Kia ora, 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 Portobello Village Tourist Park.
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.
Portobello Village Tourist Park
Valid Reviews
113 Valid Reviews
The Portobello Village Tourist Park experience has a total of 113 valid reviews. There are no 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 113 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 15 |
|
13% |
| 9/10 | 25 |
|
22% |
| 8/10 | 34 |
|
30% |
| 7/10 | 19 |
|
17% |
| 6/10 | 14 |
|
12% |
| 5/10 | 3 |
|
3% |
| 4/10 | 0 |
|
0% |
| 3/10 | 2 |
|
2% |
| 2/10 | 0 |
|
0% |
| 1/10 | 1 |
|
1% |
78.41% Average
The raw data average (mean) for all the Portobello Village Tourist Park valid reviews is 78.41% and is based on 113 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
30 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 113 valid reviews, the experience has 30 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 30 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 6 |
|
20% |
| 9/10 | 7 |
|
23% |
| 8/10 | 9 |
|
30% |
| 7/10 | 3 |
|
10% |
| 6/10 | 3 |
|
10% |
| 5/10 | 1 |
|
3% |
| 4/10 | 0 |
|
0% |
| 3/10 | 1 |
|
3% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
80.67% Average
The raw data average (mean) for all the Portobello Village Tourist Park face-to-face reviews is 80.67% and is based on 30 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
80.32%
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 |
|---|---|---|---|
| cirefice bernard | 7/10 | 199 days | 97% |
| Paul | 8/10 | 260 days | 100% |
| Rich | 7/10 | 352 days | 92% |
| Eline | 6/10 | 443 days | 81% |
| Laurie | 9/10 | 474 days | 92% |
| Hannah | 10/10 | 502 days | 91% |
| Shaun | 10/10 | 502 days | 91% |
| Anne | 8/10 | 533 days | 87% |
| Fredrik | 6/10 | 533 days | 77% |
| Nicolas | 7/10 | 625 days | 77% |
| Hayley | 9/10 | 686 days | 77% |
| Lindsay Byrnes | 8/10 | 808 days | 65% |
| Fabienne | 8/10 | 839 days | 62% |
| Ian Garcia | 8/10 | 868 days | 59% |
| Tine Warner | 9/10 | 899 days | 57% |
| Joel Fryett | 6/10 | 899 days | 49% |
| Loam | 6/10 | 899 days | 49% |
| M.K. | 9/10 | 991 days | 47% |
| Ryli West | 8/10 | 1174 days | 30% |
| Steve | 9/10 | 1205 days | 28% |
| Jake | 10/10 | 1233 days | 27% |
| Arie | 7/10 | 1264 days | 23% |
| Julia | 9/10 | 1295 days | 22% |
| Debby | 9/10 | 1325 days | 20% |
| Lothar Valentijn | 10/10 | 1325 days | 20% |
| Sarah | 9/10 | 1325 days | 20% |
| Colin | 8/10 | 1356 days | 18% |
| Lisa | 10/10 | 1478 days | 13% |
| Anne S | 9/10 | 1570 days | 9% |
| Ana and Rob | 8/10 | 2147 days | 5% |
| Sandy | 9/10 | 2178 days | 5% |
| Maria | 6/10 | 2300 days | 4% |
| M&P | 8/10 | 2329 days | 4% |
| Tom Z. | 9/10 | 2360 days | 4% |
| Tea | 8/10 | 2391 days | 4% |
| Sue W | 8/10 | 2421 days | 4% |
| Maryline | 9/10 | 2635 days | 4% |
| Esa | 7/10 | 2666 days | 3% |
| Vincent | 9/10 | 2666 days | 4% |
| TP&MM | 8/10 | 2666 days | 3% |
| Chantal | 10/10 | 2756 days | 3% |
| James & Kerry | 9/10 | 2786 days | 3% |
| Melinda Pyke | 8/10 | 2847 days | 3% |
| Grizzly Girl | 8/10 | 2847 days | 3% |
| Esteban | 8/10 | 3000 days | 3% |
| Bridget Cumming | 7/10 | 3038 days | 3% |
| M A Pelton | 10/10 | 3041 days | 3% |
| UK 50-something couple | 8/10 | 3059 days | 3% |
| Suzanne Wijsman | 9/10 | 3067 days | 3% |
