0 0%
Elisabeth Egerup 10/10 3816 days true 0.0 0%
Vera Van Schie 10/10 3817 days true 0.0 0%
Chris Glasg 10/10 3817 days true 0.0 0%
Klass 9/10 3823 days true 0.0 0%
Belinda Godhard 9/10 3834 days true 0.0 0%
Theta 9/10 3837 days 0.0 0%
jamesg 9/10 3897 days true 0.0 0%
Mille Winther 10/10 3910 days true 0.0 0%
Christine Van Den Berg Michele Imbach 10/10 3922 days true 0.0 0%
Eilahtan4 10/10 3960 days 0.0 0%
NZDiver 10/10 4021 days 0.0 0%
Nikki Turner 10/10 4064 days true 0.0 0%
Christine Dadd 8/10 4131 days true 0.0 0%
KatieR 10/10 4141 days true 0.0 0%
Michael Maddams 9/10 4141 days true 0.0 0%
Russ C 8/10 4143 days 0.0 0%
danam 10/10 4144 days true 0.0 0%
Katy1 9/10 4145 days true 0.0 0%
StefanieGermany 9/10 4160 days true 0.0 0%
lannie 9/10 4176 days true 0.0 0%
AbigailB 10/10 4188 days true 0.0 0%
ReneeA 10/10 4191 days true 0.0 0%
Ute 9/10 4195 days true 0.0 0%
Annika 10/10 4207 days true 0.0 0%
Salick 9/10 4207 days true 0.0 0%
Thomas 8/10 4214 days true 0.0 0%
Prentner 10/10 4223 days true 0.0 0%
Evi 9/10 4248 days true 0.0 0%
Limor 8/10 4249 days true 0.0 0%
Christian 10/10 4358 days true 0.0 0%
Lee Chapman 10/10 4459 days 0.0 0%
Jo and Tony 10/10 4535 days true 0.0 0%
Lara Gema Conde 5/10 4635 days true 0.0 0%
Trish 10/10 4872 days true 0.0 0%
Fran 8/10 4873 days true 0.0 0%
SueLinsk 10/10 4873 days true 0.0 0%
Rosemary 9/10 4873 days true 0.0 0%
Martin Christina 9/10 4879 days true 0.0 0%
Meike 8/10 4906 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 Dive Tutukaka 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 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 -2.12%
198 -2.13%
199 -2.14%
200 -2.15%
201 -2.16%
202 -2.17%
203 -2.18%

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.