Ranking Score Explained

G'day, 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.

Cymen Crick's avatar

Cymen Crick

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

99.77%

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 3302 days 100%
Marianne Leclerco 10/10 3369 days 56%
Steven Goossens 10/10 3394 days 91%
Chris Ru 10/10 3394 days 91%
Christin Winter 10/10 3395 days 91%
Maud Eskes 10/10 3455 days 86%
Brooke Dees 10/10 3455 days 86%
Johanna Mabille 10/10 3487 days 83%
Felix Eberhard 10/10 3547 days 77%
Danny Hughes 10/10 3608 days 71%
Lee Gilson 10/10 3608 days 71%
Magalie Gilles 10/10 3608 days 71%
Anthony Baker 10/10 3608 days 71%
Matthew Durham 10/10 3608 days 71%
Weston Newman 10/10 3609 days 71%
Lydia Downey 10/10 3639 days 68%
Jon S 10/10 3639 days 68%
Kevin Hopper 10/10 3667 days 66%
Marion Butz 10/10 3667 days 66%
James Martin 10/10 3698 days 63%
Joel Tennant 10/10 3698 days 63%
Dominique Brandl 10/10 3759 days 57%
Christine Zumbeck 10/10 3759 days 57%
Philip Ayles 10/10 3790 days 54%
Hayden 10/10 3820 days 51%
bryce 10/10 3852 days 49%
Gunther Kothen 10/10 3974 days 37%
Charli & Ben 10/10 3974 days 37%
Dave Macleod 10/10 3974 days 37%
rick kaminer 10/10 4033 days 32%
Josch Beh 10/10 4033 days 32%
Matthew Blaikie 10/10 4033 days 32%
Mandy Dawson 9/10 4033 days 31%
Tess Idiens 10/10 4063 days 29%
Mikaël Krummen 10/10 4064 days 29%
Brian Barnard 10/10 4156 days 20%
Alix 10/10 4156 days 20%
sebastian krause 10/10 4248 days 11%
Annika Strönisch 10/10 4248 days 11%
Sarah Ling 10/10 4278 days 9%
Lydia Lowe 10/10 4309 days 6%
Debbie hogan 10/10 4339 days 3%
Ellen Herrlin 10/10 4339 days 3%
Brendon 10/10 4370 days 0%
Rob 10/10 4370 days 0%
JamesR 10/10 4370 days 0%
david kirk 10/10 4370 days 0%
Bhakti Patel 10/10 4398 days 47%
bernd 10/10 4398 days 47%
Amy Coolidge 10/10 4398 days 47%
Don Mueller 10/10 4398 days 47%
Katie Morgan 10/10 4428 days 47%
barbara nielsen 10/10 4429 days 47%
Stine Bøttern 10/10 4429 days 47%
embatfish 10/10 4460 days 47%
christie wood 10/10 4460 days 47%
Mellow 10/10 4490 days 47%
MelNZ 10/10 4582 days 47%
ToGy 10/10 4735 days 47%
EtienneCornu 10/10 4764 days 47%
francis 10/10 4795 days 47%
melika 10/10 4795 days 47%
esty6 10/10 4795 days 47%
cerys1979 10/10 4795 days 47%
jamieroysimmonds 10/10 4826 days 47%
rudling36 10/10 4887 days 47%
sftyler 10/10 4887 days 47%
eoolsen 10/10 4917 days 47%
jmark 10/10 4917 days 47%
GenoReynoldo 10/10 4917 days 47%
Kiedo 10/10 5009 days 47%
gillwalsh 10/10 5040 days 47%
ocds4321 10/10 5040 days 47%
toquade 10/10 5070 days 47%
Tajon 10/10 5070 days 47%
aragonesa 10/10 5070 days 47%
Kris_Lim 10/10 5070 days 47%
Glen_Mitchell 10/10 5101 days 47%
baz15 10/10 5101 days 47%
hoellund 10/10 5129 days 47%
bttrix 10/10 5129 days 47%
nigel275 9/10 5129 days 46%
leonsenchenko 10/10 5129 days 47%
lightoverloard 10/10 5129 days 47%
Lodesman 10/10 5160 days 47%
rivendell 10/10 5160 days 47%
illgetubutla 10/10 5160 days 47%
drross 10/10 5191 days 47%
nickjjjjbbbb 10/10 5191 days 47%
berniesheehan 10/10 5221 days 47%
JeanLouis 10/10 5221 days 47%
OliviaDW 10/10 5221 days 47%
Scaife 10/10 5221 days 47%
Kristien 10/10 5221 days 47%
Malcolm Glad 9/10 5479 days 27%
Alan_Maich 10/10 5525 days 47%

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

-4.15% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 52 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 -4.09%
198 -4.11%
199 -4.13%
200 -4.15%
201 -4.17%
202 -4.19%
203 -4.21%

Balancing Adjustment

0.38% Adjustment

Every experience's review score is adjusted to balance out the disproportional number of negative reviews that are contributed.

You won't be surprised to learn that disgruntled customers are more likely to leave a review than happy ones. They are motivated to share their experience and warn others. We consider this a good thing and it's why reading the reviews is important. However we've learned it can misrepresent the experience in a more overall sense.

We apply a balancing adjustment to counteract this effect and ensure the ranking score is a more fair representation of the experience. This adjustment is applied equally to all experiences.

Final Ranking Score

96%

The final ranking score once any adjustments, ratings, and rounding has been applied. This value is recalculated each day and a short rolling average is applied. Therefore it may not be precisely accurate based on the other values presented.