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

89.40%

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 1002 days 6.37 100%
Cherie and Dan 10/10 1342 days true 4.52 71%
Netta Tyler 10/10 1394 days 4.41 69%
Theerada Wongkaew 10/10 1436 days true 4.33 68%
Gazmira Molina 8/10 1479 days true 4.04 63%
Jessica Nasstrom 8/10 1486 days true 4.02 63%
Adeline 8/10 1491 days true 4.01 63%
Rebecca Pierce 10/10 1517 days 4.17 66%
Jane Simmons 10/10 1639 days 3.94 62%
Julia Clark 9/10 1707 days 3.8 60%
Kristina Breitwieser 10/10 1712 days true 3.79 60%
Olivier Anciaux 7/10 1725 days true 3.43 54%
Justine Hoffmann 9/10 1757 days true 3.7 58%
Ruven Rintelmann 9/10 1762 days true 3.69 58%
Niels Hoogendooen 8/10 1775 days true 3.49 55%
Marie Brauherr 10/10 1783 days true 3.65 57%
Luisa and Hannes 8/10 1787 days true 3.46 54%
Christian Boudreau 9/10 1805 days true 3.61 57%
Manuela Opprecht 7/10 2137 days 2.69 42%
Damaris Mayer 3/10 2137 days true 2.28 36%
Sophie Huybrechts 10/10 2179 days true 2.88 45%
Ally Cook 9/10 2183 days true 2.87 45%
Jessie Sabine 9/10 2482 days true 2.29 36%
Katrina Gamby 10/10 2840 days true 1.59 25%
Sonia Sennane 10/10 3194 days true 0.89 14%
Melanie Friessen 9/10 3195 days true 0.89 14%
Barry Baily 10/10 3206 days true 0.87 14%
Elisabeth 9/10 3215 days true 0.85 13%
Lotte Foged 8/10 3220 days true 0.8 13%
Anika 8/10 3221 days true 0.8 13%
Paul 8/10 3291 days true 0.67 10%
Elke & Charlotte 9/10 3304 days true 0.68 11%
Kris Gijbels 9/10 3537 days true 0.22 3%
Patrick Gloede 10/10 3542 days true 0.21 3%
Norm and Sky 9/10 3547 days true 0.2 3%
Roald and Ellen 9/10 3548 days true 0.2 3%
B Kleven 10/10 3553 days true 0.19 3%
Ann-Katrine & Sille 10/10 3557 days true 0.18 3%
Erland Ostberg 8/10 3561 days true 0.17 3%
Helene Descamps 9/10 3575 days true 0.15 2%
Heather Deobald 9/10 3577 days true 0.14 2%
Christina Fischer 6/10 3582 days true 0.11 2%
Shoe 10/10 3649 days 0.0 0%
RobThexton 10/10 3802 days 0.0 0%
Martin 9/10 3863 days true 0.0 0%
cpochin 10/10 3893 days 0.0 0%
John Casey 10/10 3905 days true 0.0 0%
Peter Schmidt 10/10 3924 days 0.0 0%
Elisabeth Egerup 10/10 3931 days true 0.0 0%
Vera Van Schie 10/10 3932 days true 0.0 0%
Chris Glasg 10/10 3932 days true 0.0 0%
Klass 9/10 3938 days true 0.0 0%
Belinda Godhard 9/10 3949 days true 0.0 0%
Theta 9/10 3952 days 0.0 0%
jamesg 9/10 4012 days true 0.0 0%
Mille Winther 10/10 4025 days true 0.0 0%
Christine Van Den Berg Michele Imbach 10/10 4037 days true 0.0 0%
Eilahtan4 10/10 4075 days 0.0 0%
NZDiver 10/10 4136 days 0.0 0%
Nikki Turner 10/10 4179 days true 0.0 0%
Christine Dadd 8/10 4246 days true 0.0 0%
KatieR 10/10 4256 days true 0.0 0%
Michael Maddams 9/10 4256 days true 0.0 0%
Russ C 8/10 4258 days 0.0 0%
danam 10/10 4259 days true 0.0 0%
Katy1 9/10 4260 days true 0.0 0%
StefanieGermany 9/10 4275 days true 0.0 0%
lannie 9/10 4291 days true 0.0 0%
AbigailB 10/10 4303 days true 0.0 0%
ReneeA 10/10 4306 days true 0.0 0%
Ute 9/10 4310 days true 0.0 0%
Annika 10/10 4322 days true 0.0 0%
Salick 9/10 4322 days true 0.0 0%
Thomas 8/10 4329 days true 0.0 0%
Prentner 10/10 4338 days true 0.0 0%
Evi 9/10 4363 days true 0.0 0%
Limor 8/10 4364 days true 0.0 0%
Christian 10/10 4473 days true 0.0 0%
Lee Chapman 10/10 4574 days 0.0 0%
Jo and Tony 10/10 4650 days true 0.0 0%
Lara Gema Conde 5/10 4750 days true 0.0 0%
Trish 10/10 4987 days true 0.0 0%
Fran 8/10 4988 days true 0.0 0%
SueLinsk 10/10 4988 days true 0.0 0%
Rosemary 9/10 4988 days true 0.0 0%
Martin Christina 9/10 4994 days true 0.0 0%
Meike 8/10 5021 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

-4.07% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 43 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 -4.01%
198 -4.03%
199 -4.05%
200 -4.07%
201 -4.09%
202 -4.11%
203 -4.13%

Final Ranking Score

85%

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.