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 ZORB Rotorua.

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

ZORB Rotorua

Valid Reviews

132 Valid Reviews

The ZORB Rotorua experience has a total of 133 reviews. There are 132 valid reviews that are included when calculating the ranking score and 1 invalid review 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.

Below is the distribution of ratings for the 132 valid reviews:

Rating Count Percentage
10/10 27
20%
9/10 17
13%
8/10 38
29%
7/10 26
20%
6/10 13
10%
5/10 5
4%
4/10 4
3%
3/10 2
2%
2/10 0
0%
1/10 0
0%

78.33% Average

The raw data average (mean) for all the ZORB Rotorua valid reviews is 78.33% and is based on 132 valid reviews. This value is not used to calculate the ranking score and it only provided here as a comparison to the weighted average.

Face-to-Face Reviews

120 Face-to-Face Reviews

The Rankers team meets with travellers while they’re in New Zealand and conducts face-to-face surveys. These reviews, in our opinion, are the most trusted in the industry and represent a critical control sample. To our knowledge, we are the only travel review website in the world that has gone to this extent.

More about face-to-face reviews

Within the 132 valid reviews, the experience has 120 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 120 face-to-face reviews:

Rating Count Percentage
10/10 24
20%
9/10 16
13%
8/10 37
31%
7/10 21
18%
6/10 12
10%
5/10 4
3%
4/10 4
3%
3/10 2
2%
2/10 0
0%
1/10 0
0%

78.42% Average

The raw data average (mean) for all the ZORB Rotorua face-to-face reviews is 78.42% and is based on 120 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

