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 Bluff Camping Ground.

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

Bluff Camping Ground

Valid Reviews

22 Valid Reviews

The Bluff Camping Ground experience has a total of 24 reviews. There are 22 valid reviews that are included when calculating the ranking score and 2 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.

Below is the distribution of ratings for the 22 valid reviews:

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

74.55% Average

The raw data average (mean) for all the Bluff Camping Ground valid reviews is 74.55% and is based on 22 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

5 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 22 valid reviews, the experience has 5 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 5 face-to-face reviews:

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

70.00% Average

The raw data average (mean) for all the Bluff Camping Ground face-to-face reviews is 70.00% and is based on 5 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 Face-to-Face Weight Relative Weight
Gay Hamilton 4/10 264 days 70.28 97%
Jeyeol Rhyu 10/10 415 days 72.71 100%
Daphne H 8/10 537 days 51.59 71%
Teb 8/10 599 days 41.78 57%
Simon Liehout 7/10 599 days 40.03 55%
Lizzie V 9/10 810 days 17.87 25%
Jane 9/10 996 days 6.55 9%
Guillaume Deleuze 6/10 1142 days 4.07 6%
Amanda 7/10 1219 days 4.33 6%
Shelley Hancox 8/10 1319 days 4.33 6%
Stacy Cheng 10/10 1412 days 4.38 6%
Ben McGeachie 5/10 1486 days 3.43 5%
Dianne van der Wal 7/10 1681 days 3.51 5%
Sebastiaan Kemperman 4/10 1831 days 2.81 4%
Ron Clarke 7/10 1907 days 3.1 4%
Daniel Goellner 3/10 1922 days true 2.6 4%
Gal Bero 10/10 2244 days true 2.75 4%
Rhi 10/10 2333 days 2.58 4%
Anja and Katharina 9/10 2646 days true 1.96 3%
amounstephen 10/10 2881 days 1.5 2%
Celia Murphy 10/10 3296 days true 0.69 1%
Remko Ebbens 3/10 3656 days true 0.0 0%


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 Bluff Camping Ground 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 Bluff Camping Ground 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 Bluff Camping Ground 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


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.