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 Kerr Bay Campsite.

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

Kerr Bay Campsite

Valid Reviews

44 Valid Reviews

The Kerr Bay Campsite experience has a total of 45 reviews. There are 44 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 44 valid reviews:

Rating Count Percentage
10/10 9
9/10 9
8/10 13
7/10 6
6/10 4
5/10 1
4/10 0
3/10 0
2/10 1
1/10 1

79.32% Average

The raw data average (mean) for all the Kerr Bay Campsite valid reviews is 79.32% and is based on 44 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

23 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 44 valid reviews, the experience has 23 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 23 face-to-face reviews:

Rating Count Percentage
10/10 4
9/10 4
8/10 11
7/10 1
6/10 2
5/10 0
4/10 0
3/10 0
2/10 1
1/10 0

80.43% Average

The raw data average (mean) for all the Kerr Bay Campsite face-to-face reviews is 80.43% and is based on 23 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
Sandy Bao 10/10 245 days 100%
Valg 10/10 304 days 94%
Pablo Boris 9/10 335 days 91%
Ying 10/10 457 days 74%
Kysha 10/10 641 days 42%
lisa 9/10 701 days 33%
Sophi 8/10 732 days 27%
Vanessa 7/10 1007 days 6%
Silvia Romeiro 7/10 1544 days 4%
Geoff Steele 10/10 1552 days 4%
Adam Yates 9/10 1699 days 4%
Rosanna Leeming 7/10 1752 days 4%
Kath Tee 1/10 1795 days 3%
Howard Kestrel 7/10 2080 days 3%
Job Berk 5/10 2179 days 2%
Agata Jose 9/10 2284 days 3%
Harriet Bramley 6/10 2303 days 2%
Tomáš Bžatek 7/10 2438 days 2%
Andrew Strother 9/10 2526 days 2%
Lorcan Lennon 8/10 2569 days 2%
Kathy Hart 6/10 2772 days 1%
Sally Schist 6/10 2856 days 1%
Andrew Cattanach 8/10 2892 days 1%
Yvonne Horpershoeh 8/10 2900 days 1%
Ken Richardson 8/10 3191 days 1%
Stu Murray 10/10 3198 days 1%
Rob Cadmus 8/10 3201 days 1%
Kate Glover 6/10 3201 days 1%
Mags Adams 2/10 3578 days 0%
Annette May 9/10 3584 days 0%
Steve Eley 10/10 3663 days 1%
Lindsey Clough 8/10 3907 days 1%
Jorge Martinez Gacio 7/10 3909 days 1%
Christoph & Maria 9/10 3919 days 1%
Brendan Dunn 9/10 3929 days 1%
Eva Bock 8/10 3932 days 1%
Edwards 8/10 3936 days 1%
Derek McLoughlin 10/10 3936 days 1%
Tony B 8/10 4275 days 1%
Hugli 8/10 4327 days 1%
Schubert, Wolfgang & Claudia 8/10 4327 days 1%
susanl 10/10 4375 days 1%
richards1 9/10 4509 days 1%
RokP 8/10 4661 days 1%


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 Kerr Bay Campsite experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-4.07% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 43 days. However the Kerr Bay Campsite 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 Kerr Bay Campsite experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -4.01%
198 -4.03%
199 -4.05%
200 -4.07%
201 -4.09%
202 -4.11%
203 -4.13%

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.