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

96.63%

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
Val Mackie 10/10 1116 days 4.97 100%
steve cooper 10/10 1391 days 4.59 89%
Myles Henaghan 9/10 1391 days 4.59 89%
David Jones 9/10 1422 days 4.55 88%
lisa Mackay 10/10 1481 days 4.47 85%
Steve Barham 10/10 1481 days 4.47 85%
Karl Risch 10/10 1481 days 4.47 85%
James Mackenzie 9/10 1787 days 4.05 73%
Stu Thomas 10/10 1787 days 4.05 73%
Eric Sinton 10/10 1815 days 4.01 72%
Johannes Markus 9/10 1844 days true 4.77 94%
Peter Haarhaus 10/10 1846 days 3.97 71%
Tina Hejrskov 10/10 1846 days 3.97 71%
Lynette Ashby 10/10 1846 days 3.97 71%
Andy Campbell 8/10 1846 days 3.97 71%
Matt A 10/10 1846 days 3.97 71%
suzanne_b 9/10 1877 days 3.93 70%
simon_k 8/10 2152 days 3.55 59%
greg payne 9/10 2152 days 3.55 59%
Peter Trezise 10/10 2152 days 3.55 59%
Brian Walsh 9/10 2152 days 3.55 59%
Suzib23 10/10 2211 days 3.47 56%
Chris Rackham 10/10 2211 days 3.47 56%
Roger Richardson 10/10 2211 days 3.47 56%
grudels 10/10 2211 days 3.47 56%
Shane Armstrong 10/10 2211 days 3.47 56%
Fraser_Hurrell 10/10 2242 days 3.43 55%
lonetelemarker 10/10 2364 days 3.26 50%
JaredL 10/10 2486 days 3.09 45%
HyattBrowns 10/10 2486 days 3.09 45%
brahms 10/10 2517 days 3.05 44%
BrentWW 10/10 2517 days 3.05 44%
paul_thompson_nz 9/10 2517 days 3.05 44%
wthomson 9/10 2546 days 3.01 43%
greg 10/10 2546 days 3.01 43%
geoffgage 9/10 2546 days 3.01 43%
Adam Clatworthy 10/10 2883 days 2.55 29%
Frazer 10/10 2883 days 2.55 29%
Warwick_M 9/10 2883 days 2.55 29%
ziemkes 10/10 2911 days 2.51 28%
mark_elley 10/10 2942 days 2.47 27%
NickC 10/10 2942 days 2.47 27%
boycejw 10/10 2942 days 2.47 27%
OKRobbo 10/10 2942 days 2.47 27%
LOUIS485 10/10 2973 days 2.43 26%
Craig_Climo 10/10 3187 days 2.13 17%
Chris Renall 10/10 3217 days 2.09 16%
MedaryB 9/10 3217 days 2.09 16%
Jakped 10/10 3217 days 2.09 16%
JohnWOLFF 8/10 3217 days 2.09 16%
Christina Martin 10/10 3248 days 2.05 15%
Chris Shirley 10/10 3248 days 2.05 15%
Eric Sinton 10/10 3248 days 2.05 15%
noelburns 10/10 3248 days 2.05 15%
machonchon 10/10 3276 days 2.01 13%
pbutterworth 10/10 3276 days 2.01 13%
hendrik gottschalk 10/10 3307 days 1.97 12%
Gareth Ayre 10/10 3307 days 1.97 12%
gemmav 9/10 3322 days true 2.34 23%
brampa 10/10 3399 days 1.84 9%
Stiernacken 10/10 3552 days 1.63 2%
Goodman 9/10 3552 days 1.63 2%
Jim_001 10/10 3593 days true 1.89 10%
Childers 10/10 3594 days 1.58 1%
hauraki 10/10 3597 days 1.57 1%
johnhargs30 9/10 3613 days 1.55 0%
Kate Bilham 10/10 3613 days 1.55 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 CharterLink experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-7.28% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 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 364 days.

The CharterLink experience has been adjusted for 364 days. Adjustments are according to the following table.

Days Adjustment
361 -7.22%
362 -7.24%
363 -7.26%
364 -7.28%
365 -7.30%
366 -7.32%
367 -7.34%

Final Ranking Score

89%

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.