Hi, 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.
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
69.60%
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 | 2282 days | 100% |
| craig hardy | 1/10 | 3011 days | 26% |
| Viv stefadouros | 9/10 | 3165 days | 57% |
| Suzanne | 1/10 | 3195 days | 23% |
| kiruthika vijayakumar | 1/10 | 3195 days | 23% |
| Ellie Pask | 1/10 | 3256 days | 22% |
| Justine Langero | 10/10 | 3379 days | 48% |
| SR SR | 1/10 | 3499 days | 17% |
| Tom Anders | 9/10 | 3588 days | 37% |
| Estelle Coquard | 7/10 | 3593 days | 35% |
| Kathrin Redl | 6/10 | 3608 days | 32% |
| Emily Noyd | 8/10 | 3610 days | 36% |
| Maxim Motheus | 8/10 | 3646 days | 34% |
| Emil Black Christian | 9/10 | 3646 days | 34% |
| Charn Tiebtienrat | 1/10 | 3681 days | 13% |
| peter salfrais | 1/10 | 3681 days | 13% |
| Pierre Villaume-Odile | 7/10 | 3704 days | 30% |
| unhappycustomer | 3/10 | 3773 days | 16% |
| Brendan Carton | 1/10 | 3774 days | 12% |
| Funk | 7/10 | 3895 days | 21% |
| Calvin Shi | 1/10 | 3987 days | 7% |
| pat rao | 1/10 | 4015 days | 7% |
| Justin Little | 1/10 | 4046 days | 6% |
| Focalvisions | 7/10 | 4046 days | 15% |
| Mischelle Mills | 1/10 | 4261 days | 2% |
| ilove totravel | 5/10 | 4322 days | 2% |
| Anna Sternberg | 8/10 | 4354 days | 1% |
| Jan Kerkhoff | 9/10 | 4357 days | 1% |
| Daniel Garcia Dezgado | 8/10 | 4362 days | 1% |
| Maria = Moller Hansen | 9/10 | 4364 days | 1% |
| Gassat | 9/10 | 4375 days | 0% |
| Felix | 4/10 | 4401 days | 16% |
| Corban Hill | 1/10 | 4412 days | 10% |
| Cyndyl Richards | 1/10 | 4504 days | 10% |
| John Stroup | 1/10 | 4504 days | 10% |
| paulweig | 8/10 | 4687 days | 24% |
| Epi Gates | 6/10 | 4687 days | 21% |
| Andé Moreira | 1/10 | 4718 days | 10% |
| Stella Thoben | 7/10 | 4720 days | 22% |
| Anna Niesl | 7/10 | 4724 days | 22% |
| Kristina Wells | 1/10 | 4777 days | 10% |
| alastair maceachern | 1/10 | 4777 days | 10% |
| hirini2371 | 1/10 | 4838 days | 10% |
| Lisa Ruhfus | 10/10 | 5092 days | 24% |
| Danpaley | 1/10 | 5143 days | 10% |
| Ashley Mckenney | 8/10 | 5157 days | 24% |
| Isabella Abele | 7/10 | 5174 days | 22% |
| smileyducky | 1/10 | 5265 days | 10% |
| Lennart Lundberg | 7/10 | 5420 days | 22% |
| Claudia Jackson and Geoffroy van Roelenbosch | 7/10 | 5432 days | 22% |
| Chrissy Crebas | 6/10 | 5434 days | 21% |
| Beth and Daisy | 8/10 | 5437 days | 24% |
| Tim Wright | 8/10 | 5475 days | 24% |
| Emma Wilkinson | 8/10 | 5476 days | 24% |
| Katny | 8/10 | 5477 days | 24% |
| SandyS | 8/10 | 5508 days | 24% |
| Katy | 8/10 | 5747 days | 24% |
| Christine T | 8/10 | 5808 days | 24% |
| Marcio Moretti | 9/10 | 5824 days | 24% |
| ohSNAP | 3/10 | 5842 days | 13% |
| Hokang Kim | 3/10 | 5904 days | 13% |
| Lindsay Brown | 5/10 | 5914 days | 18% |
| confederatesoldier | 1/10 | 5934 days | 10% |
| Annabel | 1/10 | 5965 days | 10% |
| miniappleses | 8/10 | 5965 days | 24% |
| Ozhan | 8/10 | 6188 days | 24% |
| Deahne | 8/10 | 6198 days | 24% |
| Yuko | 9/10 | 6198 days | 24% |
| Craig | 10/10 | 6205 days | 24% |
| Constance | 7/10 | 6214 days | 22% |
| Kristen | 8/10 | 6221 days | 24% |
| frank | 5/10 | 6222 days | 18% |
| Grace | 9/10 | 6253 days | 24% |
| Claudia Schmidt | 9/10 | 6264 days | 24% |
| Helga | 6/10 | 6322 days | 21% |
| Sophie | 10/10 | 6345 days | 24% |
| Carmen | 10/10 | 6400 days | 24% |
| Wolfgang | 7/10 | 6420 days | 22% |
| Anke | 8/10 | 6498 days | 24% |
| Hernando | 9/10 | 6524 days | 24% |
| Klaus | 7/10 | 6528 days | 22% |
| Corinne | 8/10 | 6532 days | 24% |
| Yumi | 7/10 | 6541 days | 22% |
| Lena | 8/10 | 6541 days | 24% |
| Vicky Elliott | 9/10 | 6559 days | 24% |
| Sophia | 10/10 | 6561 days | 24% |
| Reina Lohaye | 9/10 | 6563 days | 24% |
| Iain | 9/10 | 6595 days | 24% |
| Gav | 6/10 | 6595 days | 21% |
| Anneli | 6/10 | 6596 days | 21% |
| Davinia | 9/10 | 6623 days | 24% |
| Rob Boston | 1/10 | 6696 days | 10% |
| Will | 9/10 | 6864 days | 24% |
| clairekidd | 9/10 | 6877 days | 24% |
| Silke | 9/10 | 6885 days | 24% |
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 49 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 | -4.18% |
| 203 | -4.20% |
| … | … |
Balancing Adjustment
9.89% 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.