Ranking Score Explained

G'day, 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.

Cymen Crick's avatar

Cymen Crick

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

97.20%

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 3264 days 100%
steve cooper 10/10 3539 days 75%
Myles Henaghan 9/10 3539 days 74%
David Jones 9/10 3570 days 71%
lisa Mackay 10/10 3629 days 67%
Steve Barham 10/10 3629 days 67%
Karl Risch 10/10 3629 days 67%
James Mackenzie 9/10 3935 days 38%
Stu Thomas 10/10 3935 days 39%
Eric Sinton 10/10 3963 days 36%
Johannes Markus 9/10 3992 days 19%
Peter Haarhaus 10/10 3994 days 33%
Tina Hejrskov 10/10 3994 days 33%
Lynette Ashby 10/10 3994 days 33%
Andy Campbell 8/10 3994 days 33%
Matt A 10/10 3994 days 33%
suzanne_b 9/10 4025 days 30%
simon_k 8/10 4300 days 5%
greg payne 9/10 4300 days 5%
Peter Trezise 10/10 4300 days 5%
Brian Walsh 9/10 4300 days 5%
Suzib23 10/10 4359 days 0%
Chris Rackham 10/10 4359 days 0%
Roger Richardson 10/10 4359 days 0%
grudels 10/10 4359 days 0%
Shane Armstrong 10/10 4359 days 0%
Fraser_Hurrell 10/10 4390 days 45%
lonetelemarker 10/10 4512 days 45%
JaredL 10/10 4634 days 45%
HyattBrowns 10/10 4634 days 45%
brahms 10/10 4665 days 45%
BrentWW 10/10 4665 days 45%
paul_thompson_nz 9/10 4665 days 44%
wthomson 9/10 4694 days 44%
greg 10/10 4694 days 45%
geoffgage 9/10 4694 days 44%
Adam Clatworthy 10/10 5031 days 45%
Frazer 10/10 5031 days 45%
Warwick_M 9/10 5031 days 44%
ziemkes 10/10 5059 days 45%
mark_elley 10/10 5090 days 45%
NickC 10/10 5090 days 45%
boycejw 10/10 5090 days 45%
OKRobbo 10/10 5090 days 45%
LOUIS485 10/10 5121 days 45%
Craig_Climo 10/10 5335 days 45%
Chris Renall 10/10 5365 days 45%
MedaryB 9/10 5365 days 44%
Jakped 10/10 5365 days 45%
JohnWOLFF 8/10 5365 days 44%
Christina Martin 10/10 5396 days 45%
Chris Shirley 10/10 5396 days 45%
Eric Sinton 10/10 5396 days 45%
noelburns 10/10 5396 days 45%
machonchon 10/10 5424 days 45%
pbutterworth 10/10 5424 days 45%
hendrik gottschalk 10/10 5455 days 45%
Gareth Ayre 10/10 5455 days 45%
gemmav 9/10 5470 days 26%
brampa 10/10 5547 days 45%
Stiernacken 10/10 5700 days 45%
Goodman 9/10 5700 days 44%
Jim_001 10/10 5742 days 26%
Childers 10/10 5743 days 45%
hauraki 10/10 5745 days 45%
johnhargs30 9/10 5761 days 44%
Kate Bilham 10/10 5761 days 45%

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

-4.07% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 42 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 -4.01%
198 -4.03%
199 -4.05%
200 -4.07%
201 -4.09%
202 -4.11%
203 -4.13%

Balancing Adjustment

0.62% Adjustment

Every experience's review score is adjusted to balance out the disproportional number of negative reviews that are contributed.

You won't be surprised to learn that disgruntled customers are more likely to leave a review than happy ones. They are motivated to share their experience and warn others. We consider this a good thing and it's why reading the reviews is important. However we've learned it can misrepresent the experience in a more overall sense.

We apply a balancing adjustment to counteract this effect and ensure the ranking score is a more fair representation of the experience. This adjustment is applied equally to all experiences.

Final Ranking Score

94%

The final ranking score once any adjustments, ratings, and rounding has been applied. This value is recalculated each day and a short rolling average is applied. Therefore it may not be precisely accurate based on the other values presented.