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.
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
69.40%
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 | 1918 days | 100% |
| craig hardy | 1/10 | 2647 days | 28% |
| Viv stefadouros | 9/10 | 2801 days | 63% |
| Suzanne | 1/10 | 2831 days | 25% |
| kiruthika vijayakumar | 1/10 | 2831 days | 25% |
| Ellie Pask | 1/10 | 2892 days | 24% |
| Justine Langero | 10/10 | 3015 days | 55% |
| SR SR | 1/10 | 3135 days | 20% |
| Tom Anders | 9/10 | 3224 days | 46% |
| Estelle Coquard | 7/10 | 3229 days | 43% |
| Kathrin Redl | 6/10 | 3244 days | 39% |
| Emily Noyd | 8/10 | 3246 days | 45% |
| Maxim Motheus | 8/10 | 3282 days | 43% |
| Emil Black Christian | 9/10 | 3282 days | 44% |
| Charn Tiebtienrat | 1/10 | 3317 days | 17% |
| peter salfrais | 1/10 | 3317 days | 17% |
| Pierre Villaume-Odile | 7/10 | 3340 days | 39% |
| unhappycustomer | 3/10 | 3409 days | 21% |
| Brendan Carton | 1/10 | 3410 days | 16% |
| Funk | 7/10 | 3531 days | 32% |
| Calvin Shi | 1/10 | 3623 days | 12% |
| pat rao | 1/10 | 3651 days | 12% |
| Justin Little | 1/10 | 3682 days | 11% |
| Focalvisions | 7/10 | 3682 days | 26% |
| Mischelle Mills | 1/10 | 3897 days | 8% |
| ilove totravel | 5/10 | 3958 days | 13% |
| Anna Sternberg | 8/10 | 3990 days | 15% |
| Jan Kerkhoff | 9/10 | 3993 days | 15% |
| Daniel Garcia Dezgado | 8/10 | 3998 days | 15% |
| Maria = Moller Hansen | 9/10 | 4000 days | 15% |
| Gassat | 9/10 | 4011 days | 14% |
| Felix | 4/10 | 4037 days | 9% |
| Corban Hill | 1/10 | 4048 days | 5% |
| Cyndyl Richards | 1/10 | 4140 days | 4% |
| John Stroup | 1/10 | 4140 days | 4% |
| paulweig | 8/10 | 4323 days | 2% |
| Epi Gates | 6/10 | 4323 days | 2% |
| Andé Moreira | 1/10 | 4354 days | 0% |
| Stella Thoben | 7/10 | 4356 days | 0% |
| Anna Niesl | 7/10 | 4360 days | 0% |
| Kristina Wells | 1/10 | 4413 days | 8% |
| alastair maceachern | 1/10 | 4413 days | 8% |
| hirini2371 | 1/10 | 4474 days | 8% |
| Lisa Ruhfus | 10/10 | 4728 days | 20% |
| Danpaley | 1/10 | 4779 days | 8% |
| Ashley Mckenney | 8/10 | 4793 days | 20% |
| Isabella Abele | 7/10 | 4810 days | 19% |
| smileyducky | 1/10 | 4901 days | 8% |
| Lennart Lundberg | 7/10 | 5056 days | 19% |
| Claudia Jackson and Geoffroy van Roelenbosch | 7/10 | 5068 days | 19% |
| Chrissy Crebas | 6/10 | 5070 days | 18% |
| Beth and Daisy | 8/10 | 5073 days | 20% |
| Tim Wright | 8/10 | 5111 days | 20% |
| Emma Wilkinson | 8/10 | 5112 days | 20% |
| Katny | 8/10 | 5113 days | 20% |
| SandyS | 8/10 | 5144 days | 20% |
| Katy | 8/10 | 5383 days | 20% |
| Christine T | 8/10 | 5444 days | 20% |
| Marcio Moretti | 9/10 | 5460 days | 20% |
| ohSNAP | 3/10 | 5478 days | 11% |
| Hokang Kim | 3/10 | 5540 days | 11% |
| Lindsay Brown | 5/10 | 5550 days | 15% |
| confederatesoldier | 1/10 | 5570 days | 8% |
| Annabel | 1/10 | 5601 days | 8% |
| miniappleses | 8/10 | 5601 days | 20% |
| Ozhan | 8/10 | 5824 days | 20% |
| Deahne | 8/10 | 5834 days | 20% |
| Yuko | 9/10 | 5834 days | 20% |
| Craig | 10/10 | 5841 days | 20% |
| Constance | 7/10 | 5850 days | 19% |
| Kristen | 8/10 | 5857 days | 20% |
| frank | 5/10 | 5858 days | 15% |
| Grace | 9/10 | 5889 days | 20% |
| Claudia Schmidt | 9/10 | 5900 days | 20% |
| Helga | 6/10 | 5958 days | 18% |
| Sophie | 10/10 | 5981 days | 20% |
| Carmen | 10/10 | 6036 days | 20% |
| Wolfgang | 7/10 | 6056 days | 19% |
| Anke | 8/10 | 6134 days | 20% |
| Hernando | 9/10 | 6160 days | 20% |
| Klaus | 7/10 | 6164 days | 19% |
| Corinne | 8/10 | 6168 days | 20% |
| Yumi | 7/10 | 6177 days | 19% |
| Lena | 8/10 | 6177 days | 20% |
| Vicky Elliott | 9/10 | 6195 days | 20% |
| Sophia | 10/10 | 6197 days | 20% |
| Reina Lohaye | 9/10 | 6199 days | 20% |
| Iain | 9/10 | 6231 days | 20% |
| Gav | 6/10 | 6231 days | 18% |
| Anneli | 6/10 | 6232 days | 18% |
| Davinia | 9/10 | 6259 days | 20% |
| Rob Boston | 1/10 | 6332 days | 8% |
| Will | 9/10 | 6500 days | 20% |
| clairekidd | 9/10 | 6513 days | 20% |
| Silke | 9/10 | 6521 days | 20% |
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
10.02% 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.