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
70.92%
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 | 2483 days | 100% |
| craig hardy | 1/10 | 3212 days | 23% |
| Viv stefadouros | 9/10 | 3366 days | 52% |
| Suzanne | 1/10 | 3396 days | 19% |
| kiruthika vijayakumar | 1/10 | 3396 days | 19% |
| Ellie Pask | 1/10 | 3457 days | 17% |
| Justine Langero | 10/10 | 3580 days | 40% |
| SR SR | 1/10 | 3700 days | 12% |
| Tom Anders | 9/10 | 3789 days | 29% |
| Estelle Coquard | 7/10 | 3794 days | 27% |
| Kathrin Redl | 6/10 | 3809 days | 24% |
| Emily Noyd | 8/10 | 3811 days | 27% |
| Maxim Motheus | 8/10 | 3847 days | 25% |
| Emil Black Christian | 9/10 | 3847 days | 26% |
| Charn Tiebtienrat | 1/10 | 3882 days | 8% |
| peter salfrais | 1/10 | 3882 days | 8% |
| Pierre Villaume-Odile | 7/10 | 3905 days | 21% |
| unhappycustomer | 3/10 | 3974 days | 9% |
| Brendan Carton | 1/10 | 3975 days | 6% |
| Funk | 7/10 | 4096 days | 11% |
| Calvin Shi | 1/10 | 4188 days | 1% |
| pat rao | 1/10 | 4216 days | 1% |
| Justin Little | 1/10 | 4247 days | 0% |
| Focalvisions | 7/10 | 4247 days | 4% |
| Mischelle Mills | 1/10 | 4462 days | 8% |
| ilove totravel | 5/10 | 4523 days | 18% |
| Anna Sternberg | 8/10 | 4555 days | 24% |
| Jan Kerkhoff | 9/10 | 4558 days | 25% |
| Daniel Garcia Dezgado | 8/10 | 4563 days | 24% |
| Maria = Moller Hansen | 9/10 | 4565 days | 25% |
| Gassat | 9/10 | 4576 days | 25% |
| Felix | 4/10 | 4602 days | 15% |
| Corban Hill | 1/10 | 4613 days | 8% |
| Cyndyl Richards | 1/10 | 4705 days | 8% |
| John Stroup | 1/10 | 4705 days | 8% |
| paulweig | 8/10 | 4888 days | 24% |
| Epi Gates | 6/10 | 4888 days | 21% |
| Andé Moreira | 1/10 | 4919 days | 8% |
| Stella Thoben | 7/10 | 4921 days | 23% |
| Anna Niesl | 7/10 | 4925 days | 23% |
| Kristina Wells | 1/10 | 4978 days | 8% |
| alastair maceachern | 1/10 | 4978 days | 8% |
| hirini2371 | 1/10 | 5039 days | 8% |
| Lisa Ruhfus | 10/10 | 5293 days | 25% |
| Danpaley | 1/10 | 5344 days | 8% |
| Ashley Mckenney | 8/10 | 5358 days | 24% |
| Isabella Abele | 7/10 | 5375 days | 23% |
| smileyducky | 1/10 | 5466 days | 8% |
| Lennart Lundberg | 7/10 | 5621 days | 23% |
| Claudia Jackson and Geoffroy van Roelenbosch | 7/10 | 5633 days | 23% |
| Chrissy Crebas | 6/10 | 5635 days | 21% |
| Beth and Daisy | 8/10 | 5638 days | 24% |
| Tim Wright | 8/10 | 5676 days | 24% |
| Emma Wilkinson | 8/10 | 5677 days | 24% |
| Katny | 8/10 | 5678 days | 24% |
| SandyS | 8/10 | 5709 days | 24% |
| Katy | 8/10 | 5948 days | 24% |
| Christine T | 8/10 | 6009 days | 24% |
| Marcio Moretti | 9/10 | 6025 days | 25% |
| ohSNAP | 3/10 | 6043 days | 12% |
| Hokang Kim | 3/10 | 6105 days | 12% |
| Lindsay Brown | 5/10 | 6115 days | 18% |
| confederatesoldier | 1/10 | 6135 days | 8% |
| Annabel | 1/10 | 6166 days | 8% |
| miniappleses | 8/10 | 6166 days | 24% |
| Ozhan | 8/10 | 6389 days | 24% |
| Deahne | 8/10 | 6399 days | 24% |
| Yuko | 9/10 | 6399 days | 25% |
| Craig | 10/10 | 6406 days | 25% |
| Constance | 7/10 | 6415 days | 23% |
| Kristen | 8/10 | 6422 days | 24% |
| frank | 5/10 | 6423 days | 18% |
| Grace | 9/10 | 6454 days | 25% |
| Claudia Schmidt | 9/10 | 6465 days | 25% |
| Helga | 6/10 | 6523 days | 21% |
| Sophie | 10/10 | 6546 days | 25% |
| Carmen | 10/10 | 6601 days | 25% |
| Wolfgang | 7/10 | 6621 days | 23% |
| Anke | 8/10 | 6699 days | 24% |
| Hernando | 9/10 | 6725 days | 25% |
| Klaus | 7/10 | 6729 days | 23% |
| Corinne | 8/10 | 6733 days | 24% |
| Yumi | 7/10 | 6742 days | 23% |
| Lena | 8/10 | 6742 days | 24% |
| Vicky Elliott | 9/10 | 6760 days | 25% |
| Sophia | 10/10 | 6762 days | 25% |
| Reina Lohaye | 9/10 | 6764 days | 25% |
| Iain | 9/10 | 6796 days | 25% |
| Gav | 6/10 | 6796 days | 21% |
| Anneli | 6/10 | 6797 days | 21% |
| Davinia | 9/10 | 6824 days | 25% |
| Rob Boston | 1/10 | 6897 days | 8% |
| Will | 9/10 | 7065 days | 25% |
| clairekidd | 9/10 | 7078 days | 25% |
| Silke | 9/10 | 7086 days | 25% |
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
-2.36% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 110 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 | -2.33% |
| 198 | -2.34% |
| 199 | -2.35% |
| 200 | -2.36% |
| 201 | -2.37% |
| 202 | -2.39% |
| 203 | -2.40% |
| … | … |
Balancing Adjustment
7.84% 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
76%
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.