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 River Valley Rafting.

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

River Valley Rafting

Valid Reviews

48 Valid Reviews

The River Valley Rafting experience has a total of 49 reviews. There are 48 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 48 valid reviews:

Rating Count Percentage
10/10 21
44%
9/10 14
29%
8/10 9
19%
7/10 2
4%
6/10 2
4%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

90.42% Average

The raw data average (mean) for all the River Valley Rafting valid reviews is 90.42% and is based on 48 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

42 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 48 valid reviews, the experience has 42 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 42 face-to-face reviews:

Rating Count Percentage
10/10 15
36%
9/10 14
33%
8/10 9
21%
7/10 2
5%
6/10 2
5%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

89.05% Average

The raw data average (mean) for all the River Valley Rafting face-to-face reviews is 89.05% and is based on 42 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

97.46%

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 Face-to-Face Weight Relative Weight
R R 10/10 746 days 24.3 100%
Juliane Mueller 10/10 1270 days true 4.7 19%
Dave Lamb 9/10 1311 days true 4.63 19%
Chris Simpson 10/10 1346 days true 4.57 19%
Josefin Lind 8/10 2006 days true 3.27 13%
Herman Holmgist 10/10 2006 days true 3.44 14%
Kate Morgan 10/10 3111 days true 1.55 6%
Theta 10/10 3488 days 0.9 4%
Michael 10/10 3498 days true 0.89 4%
Canuck85 10/10 3822 days 0.33 1%
danam 10/10 3823 days true 0.33 1%
PBouwmessten 9/10 3842 days true 0.3 1%
boz 10/10 3854 days true 0.28 1%
Tom 9/10 3855 days true 0.27 1%
Tom 8/10 3855 days true 0.26 1%
Karen 9/10 3884 days true 0.22 1%
Sophie 8/10 3894 days true 0.2 1%
Richard Rodd 10/10 3900 days 0.2 1%
tarahenrys 10/10 3943 days 0.12 1%
David 9/10 4041 days true 0.0 0%
Terri Scott 10/10 4057 days true 0.0 0%
Mike Dudey 6/10 4103 days true 0.0 0%
Nick 9/10 4208 days true 0.0 0%
Robert 10/10 4214 days true 0.0 0%
Elise 10/10 4214 days true 0.0 0%
Fung 10/10 4214 days true 0.0 0%
Shannon 7/10 4214 days true 0.0 0%
Hannah Holmes 7/10 4222 days true 0.0 0%
Sue 9/10 4226 days true 0.0 0%
Gina 6/10 4231 days true 0.0 0%
Issy 9/10 4231 days true 0.0 0%
Chris 8/10 4247 days true 0.0 0%
Stacey 8/10 4247 days true 0.0 0%
Christina 10/10 4492 days 0.0 0%
Tomomi 8/10 4550 days true 0.0 0%
Dave 9/10 4552 days true 0.0 0%
Uri 10/10 4552 days true 0.0 0%
James 9/10 4552 days true 0.0 0%
Valerie 9/10 4559 days true 0.0 0%
Karen Nellist 8/10 4577 days true 0.0 0%
GillianW 8/10 4578 days true 0.0 0%
Camilla 9/10 4598 days true 0.0 0%
Twan 8/10 4598 days true 0.0 0%
PaulineTurner 10/10 4599 days true 0.0 0%
RosalindBoyes 9/10 4599 days true 0.0 0%
Paul 10/10 4600 days true 0.0 0%
Stauros 9/10 4600 days true 0.0 0%
ranker_410 10/10 4611 days true 0.0 0%

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 River Valley Rafting experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-3.98% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the River Valley Rafting 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 199 days.

The River Valley Rafting experience has been adjusted for 199 days. Adjustments are according to the following table.

Days Adjustment
196 -3.92%
197 -3.94%
198 -3.96%
199 -3.98%
200 -4.00%
201 -4.02%
202 -4.04%

Final Ranking Score

93%

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.