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.

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

99.75%

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 2347 days 100%
Marianne Leclerco 10/10 2413 days 56%
Steven Goossens 10/10 2439 days 93%
Chris Ru 10/10 2439 days 93%
Christin Winter 10/10 2439 days 93%
Maud Eskes 10/10 2500 days 88%
Brooke Dees 10/10 2500 days 88%
Johanna Mabille 10/10 2531 days 86%
Felix Eberhard 10/10 2592 days 81%
Danny Hughes 10/10 2653 days 76%
Lee Gilson 10/10 2653 days 76%
Magalie Gilles 10/10 2653 days 76%
Anthony Baker 10/10 2653 days 76%
Matthew Durham 10/10 2653 days 76%
Weston Newman 10/10 2653 days 76%
Lydia Downey 10/10 2684 days 74%
Jon S 10/10 2684 days 74%
Kevin Hopper 10/10 2712 days 71%
Marion Butz 10/10 2712 days 71%
James Martin 10/10 2743 days 69%
Joel Tennant 10/10 2743 days 69%
Dominique Brandl 10/10 2804 days 64%
Christine Zumbeck 10/10 2804 days 64%
Philip Ayles 10/10 2835 days 62%
Hayden 10/10 2865 days 59%
bryce 10/10 2896 days 57%
Gunther Kothen 10/10 3018 days 48%
Charli & Ben 10/10 3018 days 48%
Dave Macleod 10/10 3018 days 48%
rick kaminer 10/10 3077 days 43%
Josch Beh 10/10 3077 days 43%
Matthew Blaikie 10/10 3077 days 43%
Mandy Dawson 9/10 3077 days 43%
Tess Idiens 10/10 3108 days 41%
Mikaël Krummen 10/10 3108 days 41%
Brian Barnard 10/10 3200 days 33%
Alix 10/10 3200 days 33%
sebastian krause 10/10 3292 days 26%
Annika Strönisch 10/10 3292 days 26%
Sarah Ling 10/10 3322 days 24%
Lydia Lowe 10/10 3353 days 21%
Debbie hogan 10/10 3383 days 19%
Ellen Herrlin 10/10 3383 days 19%
Brendon 10/10 3414 days 17%
Rob 10/10 3414 days 17%
JamesR 10/10 3414 days 17%
david kirk 10/10 3414 days 17%
Bhakti Patel 10/10 3442 days 14%
bernd 10/10 3442 days 14%
Amy Coolidge 10/10 3442 days 14%
Don Mueller 10/10 3442 days 14%
Katie Morgan 10/10 3473 days 12%
barbara nielsen 10/10 3473 days 12%
Stine Bøttern 10/10 3473 days 12%
embatfish 10/10 3504 days 10%
christie wood 10/10 3504 days 10%
Mellow 10/10 3534 days 7%
MelNZ 10/10 3626 days 0%
ToGy 10/10 3779 days 38%
EtienneCornu 10/10 3808 days 38%
francis 10/10 3839 days 38%
melika 10/10 3839 days 38%
esty6 10/10 3839 days 38%
cerys1979 10/10 3839 days 38%
jamieroysimmonds 10/10 3870 days 38%
rudling36 10/10 3931 days 38%
sftyler 10/10 3931 days 38%
eoolsen 10/10 3961 days 38%
jmark 10/10 3961 days 38%
GenoReynoldo 10/10 3961 days 38%
Kiedo 10/10 4053 days 38%
gillwalsh 10/10 4084 days 38%
ocds4321 10/10 4084 days 38%
toquade 10/10 4114 days 38%
Tajon 10/10 4114 days 38%
aragonesa 10/10 4114 days 38%
Kris_Lim 10/10 4114 days 38%
Glen_Mitchell 10/10 4145 days 38%
baz15 10/10 4145 days 38%
hoellund 10/10 4173 days 38%
bttrix 10/10 4173 days 38%
nigel275 9/10 4173 days 38%
leonsenchenko 10/10 4173 days 38%
lightoverloard 10/10 4173 days 38%
Lodesman 10/10 4204 days 38%
rivendell 10/10 4204 days 38%
illgetubutla 10/10 4204 days 38%
drross 10/10 4235 days 38%
nickjjjjbbbb 10/10 4235 days 38%
berniesheehan 10/10 4265 days 38%
JeanLouis 10/10 4265 days 38%
OliviaDW 10/10 4265 days 38%
Scaife 10/10 4265 days 38%
Kristien 10/10 4265 days 38%
Malcolm Glad 9/10 4523 days 22%
Alan_Maich 10/10 4569 days 38%

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

-2.02% Adjustment

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

Final Ranking Score

98%

The final ranking score once any adjustments, ratings, 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.