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 Rankers Booking Service.

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

Rankers Booking Service

Valid Reviews

50 Valid Reviews

The Rankers Booking Service experience has a total of 51 reviews. There are 50 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 50 valid reviews:

Rating Count Percentage
10/10 30
60%
9/10 11
22%
8/10 7
14%
7/10 1
2%
6/10 1
2%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

93.60% Average

The raw data average (mean) for all the Rankers Booking Service valid reviews is 93.60% and is based on 50 valid reviews. This value is not used to calculate the ranking score and it only provided here as a comparison to the weighted average.

Weighted Average

93.88%

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
Irene Lanser 8/10 22 days 94.93 81%
Susan S 8/10 22 days 94.93 81%
Sarah Peres 10/10 22 days 99.92 100%
Brian Webber 10/10 22 days 99.92 100%
Henry Schenker 10/10 22 days 99.92 100%
Susan Boyton 10/10 53 days 99.55 99%
jeffrey goebel 9/10 53 days 99.55 99%
Charlotte Amouret 8/10 53 days 94.58 80%
Sophie ROUX 10/10 84 days 98.88 96%
Heather McDonald 9/10 84 days 98.88 96%
Debra Tolic 10/10 84 days 98.88 96%
Chee Kuan Lim 9/10 84 days 98.88 96%
G Visser 10/10 84 days 98.88 96%
DEBBIE LAMBERT 10/10 84 days 98.88 96%
Gina DAVIS 10/10 84 days 98.88 96%
Paul Mullooly 10/10 84 days 98.88 96%
Emily Joyce 9/10 114 days 97.94 92%
Sergio Meana Martinez 10/10 114 days 97.94 92%
Evelyn Toh 10/10 114 days 97.94 92%
Jean-Luc Brocard 9/10 114 days 97.94 92%
Deborah Vitali 8/10 145 days 91.83 69%
Jeramy Janoski 10/10 145 days 96.67 88%
Daniel Benjamin 10/10 145 days 96.67 88%
Sarah Bailey 10/10 145 days 96.67 88%
Michael Jost 10/10 145 days 96.67 88%
Van Weigel 10/10 145 days 96.67 88%
Lizzie Lacey-Brennan 10/10 145 days 96.67 88%
Chia Shen Cheng 10/10 174 days 95.2 82%
Gilbert Deveaux 10/10 174 days 95.2 82%
Kathryn Conrad 10/10 175 days 95.15 82%
Fannie Bernier 9/10 175 days 95.15 82%
hannah murray 8/10 175 days 90.39 63%
Whitney Bak 10/10 175 days 95.15 82%
Sandra Cabrera 9/10 175 days 95.15 82%
Wendy Leung 10/10 175 days 95.15 82%
Adrian Trumper 9/10 175 days 95.15 82%
Marcos Tosto 7/10 175 days 86.58 49%
John van Herk 9/10 175 days 95.15 82%
Teun Steur 9/10 175 days 95.15 82%
JOSY ANANTA WIJAYA 10/10 206 days 93.28 75%
Citra Lestari 10/10 206 days 93.28 75%
wendy legge 10/10 206 days 93.28 75%
ALEX RIVERO 9/10 206 days 93.28 75%
David Caravati 10/10 206 days 93.28 75%
F B 8/10 234 days 86.76 50%
MERVYN ADAMS 6/10 264 days 73.83 0%
Chan Hoe Yip 8/10 295 days 81.9 31%
Ana Segota 10/10 325 days 83.26 36%
Mark Lechner 10/10 325 days 83.26 36%
Richard Tallack 10/10 356 days 79.92 23%

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 Rankers Booking Service experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-0.10% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the Rankers Booking Service 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 199 days.

The Rankers Booking Service experience has been adjusted for 5 days. Adjustments are according to the following table.

Days Adjustment
2 -0.04%
3 -0.06%
4 -0.08%
5 -0.10%
6 -0.12%
7 -0.14%
8 -0.16%

Final Ranking Score

94%

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.