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 1908 days 100%
Marianne Leclerco 10/10 1975 days 58%
Steven Goossens 10/10 2000 days 95%
Chris Ru 10/10 2000 days 95%
Christin Winter 10/10 2001 days 95%
Maud Eskes 10/10 2061 days 91%
Brooke Dees 10/10 2061 days 91%
Johanna Mabille 10/10 2092 days 89%
Felix Eberhard 10/10 2153 days 86%
Danny Hughes 10/10 2214 days 82%
Lee Gilson 10/10 2214 days 82%
Magalie Gilles 10/10 2214 days 82%
Anthony Baker 10/10 2214 days 82%
Matthew Durham 10/10 2214 days 82%
Weston Newman 10/10 2215 days 82%
Lydia Downey 10/10 2245 days 81%
Jon S 10/10 2245 days 81%
Kevin Hopper 10/10 2273 days 79%
Marion Butz 10/10 2273 days 79%
James Martin 10/10 2304 days 77%
Joel Tennant 10/10 2304 days 77%
Dominique Brandl 10/10 2365 days 74%
Christine Zumbeck 10/10 2365 days 74%
Philip Ayles 10/10 2396 days 72%
Hayden 10/10 2426 days 70%
bryce 10/10 2457 days 68%
Gunther Kothen 10/10 2580 days 61%
Charli & Ben 10/10 2580 days 61%
Dave Macleod 10/10 2580 days 61%
rick kaminer 10/10 2639 days 58%
Josch Beh 10/10 2639 days 58%
Matthew Blaikie 10/10 2639 days 58%
Mandy Dawson 9/10 2639 days 58%
Tess Idiens 10/10 2669 days 56%
Mikaël Krummen 10/10 2670 days 56%
Brian Barnard 10/10 2762 days 51%
Alix 10/10 2762 days 51%
sebastian krause 10/10 2853 days 46%
Annika Strönisch 10/10 2853 days 46%
Sarah Ling 10/10 2883 days 44%
Lydia Lowe 10/10 2914 days 42%
Debbie hogan 10/10 2945 days 40%
Ellen Herrlin 10/10 2945 days 40%
Brendon 10/10 2976 days 39%
Rob 10/10 2976 days 39%
JamesR 10/10 2976 days 39%
david kirk 10/10 2976 days 39%
Bhakti Patel 10/10 3004 days 37%
bernd 10/10 3004 days 37%
Amy Coolidge 10/10 3004 days 37%
Don Mueller 10/10 3004 days 37%
Katie Morgan 10/10 3034 days 35%
barbara nielsen 10/10 3035 days 35%
Stine Bøttern 10/10 3035 days 35%
embatfish 10/10 3066 days 33%
christie wood 10/10 3066 days 33%
Mellow 10/10 3096 days 32%
MelNZ 10/10 3187 days 26%
ToGy 10/10 3341 days 18%
EtienneCornu 10/10 3370 days 16%
francis 10/10 3401 days 14%
melika 10/10 3401 days 14%
esty6 10/10 3401 days 14%
cerys1979 10/10 3401 days 14%
jamieroysimmonds 10/10 3432 days 12%
rudling36 10/10 3493 days 9%
sftyler 10/10 3493 days 9%
eoolsen 10/10 3522 days 7%
jmark 10/10 3522 days 7%
GenoReynoldo 10/10 3522 days 7%
Kiedo 10/10 3614 days 2%
gillwalsh 10/10 3645 days 0%
ocds4321 10/10 3645 days 0%
toquade 10/10 3676 days 29%
Tajon 10/10 3676 days 29%
aragonesa 10/10 3676 days 29%
Kris_Lim 10/10 3676 days 29%
Glen_Mitchell 10/10 3707 days 29%
baz15 10/10 3707 days 29%
hoellund 10/10 3735 days 29%
bttrix 10/10 3735 days 29%
nigel275 9/10 3735 days 29%
leonsenchenko 10/10 3735 days 29%
lightoverloard 10/10 3735 days 29%
Lodesman 10/10 3766 days 29%
rivendell 10/10 3766 days 29%
illgetubutla 10/10 3766 days 29%
drross 10/10 3797 days 29%
nickjjjjbbbb 10/10 3797 days 29%
berniesheehan 10/10 3827 days 29%
JeanLouis 10/10 3827 days 29%
OliviaDW 10/10 3827 days 29%
Scaife 10/10 3827 days 29%
Kristien 10/10 3827 days 29%
Malcolm Glad 9/10 4085 days 17%
Alan_Maich 10/10 4131 days 29%

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

-3.29% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 71 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 -3.24%
198 -3.26%
199 -3.28%
200 -3.29%
201 -3.31%
202 -3.32%
203 -3.34%

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.