| Sandra Jeffers | 6/10 | 3167 days | 2% |
| Howard Morris | 8/10 | 3183 days | 2% |
| Geoff Steele | 7/10 | 3211 days | 2% |
| Matthias Wohlgemuth | 7/10 | 3438 days | 2% |
| sara hoeflaken | 8/10 | 3452 days | 2% |
| Roeland Driessen | 8/10 | 3454 days | 2% |
| Cyrielle Vallat | 6/10 | 3510 days | 2% |
| Susan H | 10/10 | 3549 days | 2% |
| Ruth Hernandez | 8/10 | 3551 days | 2% |
| Kate | 8/10 | 3684 days | 1% |
| Joanna du Toit | 7/10 | 3841 days | 1% |
| Yvonne Wu | 8/10 | 4065 days | 1% |
| Soizic Vandermeersch | 7/10 | 4088 days | 1% |
| Rossco | 6/10 | 4095 days | 0% |
| Erica b | 7/10 | 4095 days | 1% |
| Larry Dashiell | 9/10 | 4126 days | 1% |
| June Harris | 6/10 | 4185 days | 0% |
| Matthias Thorn | 7/10 | 4185 days | 0% |
| Richard | 8/10 | 4370 days | 0% |
| travelscot | 9/10 | 4431 days | 1% |
| Patricia Revel | 9/10 | 4462 days | 1% |
| Katarina | 10/10 | 4463 days | 1% |
| Gillian Scott | 7/10 | 4490 days | 1% |
| Julie Robinson | 7/10 | 4507 days | 1% |
| Julien de la lande | 6/10 | 4533 days | 1% |
| Wouter Bosch | 7/10 | 4533 days | 1% |
| Aude Moulin | 5/10 | 4533 days | 1% |
| Maya Bakker-deDreu | 8/10 | 4541 days | 1% |
| JoMary Smith | 8/10 | 4551 days | 1% |
| 2 tent travelers from Montreal | 5/10 | 4582 days | 1% |
| Grantygrant | 7/10 | 4826 days | 1% |
| Bertiethebus | 8/10 | 4857 days | 1% |
| Kadyan | 6/10 | 4857 days | 1% |
| Malgorzata | 6/10 | 4861 days | 1% |
| Moni Sangoi | 7/10 | 4885 days | 1% |
| Puma17 | 7/10 | 4916 days | 1% |
| David | 5/10 | 4916 days | 1% |
| Auger | 10/10 | 4954 days | 1% |
| Auger | 10/10 | 4954 days | 1% |
| Mike & Jennie | 8/10 | 5233 days | 1% |
| Balonno | 3/10 | 5282 days | 1% |
| lydzb | 6/10 | 5313 days | 1% |
| ncopas | 1/10 | 5313 days | 0% |
| Annie Breton | 6/10 | 5571 days | 1% |
| Robin Smith | 10/10 | 5574 days | 1% |
| Jim & Rebecca | 9/10 | 5580 days | 1% |
| Tony & Marina Greenaway | 8/10 | 5581 days | 1% |
| Chris | 8/10 | 5582 days | 1% |
| LandJ | 9/10 | 5588 days | 1% |
| Manfred & Gabi | 9/10 | 5599 days | 1% |
| Frank Lehe | 8/10 | 5601 days | 1% |
| Marieke and Bert-Jan | 8/10 | 5604 days | 1% |
| Roy Seymour | 8/10 | 5607 days | 1% |
| Sabine | 9/10 | 5866 days | 1% |
| Anna | 9/10 | 5871 days | 1% |
| Siebels Wilke | 8/10 | 5885 days | 1% |
| Peter Aerborg | 9/10 | 5889 days | 1% |
| Peter Brown | 10/10 | 5949 days | 1% |
| John Cox | 8/10 | 5959 days | 1% |
| Helmet Paula | 3/10 | 5966 days | 0% |
| Lorena | 10/10 | 5981 days | 1% |
| Alexis De Wilde | 9/10 | 6053 days | 1% |
| Decuq | 7/10 | 6054 days | 1% |
| Vivien Williams | 10/10 | 6305 days | 1% |
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 Portobello Village Tourist Park experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-1.85% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 117 days. However the Portobello Village Tourist Park 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 Portobello Village Tourist Park experience has been adjusted for 170 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 167 | -1.82% |
| 168 | -1.83% |
| 169 | -1.84% |
| 170 | -1.85% |
| 171 | -1.86% |
| 172 | -1.87% |
| 173 | -1.88% |
| … | … |
Balancing Adjustment
3.44% 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
82%
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.