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

89.64%

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 10/10 937 days 8.96 100%
Cherie and Dan 10/10 1277 days true 4.64 52%
Netta Tyler 10/10 1329 days 4.54 51%
Theerada Wongkaew 10/10 1371 days true 4.46 50%
Gazmira Molina 8/10 1414 days true 4.16 46%
Jessica Nasstrom 8/10 1421 days true 4.14 46%
Adeline 8/10 1426 days true 4.13 46%
Rebecca Pierce 10/10 1452 days 4.3 48%
Jane Simmons 10/10 1574 days 4.06 45%
Julia Clark 9/10 1642 days 3.93 44%
Kristina Breitwieser 10/10 1647 days true 3.92 44%
Olivier Anciaux 7/10 1660 days true 3.54 40%
Justine Hoffmann 9/10 1692 days true 3.83 43%
Ruven Rintelmann 9/10 1697 days true 3.82 43%
Niels Hoogendooen 8/10 1710 days true 3.61 40%
Marie Brauherr 10/10 1718 days true 3.78 42%
Luisa and Hannes 8/10 1722 days true 3.58 40%
Christian Boudreau 9/10 1740 days true 3.74 42%
Manuela Opprecht 7/10 2072 days 2.81 31%
Damaris Mayer 3/10 2072 days true 2.38 27%
Sophie Huybrechts 10/10 2114 days true 3.01 34%
Ally Cook 9/10 2118 days true 3.0 33%
Jessie Sabine 9/10 2417 days true 2.41 27%
Katrina Gamby 10/10 2775 days true 1.71 19%
Sonia Sennane 10/10 3129 days true 1.02 11%
Melanie Friessen 9/10 3130 days true 1.02 11%
Barry Baily 10/10 3141 days true 1.0 11%
Elisabeth 9/10 3150 days true 0.98 11%
Lotte Foged 8/10 3155 days true 0.92 10%
Anika 8/10 3156 days true 0.92 10%
Paul 8/10 3226 days true 0.79 9%
Elke & Charlotte 9/10 3239 days true 0.8 9%
Kris Gijbels 9/10 3472 days true 0.35 4%
Patrick Gloede 10/10 3477 days true 0.34 4%
Norm and Sky 9/10 3482 days true 0.33 4%
Roald and Ellen 9/10 3483 days true 0.33 4%
B Kleven 10/10 3488 days true 0.32 4%
Ann-Katrine & Sille 10/10 3492 days true 0.31 3%
Erland Ostberg 8/10 3496 days true 0.29 3%
Helene Descamps 9/10 3510 days true 0.27 3%
Heather Deobald 9/10 3512 days true 0.27 3%
Christina Fischer 6/10 3517 days true 0.22 2%
Shoe 10/10 3584 days 0.13 1%
RobThexton 10/10 3737 days 0.0 0%
Martin 9/10 3798 days true 0.0 0%
cpochin 10/10 3828 days 0.0 0%
John Casey 10/10 3840 days true 0.0 0%
Peter Schmidt 10/10 3859 days 0.0 0%
Elisabeth Egerup 10/10 3866 days true 0.0 0%
Vera Van Schie 10/10 3867 days true 0.0 0%
Chris Glasg 10/10 3867 days true 0.0 0%
Klass 9/10 3873 days true 0.0 0%
Belinda Godhard 9/10 3884 days true 0.0 0%
Theta 9/10 3887 days 0.0 0%
jamesg 9/10 3947 days true 0.0 0%
Mille Winther 10/10 3960 days true 0.0 0%
Christine Van Den Berg Michele Imbach 10/10 3972 days true 0.0 0%
Eilahtan4 10/10 4010 days 0.0 0%
NZDiver 10/10 4071 days 0.0 0%
Nikki Turner 10/10 4114 days true 0.0 0%
Christine Dadd 8/10 4181 days true 0.0 0%
KatieR 10/10 4191 days true 0.0 0%
Michael Maddams 9/10 4191 days true 0.0 0%
Russ C 8/10 4193 days 0.0 0%
danam 10/10 4194 days true 0.0 0%
Katy1 9/10 4195 days true 0.0 0%
StefanieGermany 9/10 4210 days true 0.0 0%
lannie 9/10 4226 days true 0.0 0%
AbigailB 10/10 4238 days true 0.0 0%
ReneeA 10/10 4241 days true 0.0 0%
Ute 9/10 4245 days true 0.0 0%
Annika 10/10 4257 days true 0.0 0%
Salick 9/10 4257 days true 0.0 0%
Thomas 8/10 4264 days true 0.0 0%
Prentner 10/10 4273 days true 0.0 0%
Evi 9/10 4298 days true 0.0 0%
Limor 8/10 4299 days true 0.0 0%
Christian 10/10 4408 days true 0.0 0%
Lee Chapman 10/10 4509 days 0.0 0%
Jo and Tony 10/10 4585 days true 0.0 0%
Lara Gema Conde 5/10 4685 days true 0.0 0%
Trish 10/10 4922 days true 0.0 0%
Fran 8/10 4923 days true 0.0 0%
SueLinsk 10/10 4923 days true 0.0 0%
Rosemary 9/10 4923 days true 0.0 0%
Martin Christina 9/10 4929 days true 0.0 0%
Meike 8/10 4956 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

-3.12% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 72 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 -3.07%
198 -3.09%
199 -3.10%
200 -3.12%
201 -3.13%
202 -3.15%
203 -3.16%

Final Ranking Score

87%

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.