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 Dolphins.

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 Dolphins

Valid Reviews

74 Valid Reviews

The Akaroa Dolphins experience has a total of 75 reviews. There are 74 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 74 valid reviews:

Rating Count Percentage
10/10 31
42%
9/10 22
30%
8/10 15
20%
7/10 3
4%
6/10 3
4%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

90.14% Average

The raw data average (mean) for all the Akaroa Dolphins valid reviews is 90.14% and is based on 74 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

59 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 74 valid reviews, the experience has 59 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 59 face-to-face reviews:

Rating Count Percentage
10/10 19
32%
9/10 20
34%
8/10 14
24%
7/10 3
5%
6/10 3
5%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

88.31% Average

The raw data average (mean) for all the Akaroa Dolphins face-to-face reviews is 88.31% and is based on 59 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

94.22%

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
Mike Dw 9/10 201 days true 112.32 100%
Nolwen 9/10 561 days true 60.22 53%
The Beans 10/10 570 days 48.68 43%
Ross D 10/10 575 days true 57.42 51%
Peter Passlack 10/10 578 days 47.36 42%
Chea Hao Wong 10/10 631 days 39.12 34%
Caroline Shaw 10/10 800 days true 22.55 19%
Pierre Mathis 10/10 811 days true 21.34 18%
Brenda Oomen 10/10 814 days true 21.01 18%
Estelle Daniel 10/10 818 days 17.16 14%
Kim-Lara 8/10 833 days true 19.05 16%
Tamara 10/10 847 days true 17.7 15%
Sandra P 10/10 875 days 12.67 10%
Marie Schmid 10/10 1202 days true 5.82 4%
Angie Cairns 10/10 1232 days true 5.77 4%
Jimmy Shaw 10/10 1485 days 4.47 3%
Wendy Hawkins 8/10 1906 days true 4.67 3%
Roger Hawkins 9/10 1906 days true 4.67 3%
Tanja Schlagermann 10/10 1913 days true 4.66 3%
Alexander Mukasa 10/10 1913 days true 4.66 3%
Erik Muchembled 10/10 1915 days true 4.65 3%
Andrea Lang 8/10 1917 days true 4.65 3%
Xtian_P 10/10 2001 days 3.76 2%
michellephil 10/10 2062 days 3.68 2%
nztintin 10/10 2276 days 3.38 2%
mandd 10/10 2276 days 3.38 2%
Orlando 9/10 2288 days true 4.04 3%
Uwe Herrdum 9/10 2292 days true 4.03 3%
Francis Corrigan 9/10 2306 days true 4.01 3%
John & Vicki 9/10 2383 days true 3.88 3%
G Tulloch 9/10 2605 days true 3.52 2%
Edward Marhi 8/10 2608 days true 3.51 2%
Robin Adair 9/10 2629 days true 3.48 2%
Sandra Schulz 9/10 2636 days true 3.47 2%
Derek Puplett 9/10 2646 days true 3.45 2%
Martin Current 9/10 2657 days true 3.43 2%
Hartmut Vogt 10/10 2658 days true 3.43 2%
allesca 9/10 2762 days 2.72 2%
Mary Van 8/10 2823 days 2.63 1%
penz 9/10 2885 days 2.55 1%
victoriauk 8/10 2915 days true 3.01 2%
Susanne Strassmann 6/10 3013 days true 2.85 2%
M Sicard 9/10 3017 days true 2.84 2%
Lasse Olesen 9/10 3028 days true 2.82 2%
Keith Wilde 8/10 3030 days true 2.82 2%
Sarah Goeckener 9/10 3107 days true 2.69 1%
katharina 10/10 3107 days true 2.69 1%
Katrin Wennin 8/10 3108 days true 2.69 1%
Thorben Thede 9/10 3109 days true 2.69 1%
Roma 10/10 3120 days true 2.67 1%
HairyHaggis 10/10 3127 days 2.22 1%
Ronny 6/10 3346 days true 2.3 1%
ChristinaV 10/10 3350 days true 2.29 1%
JudithLehr 6/10 3353 days true 2.29 1%
Steven 10/10 3357 days true 2.28 1%
StijnH 8/10 3358 days true 2.28 1%
FramiskaH 8/10 3359 days true 2.28 1%
StefanGermany1 8/10 3359 days true 2.28 1%
JaninaF 10/10 3359 days true 2.28 1%
Tatjane 9/10 3372 days true 2.26 1%
XaviG 9/10 3375 days true 2.25 1%
JesusB 7/10 3375 days true 2.25 1%
Denk 8/10 3403 days true 2.21 1%
Katie Mitchell 10/10 3492 days 1.72 1%
Ben Ackland 8/10 3728 days true 1.67 1%
Tessa McCormick 8/10 3738 days true 1.66 1%
John Beirne 10/10 4095 days true 1.07 0%
ranker_110 7/10 4099 days true 1.06 0%
Christine 10/10 4104 days true 1.05 0%
Helle 9/10 4106 days true 1.05 0%
John 7/10 4106 days true 1.05 0%
Reggie 10/10 4107 days true 1.05 0%
Dave 9/10 4118 days true 1.03 0%
Beate 8/10 4119 days true 1.03 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 Akaroa Dolphins experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-3.80% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the Akaroa Dolphins 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 Akaroa Dolphins experience has been adjusted for 190 days. Adjustments are according to the following table.

Days Adjustment
187 -3.74%
188 -3.76%
189 -3.78%
190 -3.80%
191 -3.82%
192 -3.84%
193 -3.86%

Final Ranking Score

90%

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.