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 Bay of Islands Sailing.

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

Bay of Islands Sailing

Valid Reviews

18 Valid Reviews

The Bay of Islands Sailing experience has a total of 19 reviews. There are 18 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 18 valid reviews:

Rating Count Percentage
10/10 12
67%
9/10 1
6%
8/10 3
17%
7/10 1
6%
6/10 1
6%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

92.22% Average

The raw data average (mean) for all the Bay of Islands Sailing valid reviews is 92.22% and is based on 18 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

16 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 18 valid reviews, the experience has 16 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 16 face-to-face reviews:

Rating Count Percentage
10/10 10
63%
9/10 1
6%
8/10 3
19%
7/10 1
6%
6/10 1
6%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

91.25% Average

The raw data average (mean) for all the Bay of Islands Sailing face-to-face reviews is 91.25% and is based on 16 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

96.17%

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
Han Li 10/10 377 days 100%
Emely Walker 10/10 412 days 94%
Jeanne 9/10 487 days 80%
Philipp Schauerbeck 10/10 821 days 20%
Fanny DeBon 10/10 1180 days 5%
Larry Teague 10/10 1485 days 3%
Sascha Warnken 10/10 1881 days 2%
Tanja Rudolf 7/10 1900 days 3%
Eline Vakentijn 6/10 2201 days 3%
Carla Mathieu 8/10 2206 days 3%
Stephen 10/10 2942 days 1%
Richard Thompson 10/10 2943 days 1%
Roeder Grit 10/10 3019 days 1%
Hannes Ockerman 8/10 3275 days 1%
Sandra 8/10 3364 days 1%
Anke 10/10 3602 days 0%
Amanda Finger 10/10 3700 days 0%
Desiree Muri 10/10 3700 days 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 Bay of Islands Sailing experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-4.78% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the Bay of Islands Sailing 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 Bay of Islands Sailing experience has been adjusted for 239 days. Adjustments are according to the following table.

Days Adjustment
236 -4.72%
237 -4.74%
238 -4.76%
239 -4.78%
240 -4.80%
241 -4.82%
242 -4.84%

Final Ranking Score

91%

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.