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 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
106 Valid Reviews
The Portobello Village Tourist Park experience has a total of 106 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 106 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 13 |
|
12% |
| 9/10 | 24 |
|
23% |
| 8/10 | 33 |
|
31% |
| 7/10 | 17 |
|
16% |
| 6/10 | 13 |
|
12% |
| 5/10 | 3 |
|
3% |
| 4/10 | 0 |
|
0% |
| 3/10 | 2 |
|
2% |
| 2/10 | 0 |
|
0% |
| 1/10 | 1 |
|
1% |
78.21% Average
The raw data average (mean) for all the Portobello Village Tourist Park valid reviews is 78.21% and is based on 106 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 106 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
81.57%
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 |
|---|---|---|---|
| Anne | 8/10 | 34 days | 100% |
| Fredrik | 6/10 | 34 days | 88% |
| Nicolas | 7/10 | 126 days | 94% |
| Hayley | 9/10 | 187 days | 99% |
| Lindsay Byrnes | 8/10 | 309 days | 95% |
| Fabienne | 8/10 | 340 days | 93% |
| Ian Garcia | 8/10 | 369 days | 92% |
| Tine Warner | 9/10 | 400 days | 92% |
| Joel Fryett | 6/10 | 400 days | 80% |
| Loam | 6/10 | 400 days | 80% |
| M.K. | 9/10 | 492 days | 87% |
| Ryli West | 8/10 | 675 days | 74% |
| Steve | 9/10 | 706 days | 72% |
| Jake | 10/10 | 734 days | 71% |
| Arie | 7/10 | 765 days | 63% |
| Julia | 9/10 | 796 days | 65% |
| Debby | 9/10 | 826 days | 62% |
| Lothar Valentijn | 10/10 | 826 days | 62% |
| Sarah | 9/10 | 826 days | 62% |
| Colin | 8/10 | 857 days | 58% |
| Lisa | 10/10 | 979 days | 47% |
| Anne S | 9/10 | 1071 days | 38% |
| Ana and Rob | 8/10 | 1648 days | 7% |
| Sandy | 9/10 | 1679 days | 6% |
| Maria | 6/10 | 1801 days | 4% |
| M&P | 8/10 | 1830 days | 5% |
| Tom Z. | 9/10 | 1861 days | 5% |
| Tea | 8/10 | 1892 days | 5% |
| Sue W | 8/10 | 1922 days | 5% |
| Maryline | 9/10 | 2136 days | 4% |
| Esa | 7/10 | 2167 days | 4% |
| Vincent | 9/10 | 2167 days | 4% |
| TP&MM | 8/10 | 2167 days | 4% |
| Chantal | 10/10 | 2257 days | 4% |
| James & Kerry | 9/10 | 2287 days | 4% |
| Melinda Pyke | 8/10 | 2348 days | 4% |
| Grizzly Girl | 8/10 | 2348 days | 4% |
| Esteban | 8/10 | 2501 days | 4% |
| Bridget Cumming | 7/10 | 2539 days | 3% |
| M A Pelton | 10/10 | 2542 days | 4% |
| UK 50-something couple | 8/10 | 2560 days | 4% |
| Suzanne Wijsman | 9/10 | 2568 days | 4% |
| Sandra Jeffers | 6/10 | 2668 days | 3% |
| Howard Morris | 8/10 | 2684 days | 3% |
| Geoff Steele | 7/10 | 2713 days | 3% |
| Matthias Wohlgemuth | 7/10 | 2939 days | 3% |
| sara hoeflaken | 8/10 | 2953 days | 3% |
| Roeland Driessen | 8/10 | 2956 days | 3% |
| Cyrielle Vallat | 6/10 | 3011 days | 2% |
| Susan H | 10/10 | 3050 days | 3% |
| Ruth Hernandez | 8/10 | 3052 days | 3% |
| Kate | 8/10 | 3185 days | 2% |
| Joanna du Toit | 7/10 | 3342 days | 2% |
| Yvonne Wu | 8/10 | 3567 days | 2% |
| Soizic Vandermeersch | 7/10 | 3589 days | 1% |
| Rossco | 6/10 | 3597 days | 1% |
| Erica b | 7/10 | 3597 days | 1% |
| Larry Dashiell | 9/10 | 3628 days | 1% |
| June Harris | 6/10 | 3687 days | 1% |
| Matthias Thorn | 7/10 | 3687 days | 1% |
| Richard | 8/10 | 3871 days | 1% |
| travelscot | 9/10 | 3932 days | 1% |
| Patricia Revel | 9/10 | 3963 days | 1% |
| Katarina | 10/10 | 3964 days | 1% |
| Gillian Scott | 7/10 | 3991 days | 1% |
| Julie Robinson | 7/10 | 4008 days | 1% |
| Julien de la lande | 6/10 | 4034 days | 0% |
| Wouter Bosch | 7/10 | 4034 days | 0% |
| Aude Moulin | 5/10 | 4034 days | 0% |
| Maya Bakker-deDreu | 8/10 | 4042 days | 0% |
| JoMary Smith | 8/10 | 4052 days | 1% |
| 2 tent travelers from Montreal | 5/10 | 4083 days | 0% |
| Grantygrant | 7/10 | 4327 days | 0% |
| Bertiethebus | 8/10 | 4358 days | 0% |
| Kadyan | 6/10 | 4358 days | 0% |
| Malgorzata | 6/10 | 4362 days | 0% |
| Moni Sangoi | 7/10 | 4386 days | 1% |
| Puma17 | 7/10 | 4417 days | 1% |
| David | 5/10 | 4417 days | 1% |
| Auger | 10/10 | 4455 days | 1% |
| Auger | 10/10 | 4455 days | 1% |
| Mike & Jennie | 8/10 | 4734 days | 1% |
| Balonno | 3/10 | 4783 days | 1% |
| lydzb | 6/10 | 4814 days | 1% |
| ncopas | 1/10 | 4814 days | 0% |
| Annie Breton | 6/10 | 5072 days | 1% |
| Robin Smith | 10/10 | 5075 days | 1% |
| Jim & Rebecca | 9/10 | 5081 days | 1% |
| Tony & Marina Greenaway | 8/10 | 5082 days | 1% |
| Chris | 8/10 | 5083 days | 1% |
| LandJ | 9/10 | 5089 days | 1% |
| Manfred & Gabi | 9/10 | 5100 days | 1% |
| Frank Lehe | 8/10 | 5102 days | 1% |
| Marieke and Bert-Jan | 8/10 | 5105 days | 1% |
| Roy Seymour | 8/10 | 5108 days | 1% |
| Sabine | 9/10 | 5367 days | 1% |
| Anna | 9/10 | 5372 days | 1% |
| Siebels Wilke | 8/10 | 5386 days | 1% |
| Peter Aerborg | 9/10 | 5390 days | 1% |
| Peter Brown | 10/10 | 5450 days | 1% |
| John Cox | 8/10 | 5460 days | 1% |
| Helmet Paula | 3/10 | 5467 days | 0% |
| Lorena | 10/10 | 5482 days | 1% |
| Alexis De Wilde | 9/10 | 5554 days | 1% |
| Decuq | 7/10 | 5555 days | 1% |
| Vivien Williams | 10/10 | 5806 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
-0.23% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 50 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 11 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 8 | -0.17% |
| 9 | -0.19% |
| 10 | -0.21% |
| 11 | -0.23% |
| 12 | -0.25% |
| 13 | -0.27% |
| 14 | -0.29% |
| … | … |
Balancing Adjustment
2.64% 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
84%
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.