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 Naked Bus.

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.

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Cymen Crick's avatar

Cymen Crick

Rankers Owner

Naked Bus

Valid Reviews

95 Valid Reviews

The Naked Bus experience has a total of 101 reviews. There are 95 valid reviews that are included when calculating the ranking score and 6 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.

Below is the distribution of ratings for the 95 valid reviews:

Rating Count Percentage
10/10 7
7%
9/10 18
19%
8/10 20
21%
7/10 13
14%
6/10 6
6%
5/10 3
3%
4/10 1
1%
3/10 3
3%
2/10 0
0%
1/10 24
25%

60.11% Average

The raw data average (mean) for all the Naked Bus valid reviews is 60.11% and is based on 95 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

58 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 95 valid reviews, the experience has 58 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 58 face-to-face reviews:

Rating Count Percentage
10/10 6
10%
9/10 16
28%
8/10 17
29%
7/10 11
19%
6/10 5
9%
5/10 2
3%
4/10 1
2%
3/10 0
0%
2/10 0
0%
1/10 0
0%

79.48% Average

The raw data average (mean) for all the Naked Bus face-to-face reviews is 79.48% and is based on 58 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

69.50%

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
Angela Hills Boughey 10/10 1938 days 100%
craig hardy 1/10 2667 days 28%
Viv stefadouros 9/10 2821 days 63%
Suzanne 1/10 2851 days 25%
kiruthika vijayakumar 1/10 2851 days 25%
Ellie Pask 1/10 2912 days 24%
Justine Langero 10/10 3035 days 55%
SR SR 1/10 3155 days 20%
Tom Anders 9/10 3244 days 46%
Estelle Coquard 7/10 3249 days 43%
Kathrin Redl 6/10 3264 days 39%
Emily Noyd 8/10 3266 days 45%
Maxim Motheus 8/10 3302 days 43%
Emil Black Christian 9/10 3302 days 44%
Charn Tiebtienrat 1/10 3337 days 17%
peter salfrais 1/10 3337 days 17%
Pierre Villaume-Odile 7/10 3360 days 39%
unhappycustomer 3/10 3429 days 21%
Brendan Carton 1/10 3430 days 16%
Funk 7/10 3551 days 32%
Calvin Shi 1/10 3643 days 12%
pat rao 1/10 3671 days 12%
Justin Little 1/10 3702 days 11%
Focalvisions 7/10 3702 days 26%
Mischelle Mills 1/10 3917 days 8%
ilove totravel 5/10 3978 days 12%
Anna Sternberg 8/10 4010 days 15%
Jan Kerkhoff 9/10 4013 days 15%
Daniel Garcia Dezgado 8/10 4018 days 14%
Maria = Moller Hansen 9/10 4020 days 15%
Gassat 9/10 4031 days 14%
Felix 4/10 4057 days 9%
Corban Hill 1/10 4068 days 5%
Cyndyl Richards 1/10 4160 days 4%
John Stroup 1/10 4160 days 4%
paulweig 8/10 4343 days 1%
Epi Gates 6/10 4343 days 1%
Andé Moreira 1/10 4374 days 0%
Stella Thoben 7/10 4376 days 0%
Anna Niesl 7/10 4380 days 19%
Kristina Wells 1/10 4433 days 8%
alastair maceachern 1/10 4433 days 8%
hirini2371 1/10 4494 days 8%
Lisa Ruhfus 10/10 4748 days 21%
Danpaley 1/10 4799 days 8%
Ashley Mckenney 8/10 4813 days 20%
Isabella Abele 7/10 4830 days 19%
smileyducky 1/10 4921 days 8%
Lennart Lundberg 7/10 5076 days 19%
Claudia Jackson and Geoffroy van Roelenbosch 7/10 5088 days 19%
Chrissy Crebas 6/10 5090 days 18%
Beth and Daisy 8/10 5093 days 20%
Tim Wright 8/10 5131 days 20%
Emma Wilkinson 8/10 5132 days 20%
Katny 8/10 5133 days 20%
SandyS 8/10 5164 days 20%
Katy 8/10 5403 days 20%
Christine T 8/10 5464 days 20%
Marcio Moretti 9/10 5480 days 21%
ohSNAP 3/10 5498 days 11%
Hokang Kim 3/10 5560 days 11%
Lindsay Brown 5/10 5570 days 16%
confederatesoldier 1/10 5590 days 8%
Annabel 1/10 5621 days 8%
miniappleses 8/10 5621 days 20%
Ozhan 8/10 5844 days 20%
Deahne 8/10 5854 days 20%
Yuko 9/10 5854 days 21%
Craig 10/10 5861 days 21%
Constance 7/10 5870 days 19%
Kristen 8/10 5877 days 20%
frank 5/10 5878 days 16%
Grace 9/10 5909 days 21%
Claudia Schmidt 9/10 5920 days 21%
Helga 6/10 5978 days 18%
Sophie 10/10 6002 days 21%
Carmen 10/10 6056 days 21%
Wolfgang 7/10 6076 days 19%
Anke 8/10 6154 days 20%
Hernando 9/10 6180 days 21%
Klaus 7/10 6184 days 19%
Corinne 8/10 6188 days 20%
Yumi 7/10 6197 days 19%
Lena 8/10 6197 days 20%
Vicky Elliott 9/10 6215 days 21%
Sophia 10/10 6217 days 21%
Reina Lohaye 9/10 6219 days 21%
Iain 9/10 6251 days 21%
Gav 6/10 6251 days 18%
Anneli 6/10 6252 days 18%
Davinia 9/10 6279 days 21%
Rob Boston 1/10 6352 days 8%
Will 9/10 6520 days 21%
clairekidd 9/10 6533 days 21%
Silke 9/10 6541 days 21%

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

Recent Reviews Adjustment

-4.14% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 53 days. However the Naked Bus 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 Naked Bus experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -4.08%
198 -4.10%
199 -4.12%
200 -4.14%
201 -4.16%
202 -4.19%
203 -4.21%

Balancing Adjustment

9.96% 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

75%

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.