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 2178 days 100%
Marianne Leclerco 10/10 2245 days 57%
Steven Goossens 10/10 2270 days 94%
Chris Ru 10/10 2270 days 94%
Christin Winter 10/10 2271 days 94%
Maud Eskes 10/10 2331 days 90%
Brooke Dees 10/10 2331 days 90%
Johanna Mabille 10/10 2363 days 87%
Felix Eberhard 10/10 2423 days 83%
Danny Hughes 10/10 2484 days 79%
Lee Gilson 10/10 2484 days 79%
Magalie Gilles 10/10 2484 days 79%
Anthony Baker 10/10 2484 days 79%
Matthew Durham 10/10 2484 days 79%
Weston Newman 10/10 2485 days 79%
Lydia Downey 10/10 2515 days 77%
Jon S 10/10 2515 days 77%
Kevin Hopper 10/10 2543 days 75%
Marion Butz 10/10 2543 days 75%
James Martin 10/10 2574 days 73%
Joel Tennant 10/10 2574 days 73%
Dominique Brandl 10/10 2635 days 69%
Christine Zumbeck 10/10 2635 days 69%
Philip Ayles 10/10 2666 days 67%
Hayden 10/10 2696 days 65%
bryce 10/10 2728 days 62%
Gunther Kothen 10/10 2850 days 54%
Charli & Ben 10/10 2850 days 54%
Dave Macleod 10/10 2850 days 54%
rick kaminer 10/10 2909 days 50%
Josch Beh 10/10 2909 days 50%
Matthew Blaikie 10/10 2909 days 50%
Mandy Dawson 9/10 2909 days 50%
Tess Idiens 10/10 2939 days 48%
Mikaël Krummen 10/10 2940 days 48%
Brian Barnard 10/10 3032 days 42%
Alix 10/10 3032 days 42%
sebastian krause 10/10 3124 days 35%
Annika Strönisch 10/10 3124 days 35%
Sarah Ling 10/10 3154 days 33%
Lydia Lowe 10/10 3185 days 31%
Debbie hogan 10/10 3215 days 29%
Ellen Herrlin 10/10 3215 days 29%
Brendon 10/10 3246 days 27%
Rob 10/10 3246 days 27%
JamesR 10/10 3246 days 27%
david kirk 10/10 3246 days 27%
Bhakti Patel 10/10 3274 days 25%
bernd 10/10 3274 days 25%
Amy Coolidge 10/10 3274 days 25%
Don Mueller 10/10 3274 days 25%
Katie Morgan 10/10 3304 days 23%
barbara nielsen 10/10 3305 days 23%
Stine Bøttern 10/10 3305 days 23%
embatfish 10/10 3336 days 21%
christie wood 10/10 3336 days 21%
Mellow 10/10 3366 days 19%
MelNZ 10/10 3458 days 12%
ToGy 10/10 3611 days 2%
EtienneCornu 10/10 3640 days 0%
francis 10/10 3671 days 34%
melika 10/10 3671 days 34%
esty6 10/10 3671 days 34%
cerys1979 10/10 3671 days 34%
jamieroysimmonds 10/10 3702 days 34%
rudling36 10/10 3763 days 34%
sftyler 10/10 3763 days 34%
eoolsen 10/10 3793 days 34%
jmark 10/10 3793 days 34%
GenoReynoldo 10/10 3793 days 34%
Kiedo 10/10 3885 days 34%
gillwalsh 10/10 3916 days 34%
ocds4321 10/10 3916 days 34%
toquade 10/10 3946 days 34%
Tajon 10/10 3946 days 34%
aragonesa 10/10 3946 days 34%
Kris_Lim 10/10 3946 days 34%
Glen_Mitchell 10/10 3977 days 34%
baz15 10/10 3977 days 34%
hoellund 10/10 4005 days 34%
bttrix 10/10 4005 days 34%
nigel275 9/10 4005 days 34%
leonsenchenko 10/10 4005 days 34%
lightoverloard 10/10 4005 days 34%
Lodesman 10/10 4036 days 34%
rivendell 10/10 4036 days 34%
illgetubutla 10/10 4036 days 34%
drross 10/10 4067 days 34%
nickjjjjbbbb 10/10 4067 days 34%
berniesheehan 10/10 4097 days 34%
JeanLouis 10/10 4097 days 34%
OliviaDW 10/10 4097 days 34%
Scaife 10/10 4097 days 34%
Kristien 10/10 4097 days 34%
Malcolm Glad 9/10 4355 days 20%
Alan_Maich 10/10 4401 days 34%

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

-4.10% 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 -4.04%
198 -4.06%
199 -4.08%
200 -4.10%
201 -4.12%
202 -4.14%
203 -4.16%

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.