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 CharterLink.

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

CharterLink

Valid Reviews

67 Valid Reviews

The CharterLink experience has a total of 67 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.

Within these 67 valid reviews, the experience has 3 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 67 valid reviews:

Rating Count Percentage
10/10 49
73%
9/10 15
22%
8/10 3
4%
7/10 0
0%
6/10 0
0%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

96.87% Average

The raw data average (mean) for all the CharterLink valid reviews is 96.87% and is based on 67 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

96.97%

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
Val Mackie 10/10 2211 days 100%
steve cooper 10/10 2486 days 81%
Myles Henaghan 9/10 2486 days 81%
David Jones 9/10 2517 days 79%
lisa Mackay 10/10 2576 days 74%
Steve Barham 10/10 2576 days 74%
Karl Risch 10/10 2576 days 74%
James Mackenzie 9/10 2883 days 53%
Stu Thomas 10/10 2883 days 53%
Eric Sinton 10/10 2911 days 51%
Johannes Markus 9/10 2940 days 29%
Peter Haarhaus 10/10 2942 days 49%
Tina Hejrskov 10/10 2942 days 49%
Lynette Ashby 10/10 2942 days 49%
Andy Campbell 8/10 2942 days 46%
Matt A 10/10 2942 days 49%
suzanne_b 9/10 2973 days 47%
simon_k 8/10 3248 days 26%
greg payne 9/10 3248 days 28%
Peter Trezise 10/10 3248 days 28%
Brian Walsh 9/10 3248 days 28%
Suzib23 10/10 3307 days 23%
Chris Rackham 10/10 3307 days 23%
Roger Richardson 10/10 3307 days 23%
grudels 10/10 3307 days 23%
Shane Armstrong 10/10 3307 days 23%
Fraser_Hurrell 10/10 3338 days 21%
lonetelemarker 10/10 3460 days 13%
JaredL 10/10 3582 days 4%
HyattBrowns 10/10 3582 days 4%
brahms 10/10 3613 days 2%
BrentWW 10/10 3613 days 2%
paul_thompson_nz 9/10 3613 days 2%
wthomson 9/10 3642 days 0%
greg 10/10 3642 days 0%
geoffgage 9/10 3642 days 0%
Adam Clatworthy 10/10 3979 days 35%
Frazer 10/10 3979 days 35%
Warwick_M 9/10 3979 days 35%
ziemkes 10/10 4007 days 35%
mark_elley 10/10 4038 days 35%
NickC 10/10 4038 days 35%
boycejw 10/10 4038 days 35%
OKRobbo 10/10 4038 days 35%
LOUIS485 10/10 4069 days 35%
Craig_Climo 10/10 4283 days 35%
Chris Renall 10/10 4313 days 35%
MedaryB 9/10 4313 days 35%
Jakped 10/10 4313 days 35%
JohnWOLFF 8/10 4313 days 33%
Christina Martin 10/10 4344 days 35%
Chris Shirley 10/10 4344 days 35%
Eric Sinton 10/10 4344 days 35%
noelburns 10/10 4344 days 35%
machonchon 10/10 4372 days 35%
pbutterworth 10/10 4372 days 35%
hendrik gottschalk 10/10 4403 days 35%
Gareth Ayre 10/10 4403 days 35%
gemmav 9/10 4418 days 21%
brampa 10/10 4495 days 35%
Stiernacken 10/10 4648 days 35%
Goodman 9/10 4648 days 35%
Jim_001 10/10 4689 days 21%
Childers 10/10 4690 days 35%
hauraki 10/10 4693 days 35%
johnhargs30 9/10 4709 days 35%
Kate Bilham 10/10 4709 days 35%

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 CharterLink experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-4.11% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 47 days. However the CharterLink 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 CharterLink experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -4.04%
198 -4.07%
199 -4.09%
200 -4.11%
201 -4.13%
202 -4.15%
203 -4.17%

Final Ranking Score

93%

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.