80.10%

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
Izzy 7/10 1752 days 100%
Auba Mateos 10/10 2855 days 60%
May 10/10 2921 days 58%
Nathan Raymond 4/10 3183 days 31%
Raylene Luison 8/10 3191 days 46%
Tamara 10/10 3216 days 46%
Brennan Jungling 8/10 3222 days 45%
Anita Wallace 9/10 3222 days 45%
Linda and Gunther 10/10 3258 days 44%
Janek Belcher 8/10 3892 days 19%
Robert Erni 7/10 3893 days 18%
Vanessa 8/10 3912 days 18%
Olivia 8/10 3927 days 17%
Callum 8/10 3927 days 17%
David Lee 8/10 4292 days 3%
Thibault Bonenfant 10/10 4376 days 0%
Lisa Blake 8/10 4386 days 20%
Elisabeth 10/10 4667 days 20%
Asha 7/10 4705 days 19%
Mark & Beth Kaufman 8/10 4740 days 20%
Harry Simpson 10/10 4743 days 20%
kirribilliangel 7/10 4827 days 19%
Dave van Bergen 8/10 4975 days 20%
Jennifer Holloway 9/10 4985 days 20%
Julia 10/10 4994 days 20%
Isabell 7/10 4999 days 19%
Tim 6/10 5001 days 17%
WeddingMaven 9/10 5011 days 20%
Natthien Le Gall 7/10 5012 days 19%
Paap 8/10 5016 days 20%
Wouter Jansen 8/10 5016 days 20%
Kat Fleming 9/10 5025 days 20%
Invictus 8/10 5192 days 20%
heather Cardinal 3/10 5331 days 11%
Mathias Skov 6/10 5390 days 17%
jameswhite 8/10 5458 days 20%
asiacritics 6/10 5466 days 17%
nancyburns 7/10 5466 days 19%
Lesley Nixon 4/10 5476 days 13%
Ash Sturm 10/10 5496 days 20%
clairet 7/10 5575 days 19%
BryonyS 10/10 5698 days 20%
Sofie 8/10 5710 days 20%
desl 10/10 5710 days 20%
Steve Harper 7/10 5717 days 19%
Yvanna 8/10 5729 days 20%
LucyPoland 9/10 5731 days 20%
Amelie 8/10 5731 days 20%
OllyD 7/10 5739 days 19%
JessicaS1 9/10 5742 days 20%
TomC1 8/10 5743 days 20%
TrevorK 8/10 5743 days 20%
AndyK 10/10 5743 days 20%
SarahK 10/10 5743 days 20%
FrancesG 8/10 5743 days 20%
RachelR 10/10 5743 days 20%
SofiaBrazil 8/10 5743 days 20%
EmmaL 10/10 5743 days 20%
Sarah 9/10 5747 days 20%
Ed 8/10 5747 days 20%
Carmel 10/10 5751 days 20%
Amanda Williams 10/10 5751 days 20%
Cilla 10/10 5752 days 20%
MayGermany 6/10 5752 days 17%
Craig 10/10 5767 days 20%
Florian 10/10 5767 days 20%
SonjaS 8/10 5769 days 20%
Mimi 10/10 5775 days 20%
Jasmine 10/10 5776 days 20%
Rose 7/10 5776 days 19%
Liz 7/10 5783 days 19%
Bonnie Turner 5/10 5800 days 15%
Stephanie 9/10 5810 days 20%
Sonja 6/10 5815 days 17%
Helen 7/10 5823 days 19%
Liekens 7/10 5831 days 19%
Evelyn 10/10 5845 days 20%
Michelle 7/10 5885 days 19%
Chris 10/10 5885 days 20%
Dave 8/10 5901 days 20%
Anna 10/10 5908 days 20%
Ele 10/10 5935 days 20%
Brent Scanlan 8/10 6052 days 20%
Bernie 9/10 6096 days 20%
Emily Houston 8/10 6107 days 20%
Gina 8/10 6119 days 20%
Julie 7/10 6119 days 19%
Katharina 9/10 6122 days 20%
Chris 4/10 6135 days 13%
Andre Obineche 8/10 6150 days 20%
Clive 7/10 6150 days 19%
Lindsey Woosnam 9/10 6153 days 20%
Anu 5/10 6156 days 15%
Lanni 7/10 6157 days 19%
Andrew 8/10 6157 days 20%
Andrew Porter 6/10 6158 days 17%
Pete 7/10 6199 days 19%
Orla 6/10 6200 days 17%
Richard Kindgren 7/10 6202 days 19%
Miriam&Eva 6/10 6400 days 17%
HalRoberts 7/10 6422 days 19%
Will 8/10 6426 days 20%
Helen 9/10 6428 days 20%
Heather 10/10 6428 days 20%
Matt 8/10 6428 days 20%
Richard 7/10 6428 days 19%
ShoshanaAbrams 9/10 6431 days 20%
Elaine 8/10 6431 days 20%
Gwen 4/10 6434 days 13%
Matt 9/10 6438 days 20%
Gillian 6/10 6439 days 17%
Lorraine 6/10 6446 days 17%
Jack 5/10 6446 days 15%
Jen 6/10 6446 days 17%
TrineLyst 8/10 6447 days 20%
Sean 5/10 6450 days 15%
Marcus 7/10 6450 days 19%
Katie 7/10 6450 days 19%
Dan 8/10 6451 days 20%
Sarah 7/10 6451 days 19%
Emma Gareth 8/10 6462 days 20%
MariaNorman 8/10 6466 days 20%
MarcHarris 8/10 6466 days 20%
Tom 8/10 6475 days 20%
Lucy 9/10 6475 days 20%
Nissa 9/10 6475 days 20%
Suzy 7/10 6480 days 19%
Nina 6/10 6482 days 17%
Inga 5/10 6482 days 15%
FredAndersson 6/10 6486 days 17%
Cat 9/10 6488 days 20%
SallySpencer 3/10 6501 days 11%

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 ZORB Rotorua experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-4.03% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 44 days. However the ZORB Rotorua 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 ZORB Rotorua experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -3.97%
198 -3.99%
199 -4.01%
200 -4.03%
201 -4.05%
202 -4.07%
203 -4.09%

Balancing Adjustment

4.25% 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

80%

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.