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 Rapids Jet.

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

Rapids Jet

Valid Reviews

32 Valid Reviews

The Rapids Jet experience has a total of 33 reviews. There are 32 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 32 valid reviews:

Rating Count Percentage
10/10 9
9/10 10
8/10 8
7/10 4
6/10 0
5/10 1
4/10 0
3/10 0
2/10 0
1/10 0

86.56% Average

The raw data average (mean) for all the Rapids Jet valid reviews is 86.56% and is based on 32 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

22 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 32 valid reviews, the experience has 22 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 22 face-to-face reviews:

Rating Count Percentage
10/10 4
9/10 5
8/10 8
7/10 4
6/10 0
5/10 1
4/10 0
3/10 0
2/10 0
1/10 0

82.73% Average

The raw data average (mean) for all the Rapids Jet face-to-face reviews is 82.73% and is based on 22 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average


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
orit almog 9/10 1233 days 100%
Linnea Sahlberg 8/10 1339 days 91%
Signe Broedbaek 5/10 1945 days 56%
Therese and Matthias 8/10 1981 days 65%
Laura Pugh 9/10 2635 days 41%
Marie Lillieskold 8/10 2725 days 35%
Gary Brooks 8/10 3121 days 19%
R Laurysen 7/10 3422 days 7%
cindyd 9/10 3487 days 5%
Robert Hunter 10/10 3609 days 0%
Claudia Naier 10/10 3740 days 20%
Mr Stanley and Miss Christy 8/10 3752 days 19%
Chris White 7/10 3769 days 18%
Simon Vallis 9/10 3781 days 20%
Karen Phillips 10/10 3787 days 20%
KarenKennedy 10/10 3821 days 20%
Rob 9/10 4044 days 20%
fdrspins 10/10 4066 days 20%
Chance McGuire 10/10 4155 days 20%
Angela Stringer 10/10 4186 days 20%
Patricia Fleetwood 9/10 4308 days 20%
GemmaC 8/10 4453 days 19%
Russ C 9/10 4461 days 20%
Michael 10/10 4525 days 20%
Eline 7/10 4838 days 18%
Tony and Olivia Flynn Murphy 7/10 4866 days 18%
Millie 9/10 5171 days 20%
Bob 10/10 5171 days 20%
SueLinsk 9/10 5191 days 20%
Uri 8/10 5191 days 19%
Lucy 8/10 5224 days 19%
Nissa 9/10 5226 days 20%


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 Rapids Jet experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-2.18% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 117 days. However the Rapids Jet 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 Rapids Jet experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -2.14%
198 -2.16%
199 -2.17%
200 -2.18%
201 -2.19%
202 -2.20%
203 -2.21%

Final Ranking Score


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.