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

99.76%

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 2055 days 100%
Marianne Leclerco 10/10 2121 days 57%
Steven Goossens 10/10 2147 days 94%
Chris Ru 10/10 2147 days 94%
Christin Winter 10/10 2147 days 94%
Maud Eskes 10/10 2208 days 90%
Brooke Dees 10/10 2208 days 90%
Johanna Mabille 10/10 2239 days 88%
Felix Eberhard 10/10 2300 days 85%
Danny Hughes 10/10 2361 days 81%
Lee Gilson 10/10 2361 days 81%
Magalie Gilles 10/10 2361 days 81%
Anthony Baker 10/10 2361 days 81%
Matthew Durham 10/10 2361 days 81%
Weston Newman 10/10 2361 days 81%
Lydia Downey 10/10 2392 days 79%
Jon S 10/10 2392 days 79%
Kevin Hopper 10/10 2420 days 77%
Marion Butz 10/10 2420 days 77%
James Martin 10/10 2451 days 75%
Joel Tennant 10/10 2451 days 75%
Dominique Brandl 10/10 2512 days 71%
Christine Zumbeck 10/10 2512 days 71%
Philip Ayles 10/10 2543 days 69%
Hayden 10/10 2573 days 67%
bryce 10/10 2604 days 65%
Gunther Kothen 10/10 2726 days 58%
Charli & Ben 10/10 2726 days 58%
Dave Macleod 10/10 2726 days 58%
rick kaminer 10/10 2785 days 54%
Josch Beh 10/10 2785 days 54%
Matthew Blaikie 10/10 2785 days 54%
Mandy Dawson 9/10 2785 days 54%
Tess Idiens 10/10 2816 days 52%
Mikaël Krummen 10/10 2816 days 52%
Brian Barnard 10/10 2908 days 46%
Alix 10/10 2908 days 46%
sebastian krause 10/10 3000 days 40%
Annika Strönisch 10/10 3000 days 40%
Sarah Ling 10/10 3030 days 38%
Lydia Lowe 10/10 3061 days 36%
Debbie hogan 10/10 3091 days 35%
Ellen Herrlin 10/10 3091 days 35%
Brendon 10/10 3122 days 33%
Rob 10/10 3122 days 33%
JamesR 10/10 3122 days 33%
david kirk 10/10 3122 days 33%
Bhakti Patel 10/10 3150 days 31%
bernd 10/10 3150 days 31%
Amy Coolidge 10/10 3150 days 31%
Don Mueller 10/10 3150 days 31%
Katie Morgan 10/10 3181 days 29%
barbara nielsen 10/10 3181 days 29%
Stine Bøttern 10/10 3181 days 29%
embatfish 10/10 3212 days 27%
christie wood 10/10 3212 days 27%
Mellow 10/10 3242 days 25%
MelNZ 10/10 3334 days 19%
ToGy 10/10 3487 days 10%
EtienneCornu 10/10 3516 days 8%
francis 10/10 3547 days 6%
melika 10/10 3547 days 6%
esty6 10/10 3547 days 6%
cerys1979 10/10 3547 days 6%
jamieroysimmonds 10/10 3578 days 4%
rudling36 10/10 3639 days 0%
sftyler 10/10 3639 days 0%
eoolsen 10/10 3669 days 32%
jmark 10/10 3669 days 32%
GenoReynoldo 10/10 3669 days 32%
Kiedo 10/10 3761 days 32%
gillwalsh 10/10 3792 days 32%
ocds4321 10/10 3792 days 32%
toquade 10/10 3822 days 32%
Tajon 10/10 3822 days 32%
aragonesa 10/10 3822 days 32%
Kris_Lim 10/10 3822 days 32%
Glen_Mitchell 10/10 3853 days 32%
baz15 10/10 3853 days 32%
hoellund 10/10 3881 days 32%
bttrix 10/10 3881 days 32%
nigel275 9/10 3881 days 32%
leonsenchenko 10/10 3881 days 32%
lightoverloard 10/10 3881 days 32%
Lodesman 10/10 3912 days 32%
rivendell 10/10 3912 days 32%
illgetubutla 10/10 3912 days 32%
drross 10/10 3943 days 32%
nickjjjjbbbb 10/10 3943 days 32%
berniesheehan 10/10 3973 days 32%
JeanLouis 10/10 3973 days 32%
OliviaDW 10/10 3973 days 32%
Scaife 10/10 3973 days 32%
Kristien 10/10 3973 days 32%
Malcolm Glad 9/10 4231 days 19%
Alan_Maich 10/10 4277 days 32%

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

-2.96% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 77 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 -2.92%
198 -2.93%
199 -2.95%
200 -2.96%
201 -2.98%
202 -2.99%
203 -3.01%

Final Ranking Score

97%

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.