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

90.06%

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 10/10 857 days 13.98 100%
Cherie and Dan 10/10 1197 days true 4.8 34%
Netta Tyler 10/10 1250 days 4.7 34%
Theerada Wongkaew 10/10 1291 days true 4.62 33%
Gazmira Molina 8/10 1334 days true 4.31 31%
Jessica Nasstrom 8/10 1341 days true 4.29 31%
Adeline 8/10 1346 days true 4.28 31%
Rebecca Pierce 10/10 1373 days 4.46 32%
Jane Simmons 10/10 1495 days 4.22 30%
Julia Clark 9/10 1562 days 4.09 29%
Kristina Breitwieser 10/10 1567 days true 4.08 29%
Olivier Anciaux 7/10 1580 days true 3.69 26%
Justine Hoffmann 9/10 1612 days true 3.99 29%
Ruven Rintelmann 9/10 1617 days true 3.98 28%
Niels Hoogendooen 8/10 1630 days true 3.76 27%
Marie Brauherr 10/10 1638 days true 3.94 28%
Luisa and Hannes 8/10 1642 days true 3.73 27%
Christian Boudreau 9/10 1660 days true 3.89 28%
Manuela Opprecht 7/10 1992 days 2.95 21%
Damaris Mayer 3/10 1992 days true 2.5 18%
Sophie Huybrechts 10/10 2034 days true 3.16 23%
Ally Cook 9/10 2038 days true 3.15 23%
Jessie Sabine 9/10 2337 days true 2.57 18%
Katrina Gamby 10/10 2695 days true 1.87 13%
Sonia Sennane 10/10 3049 days true 1.18 8%
Melanie Friessen 9/10 3050 days true 1.17 8%
Barry Baily 10/10 3061 days true 1.15 8%
Elisabeth 9/10 3070 days true 1.14 8%
Lotte Foged 8/10 3075 days true 1.07 8%
Anika 8/10 3076 days true 1.07 8%
Paul 8/10 3146 days true 0.94 7%
Elke & Charlotte 9/10 3159 days true 0.96 7%
Kris Gijbels 9/10 3392 days true 0.5 4%
Patrick Gloede 10/10 3397 days true 0.5 4%
Norm and Sky 9/10 3402 days true 0.49 3%
Roald and Ellen 9/10 3403 days true 0.48 3%
B Kleven 10/10 3408 days true 0.47 3%
Ann-Katrine & Sille 10/10 3412 days true 0.47 3%
Erland Ostberg 8/10 3416 days true 0.44 3%
Helene Descamps 9/10 3430 days true 0.43 3%
Heather Deobald 9/10 3432 days true 0.43 3%
Christina Fischer 6/10 3437 days true 0.35 2%
Shoe 10/10 3504 days 0.29 2%
RobThexton 10/10 3657 days 0.0 0%
Martin 9/10 3718 days true 0.0 0%
cpochin 10/10 3748 days 0.0 0%
John Casey 10/10 3760 days true 0.0 0%
Peter Schmidt 10/10 3779 days 0.0 0%
Elisabeth Egerup 10/10 3786 days true 0.0 0%
Vera Van Schie 10/10 3787 days true 0.0 0%
Chris Glasg 10/10 3787 days true 0.0 0%
Klass 9/10 3793 days true 0.0 0%
Belinda Godhard 9/10 3804 days true 0.0 0%
Theta 9/10 3807 days 0.0 0%
jamesg 9/10 3867 days true 0.0 0%
Mille Winther 10/10 3880 days true 0.0 0%
Christine Van Den Berg Michele Imbach 10/10 3892 days true 0.0 0%
Eilahtan4 10/10 3930 days 0.0 0%
NZDiver 10/10 3991 days 0.0 0%
Nikki Turner 10/10 4034 days true 0.0 0%
Christine Dadd 8/10 4101 days true 0.0 0%
KatieR 10/10 4111 days true 0.0 0%
Michael Maddams 9/10 4111 days true 0.0 0%
Russ C 8/10 4113 days 0.0 0%
danam 10/10 4115 days true 0.0 0%
Katy1 9/10 4115 days true 0.0 0%
StefanieGermany 9/10 4131 days true 0.0 0%
lannie 9/10 4147 days true 0.0 0%
AbigailB 10/10 4158 days true 0.0 0%
ReneeA 10/10 4161 days true 0.0 0%
Ute 9/10 4166 days true 0.0 0%
Annika 10/10 4178 days true 0.0 0%
Salick 9/10 4178 days true 0.0 0%
Thomas 8/10 4185 days true 0.0 0%
Prentner 10/10 4194 days true 0.0 0%
Evi 9/10 4219 days true 0.0 0%
Limor 8/10 4219 days true 0.0 0%
Christian 10/10 4329 days true 0.0 0%
Lee Chapman 10/10 4429 days 0.0 0%
Jo and Tony 10/10 4505 days true 0.0 0%
Lara Gema Conde 5/10 4605 days true 0.0 0%
Trish 10/10 4842 days true 0.0 0%
Fran 8/10 4843 days true 0.0 0%
SueLinsk 10/10 4843 days true 0.0 0%
Rosemary 9/10 4843 days true 0.0 0%
Martin Christina 9/10 4849 days true 0.0 0%
Meike 8/10 4876 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

-2.02% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 124 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 -1.99%
198 -2.00%
199 -2.01%
200 -2.02%
201 -2.03%
202 -2.04%
203 -2.05%

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.