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

86.27%

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 1043 days 100%
Sue Milne 10/10 1534 days 74%
Fran and Ben 10/10 1545 days 74%
Patricia 8/10 1871 days 57%
Ceri Eaton 9/10 1900 days 60%
Thomas Zilio 4/10 2643 days 22%
JoMary Smith 9/10 2685 days 29%
Marco Schmidt 10/10 2970 days 17%
Christian Schumacher 10/10 2970 days 17%
Karin Genyn 10/10 3067 days 14%
N Zitscher 5/10 3084 days 9%
Peter Harden 9/10 3086 days 13%
Jenny McTigue 8/10 3366 days 1%
Mike & Jennie 8/10 3367 days 1%
Stefes Wencke 10/10 3369 days 2%
Johan Kroese 9/10 3396 days 1%
Herbert 8/10 3398 days 0%
Michael 9/10 3705 days 11%
Richard Dudfield 10/10 3708 days 11%
Louise van der Hyden 9/10 3720 days 11%
elmoandjoey 10/10 3812 days 11%
Tim 10/10 3842 days 11%
Conny 9/10 4021 days 11%
Victoria Slater 7/10 4061 days 9%
Risch & Seybold 9/10 4069 days 11%
Schumacher 9/10 4074 days 11%
Greg Kennedy 9/10 4134 days 11%
csziegler 10/10 4161 days 11%
stephenb 8/10 4171 days 10%
carsteng 7/10 4171 days 9%
Kathrin Thomas 9/10 4189 days 11%
james masura 10/10 4207 days 11%
Steve Drake 1/10 4268 days 5%
Andrea 7/10 4341 days 9%
stephen 9/10 4423 days 11%
NatasjaV 8/10 4439 days 10%
JimmyK 8/10 4439 days 10%
JohannaB 7/10 4440 days 9%
Peter Bowen-Simpkins 9/10 4441 days 11%
eatc 9/10 4452 days 11%
Daniel 3/10 4458 days 6%
schenk 8/10 4472 days 10%
groenewold 8/10 4486 days 10%
Karen 8/10 4492 days 10%
Ducolq 7/10 4493 days 9%
Rebekka 5/10 4493 days 7%
Mary Hamilton 10/10 4586 days 11%
Esther 8/10 4628 days 10%
Jim Summers 8/10 4670 days 10%
Stewart 8/10 4804 days 10%
angela 9/10 4804 days 11%
Bauer 7/10 4819 days 9%
Kenneth and Mette 8/10 4821 days 10%
Knol 9/10 4822 days 11%
Dorris Schwarz 9/10 4867 days 11%
Eleanor Adams 9/10 4913 days 11%
Fred 9/10 5151 days 11%

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

-2.93% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 85 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 -2.89%
198 -2.90%
199 -2.92%
200 -2.93%
201 -2.95%
202 -2.96%
203 -2.98%

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.