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 Akaroa Harbour Nature Cruises.

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

Akaroa Harbour Nature Cruises

Valid Reviews

57 Valid Reviews

The Akaroa Harbour Nature Cruises experience has a total of 57 valid reviews. There are no 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 57 valid reviews:

Rating Count Percentage
10/10 13
23%
9/10 19
33%
8/10 14
25%
7/10 6
11%
6/10 0
0%
5/10 2
4%
4/10 1
2%
3/10 1
2%
2/10 0
0%
1/10 1
2%

82.98% Average

The raw data average (mean) for all the Akaroa Harbour Nature Cruises valid reviews is 82.98% and is based on 57 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

48 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 57 valid reviews, the experience has 48 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 48 face-to-face reviews:

Rating Count Percentage
10/10 8
17%
9/10 17
35%
8/10 14
29%
7/10 6
13%
6/10 0
0%
5/10 1
2%
4/10 1
2%
3/10 1
2%
2/10 0
0%
1/10 0
0%

83.13% Average

The raw data average (mean) for all the Akaroa Harbour Nature Cruises face-to-face reviews is 83.13% and is based on 48 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

86.12%

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
Stefano Clerici 10/10 1180 days 100%
Sue Milne 10/10 1671 days 79%
Fran and Ben 10/10 1682 days 79%
Patricia 8/10 2008 days 61%
Ceri Eaton 9/10 2037 days 64%
Thomas Zilio 4/10 2780 days 24%
JoMary Smith 9/10 2822 days 30%
Marco Schmidt 10/10 3107 days 18%
Christian Schumacher 10/10 3107 days 18%
Karin Genyn 10/10 3204 days 14%
N Zitscher 5/10 3221 days 10%
Peter Harden 9/10 3223 days 13%
Jenny McTigue 8/10 3503 days 1%
Mike & Jennie 8/10 3504 days 1%
Stefes Wencke 10/10 3506 days 1%
Johan Kroese 9/10 3533 days 0%
Herbert 8/10 3535 days 0%
Michael 9/10 3842 days 17%
Richard Dudfield 10/10 3845 days 17%
Louise van der Hyden 9/10 3857 days 17%
elmoandjoey 10/10 3949 days 17%
Tim 10/10 3979 days 17%
Conny 9/10 4158 days 17%
Victoria Slater 7/10 4198 days 15%
Risch & Seybold 9/10 4206 days 17%
Schumacher 9/10 4211 days 17%
Greg Kennedy 9/10 4271 days 17%
csziegler 10/10 4298 days 17%
stephenb 8/10 4308 days 16%
carsteng 7/10 4308 days 15%
Kathrin Thomas 9/10 4326 days 17%
james masura 10/10 4344 days 17%
Steve Drake 1/10 4405 days 11%
Andrea 7/10 4478 days 15%
stephen 9/10 4560 days 17%
NatasjaV 8/10 4576 days 16%
JimmyK 8/10 4576 days 16%
JohannaB 7/10 4577 days 15%
Peter Bowen-Simpkins 9/10 4578 days 17%
eatc 9/10 4589 days 17%
Daniel 3/10 4595 days 12%
schenk 8/10 4609 days 16%
groenewold 8/10 4623 days 16%
Karen 8/10 4630 days 16%
Ducolq 7/10 4631 days 15%
Rebekka 5/10 4631 days 13%
Mary Hamilton 10/10 4723 days 17%
Esther 8/10 4765 days 16%
Jim Summers 8/10 4807 days 16%
Stewart 8/10 4941 days 16%
angela 9/10 4941 days 17%
Bauer 7/10 4956 days 15%
Kenneth and Mette 8/10 4958 days 16%
Knol 9/10 4959 days 17%
Dorris Schwarz 9/10 5004 days 17%
Eleanor Adams 9/10 5050 days 17%
Fred 9/10 5288 days 17%

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 Akaroa Harbour Nature Cruises experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-3.10% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 72 days. However the Akaroa Harbour Nature Cruises 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 Akaroa Harbour Nature Cruises experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -3.05%
198 -3.06%
199 -3.08%
200 -3.10%
201 -3.11%
202 -3.13%
203 -3.14%

Final Ranking Score

83%

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.