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

95.62%

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 10/10 349 days 80.7 100%
Juliane Mueller 10/10 872 days true 15.46 18%
Dave Lamb 9/10 913 days true 12.3 14%
Chris Simpson 10/10 948 days true 10.11 12%
Josefin Lind 8/10 1608 days true 5.16 5%
Herman Holmgist 10/10 1608 days true 5.16 5%
Kate Morgan 10/10 2713 days true 3.34 3%
Theta 10/10 3090 days 2.27 2%
Michael 10/10 3100 days true 2.7 2%
Canuck85 10/10 3424 days 1.81 1%
danam 10/10 3426 days true 2.17 2%
PBouwmessten 9/10 3444 days true 2.14 2%
boz 10/10 3457 days true 2.12 2%
Tom 9/10 3458 days true 2.12 2%
Tom 8/10 3458 days true 2.12 2%
Karen 9/10 3486 days true 2.07 1%
Sophie 8/10 3497 days true 2.05 1%
Richard Rodd 10/10 3503 days 1.7 1%
tarahenrys 10/10 3545 days 1.64 1%
David 9/10 3644 days true 1.81 1%
Terri Scott 10/10 3660 days true 1.78 1%
Mike Dudey 6/10 3706 days true 1.71 1%
Nick 9/10 3810 days true 1.54 1%
Robert 10/10 3816 days true 1.53 1%
Elise 10/10 3816 days true 1.53 1%
Fung 10/10 3816 days true 1.53 1%
Shannon 7/10 3816 days true 1.53 1%
Hannah Holmes 7/10 3824 days true 1.51 1%
Sue 9/10 3828 days true 1.51 1%
Gina 6/10 3833 days true 1.5 1%
Issy 9/10 3833 days true 1.5 1%
Chris 8/10 3849 days true 1.47 1%
Stacey 8/10 3849 days true 1.47 1%
Christina 10/10 4094 days 0.89 0%
Tomomi 8/10 4152 days true 0.97 0%
Dave 9/10 4154 days true 0.97 0%
Uri 10/10 4154 days true 0.97 0%
James 9/10 4154 days true 0.97 0%
Valerie 9/10 4161 days true 0.96 0%
Karen Nellist 8/10 4179 days true 0.93 0%
GillianW 8/10 4180 days true 0.93 0%
Camilla 9/10 4200 days true 0.9 0%
Twan 8/10 4200 days true 0.9 0%
PaulineTurner 10/10 4201 days true 0.89 0%
RosalindBoyes 9/10 4201 days true 0.89 0%
Paul 10/10 4202 days true 0.89 0%
Stauros 9/10 4202 days true 0.89 0%
ranker_410 10/10 4213 days true 0.87 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

-6.36% 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 364 days.

The River Valley Rafting experience has been adjusted for 318 days. Adjustments are according to the following table.

Days Adjustment
315 -6.30%
316 -6.32%
317 -6.34%
318 -6.36%
319 -6.38%
320 -6.40%
321 -6.42%

Final Ranking Score

89%

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.