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
70.84%
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 | 2463 days | 100% |
| craig hardy | 1/10 | 3193 days | 23% |
| Viv stefadouros | 9/10 | 3346 days | 52% |
| Suzanne | 1/10 | 3377 days | 19% |
| kiruthika vijayakumar | 1/10 | 3377 days | 19% |
| Ellie Pask | 1/10 | 3438 days | 17% |
| Justine Langero | 10/10 | 3560 days | 41% |
| SR SR | 1/10 | 3681 days | 12% |
| Tom Anders | 9/10 | 3769 days | 29% |
| Estelle Coquard | 7/10 | 3774 days | 27% |
| Kathrin Redl | 6/10 | 3789 days | 24% |
| Emily Noyd | 8/10 | 3791 days | 28% |
| Maxim Motheus | 8/10 | 3827 days | 26% |
| Emil Black Christian | 9/10 | 3827 days | 26% |
| Charn Tiebtienrat | 1/10 | 3863 days | 8% |
| peter salfrais | 1/10 | 3863 days | 8% |
| Pierre Villaume-Odile | 7/10 | 3885 days | 22% |
| unhappycustomer | 3/10 | 3955 days | 9% |
| Brendan Carton | 1/10 | 3955 days | 6% |
| Funk | 7/10 | 4077 days | 12% |
| Calvin Shi | 1/10 | 4169 days | 1% |
| pat rao | 1/10 | 4197 days | 1% |
| Justin Little | 1/10 | 4228 days | 0% |
| Focalvisions | 7/10 | 4228 days | 4% |
| Mischelle Mills | 1/10 | 4442 days | 8% |
| ilove totravel | 5/10 | 4503 days | 18% |
| Anna Sternberg | 8/10 | 4535 days | 24% |
| Jan Kerkhoff | 9/10 | 4538 days | 24% |
| Daniel Garcia Dezgado | 8/10 | 4543 days | 24% |
| Maria = Moller Hansen | 9/10 | 4545 days | 24% |
| Gassat | 9/10 | 4556 days | 24% |
| Felix | 4/10 | 4582 days | 15% |
| Corban Hill | 1/10 | 4593 days | 8% |
| Cyndyl Richards | 1/10 | 4685 days | 8% |
| John Stroup | 1/10 | 4685 days | 8% |
| paulweig | 8/10 | 4868 days | 24% |
| Epi Gates | 6/10 | 4868 days | 20% |
| Andé Moreira | 1/10 | 4899 days | 8% |
| Stella Thoben | 7/10 | 4901 days | 22% |
| Anna Niesl | 7/10 | 4905 days | 22% |
| Kristina Wells | 1/10 | 4958 days | 8% |
| alastair maceachern | 1/10 | 4958 days | 8% |
| hirini2371 | 1/10 | 5019 days | 8% |
| Lisa Ruhfus | 10/10 | 5273 days | 24% |
| Danpaley | 1/10 | 5324 days | 8% |
| Ashley Mckenney | 8/10 | 5338 days | 24% |
| Isabella Abele | 7/10 | 5355 days | 22% |
| smileyducky | 1/10 | 5446 days | 8% |
| Lennart Lundberg | 7/10 | 5601 days | 22% |
| Claudia Jackson and Geoffroy van Roelenbosch | 7/10 | 5613 days | 22% |
| Chrissy Crebas | 6/10 | 5615 days | 20% |
| Beth and Daisy | 8/10 | 5618 days | 24% |
| Tim Wright | 8/10 | 5656 days | 24% |
| Emma Wilkinson | 8/10 | 5657 days | 24% |
| Katny | 8/10 | 5658 days | 24% |
| SandyS | 8/10 | 5689 days | 24% |
| Katy | 8/10 | 5928 days | 24% |
| Christine T | 8/10 | 5989 days | 24% |
| Marcio Moretti | 9/10 | 6005 days | 24% |
| ohSNAP | 3/10 | 6023 days | 12% |
| Hokang Kim | 3/10 | 6085 days | 12% |
| Lindsay Brown | 5/10 | 6095 days | 18% |
| confederatesoldier | 1/10 | 6115 days | 8% |
| Annabel | 1/10 | 6146 days | 8% |
| miniappleses | 8/10 | 6146 days | 24% |
| Ozhan | 8/10 | 6369 days | 24% |
| Deahne | 8/10 | 6380 days | 24% |
| Yuko | 9/10 | 6380 days | 24% |
| Craig | 10/10 | 6386 days | 24% |
| Constance | 7/10 | 6395 days | 22% |
| Kristen | 8/10 | 6402 days | 24% |
| frank | 5/10 | 6403 days | 18% |
| Grace | 9/10 | 6434 days | 24% |
| Claudia Schmidt | 9/10 | 6445 days | 24% |
| Helga | 6/10 | 6504 days | 20% |
| Sophie | 10/10 | 6527 days | 24% |
| Carmen | 10/10 | 6581 days | 24% |
| Wolfgang | 7/10 | 6601 days | 22% |
| Anke | 8/10 | 6679 days | 24% |
| Hernando | 9/10 | 6705 days | 24% |
| Klaus | 7/10 | 6709 days | 22% |
| Corinne | 8/10 | 6713 days | 24% |
| Yumi | 7/10 | 6722 days | 22% |
| Lena | 8/10 | 6722 days | 24% |
| Vicky Elliott | 9/10 | 6740 days | 24% |
| Sophia | 10/10 | 6742 days | 24% |
| Reina Lohaye | 9/10 | 6744 days | 24% |
| Iain | 9/10 | 6776 days | 24% |
| Gav | 6/10 | 6776 days | 20% |
| Anneli | 6/10 | 6777 days | 20% |
| Davinia | 9/10 | 6804 days | 24% |
| Rob Boston | 1/10 | 6877 days | 8% |
| Will | 9/10 | 7045 days | 24% |
| clairekidd | 9/10 | 7058 days | 24% |
| Silke | 9/10 | 7066 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
-2.08% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 123 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 | -2.05% |
| 198 | -2.06% |
| 199 | -2.07% |
| 200 | -2.08% |
| 201 | -2.09% |
| 202 | -2.11% |
| 203 | -2.12% |
| … | … |
Balancing Adjustment
7.72% 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.