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 North.

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 North

Valid Reviews

96 Valid Reviews

The Dive North experience has a total of 96 valid reviews. There are no invalid reviews 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.

Within these 96 valid reviews, the experience has 2 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 96 valid reviews:

Rating Count Percentage
10/10 93
97%
9/10 3
3%
8/10 0
0%
7/10 0
0%
6/10 0
0%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

99.69% Average

The raw data average (mean) for all the Dive North valid reviews is 99.69% and is based on 96 valid reviews. This value is not used to calculate the ranking score and it only provided here as a comparison to the weighted average.

Weighted Average

99.82%

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
Michael Halligan 10/10 1811 days 100%
Marianne Leclerco 10/10 1878 days 58%
Steven Goossens 10/10 1903 days 95%
Chris Ru 10/10 1903 days 95%
Christin Winter 10/10 1904 days 95%
Maud Eskes 10/10 1964 days 92%
Brooke Dees 10/10 1964 days 92%
Johanna Mabille 10/10 1996 days 90%
Felix Eberhard 10/10 2056 days 87%
Danny Hughes 10/10 2117 days 83%
Lee Gilson 10/10 2117 days 83%
Magalie Gilles 10/10 2117 days 83%
Anthony Baker 10/10 2117 days 83%
Matthew Durham 10/10 2117 days 83%
Weston Newman 10/10 2118 days 83%
Lydia Downey 10/10 2148 days 82%
Jon S 10/10 2148 days 82%
Kevin Hopper 10/10 2176 days 80%
Marion Butz 10/10 2176 days 80%
James Martin 10/10 2207 days 78%
Joel Tennant 10/10 2207 days 78%
Dominique Brandl 10/10 2268 days 75%
Christine Zumbeck 10/10 2268 days 75%
Philip Ayles 10/10 2299 days 73%
Hayden 10/10 2329 days 72%
bryce 10/10 2361 days 70%
Gunther Kothen 10/10 2483 days 63%
Charli & Ben 10/10 2483 days 63%
Dave Macleod 10/10 2483 days 63%
rick kaminer 10/10 2542 days 60%
Josch Beh 10/10 2542 days 60%
Matthew Blaikie 10/10 2542 days 60%
Mandy Dawson 9/10 2542 days 60%
Tess Idiens 10/10 2572 days 58%
Mikaël Krummen 10/10 2573 days 58%
Brian Barnard 10/10 2665 days 53%
Alix 10/10 2665 days 53%
sebastian krause 10/10 2757 days 48%
Annika Strönisch 10/10 2757 days 48%
Sarah Ling 10/10 2787 days 47%
Lydia Lowe 10/10 2818 days 45%
Debbie hogan 10/10 2848 days 43%
Ellen Herrlin 10/10 2848 days 43%
Brendon 10/10 2879 days 42%
Rob 10/10 2879 days 42%
JamesR 10/10 2879 days 42%
david kirk 10/10 2879 days 42%
Bhakti Patel 10/10 2907 days 40%
bernd 10/10 2907 days 40%
Amy Coolidge 10/10 2907 days 40%
Don Mueller 10/10 2907 days 40%
Katie Morgan 10/10 2937 days 38%
barbara nielsen 10/10 2938 days 38%
Stine Bøttern 10/10 2938 days 38%
embatfish 10/10 2969 days 37%
christie wood 10/10 2969 days 37%
Mellow 10/10 2999 days 35%
MelNZ 10/10 3091 days 30%
ToGy 10/10 3244 days 22%
EtienneCornu 10/10 3273 days 20%
francis 10/10 3304 days 18%
melika 10/10 3304 days 18%
esty6 10/10 3304 days 18%
cerys1979 10/10 3304 days 18%
jamieroysimmonds 10/10 3335 days 17%
rudling36 10/10 3396 days 13%
sftyler 10/10 3396 days 13%
eoolsen 10/10 3426 days 12%
jmark 10/10 3426 days 12%
GenoReynoldo 10/10 3426 days 12%
Kiedo 10/10 3518 days 7%
gillwalsh 10/10 3549 days 5%
ocds4321 10/10 3549 days 5%
toquade 10/10 3579 days 3%
Tajon 10/10 3579 days 3%
aragonesa 10/10 3579 days 3%
Kris_Lim 10/10 3579 days 3%
Glen_Mitchell 10/10 3610 days 2%
baz15 10/10 3610 days 2%
hoellund 10/10 3638 days 0%
bttrix 10/10 3638 days 0%
nigel275 9/10 3638 days 0%
leonsenchenko 10/10 3638 days 0%
lightoverloard 10/10 3638 days 0%
Lodesman 10/10 3669 days 27%
rivendell 10/10 3669 days 27%
illgetubutla 10/10 3669 days 27%
drross 10/10 3700 days 27%
nickjjjjbbbb 10/10 3700 days 27%
berniesheehan 10/10 3730 days 27%
JeanLouis 10/10 3730 days 27%
OliviaDW 10/10 3730 days 27%
Scaife 10/10 3730 days 27%
Kristien 10/10 3730 days 27%
Malcolm Glad 9/10 3988 days 16%
Alan_Maich 10/10 4034 days 27%

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 North experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-4.09% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 46 days. However the Dive North 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 North experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -4.03%
198 -4.05%
199 -4.07%
200 -4.09%
201 -4.11%
202 -4.13%
203 -4.15%

Final Ranking Score

96%

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.