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.
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Portobello Village Tourist Park
Valid Reviews
110 Valid Reviews
The Portobello Village Tourist Park experience has a total of 110 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 110 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 15 |
|
14% |
| 9/10 | 25 |
|
23% |
| 8/10 | 33 |
|
30% |
| 7/10 | 17 |
|
15% |
| 6/10 | 14 |
|
13% |
| 5/10 | 3 |
|
3% |
| 4/10 | 0 |
|
0% |
| 3/10 | 2 |
|
2% |
| 2/10 | 0 |
|
0% |
| 1/10 | 1 |
|
1% |
78.55% Average
The raw data average (mean) for all the Portobello Village Tourist Park valid reviews is 78.55% and is based on 110 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 110 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
82.59%
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 |
|---|---|---|---|
| Eline | 6/10 | 25 days | 86% |
| Laurie | 9/10 | 56 days | 99% |
| Hannah | 10/10 | 84 days | 100% |
| Shaun | 10/10 | 84 days | 100% |
| Anne | 8/10 | 115 days | 98% |
| Fredrik | 6/10 | 115 days | 86% |
| Nicolas | 7/10 | 207 days | 91% |
| Hayley | 9/10 | 268 days | 95% |
| Lindsay Byrnes | 8/10 | 390 days | 90% |
| Fabienne | 8/10 | 421 days | 88% |
| Ian Garcia | 8/10 | 450 days | 87% |
| Tine Warner | 9/10 | 481 days | 86% |
| Joel Fryett | 6/10 | 481 days | 75% |
| Loam | 6/10 | 481 days | 75% |
| M.K. | 9/10 | 573 days | 81% |
| Ryli West | 8/10 | 756 days | 66% |
| Steve | 9/10 | 787 days | 64% |
| Jake | 10/10 | 815 days | 62% |
| Arie | 7/10 | 846 days | 55% |
| Julia | 9/10 | 877 days | 56% |
| Debby | 9/10 | 907 days | 53% |
| Lothar Valentijn | 10/10 | 907 days | 53% |
| Sarah | 9/10 | 907 days | 53% |
| Colin | 8/10 | 938 days | 49% |
| Lisa | 10/10 | 1060 days | 38% |
| Anne S | 9/10 | 1152 days | 30% |
| Ana and Rob | 8/10 | 1729 days | 5% |
| Sandy | 9/10 | 1760 days | 5% |
| Maria | 6/10 | 1882 days | 4% |
| M&P | 8/10 | 1911 days | 4% |
| Tom Z. | 9/10 | 1942 days | 4% |
| Tea | 8/10 | 1973 days | 4% |
| Sue W | 8/10 | 2003 days | 4% |
| Maryline | 9/10 | 2217 days | 4% |
| Esa | 7/10 | 2248 days | 4% |
| Vincent | 9/10 | 2248 days | 4% |
| TP&MM | 8/10 | 2248 days | 4% |
| Chantal | 10/10 | 2338 days | 4% |
| James & Kerry | 9/10 | 2368 days | 4% |
| Melinda Pyke | 8/10 | 2429 days | 3% |
| Grizzly Girl | 8/10 | 2429 days | 3% |
| Esteban | 8/10 | 2582 days | 3% |
| Bridget Cumming | 7/10 | 2620 days | 3% |
| M A Pelton | 10/10 | 2623 days | 3% |
| UK 50-something couple | 8/10 | 2641 days | 3% |
| Suzanne Wijsman | 9/10 | 2649 days | 3% |
| Sandra Jeffers | 6/10 | 2749 days | 2% |
| Howard Morris | 8/10 | 2765 days | 3% |
| Geoff Steele | 7/10 | 2793 days | 3% |
| Matthias Wohlgemuth | 7/10 | 3020 days | 2% |
| sara hoeflaken | 8/10 | 3034 days | 2% |
| Roeland Driessen | 8/10 | 3036 days | 2% |
| Cyrielle Vallat | 6/10 | 3092 days | 2% |
| Susan H | 10/10 | 3131 days | 2% |
| Ruth Hernandez | 8/10 | 3133 days | 2% |
| Kate | 8/10 | 3266 days | 2% |
| Joanna du Toit | 7/10 | 3423 days | 1% |
| Yvonne Wu | 8/10 | 3647 days | 1% |
| Soizic Vandermeersch | 7/10 | 3670 days | 1% |
| Rossco | 6/10 | 3677 days | 1% |
| Erica b | 7/10 | 3677 days | 1% |
| Larry Dashiell | 9/10 | 3708 days | 1% |
| June Harris | 6/10 | 3767 days | 1% |
| Matthias Thorn | 7/10 | 3767 days | 1% |
| Richard | 8/10 | 3952 days | 1% |
| travelscot | 9/10 | 4013 days | 0% |
| Patricia Revel | 9/10 | 4044 days | 0% |
| Katarina | 10/10 | 4045 days | 0% |
| Gillian Scott | 7/10 | 4072 days | 0% |
| Julie Robinson | 7/10 | 4089 days | 0% |
| Julien de la lande | 6/10 | 4115 days | 0% |
| Wouter Bosch | 7/10 | 4115 days | 0% |
| Aude Moulin | 5/10 | 4115 days | 0% |
| Maya Bakker-deDreu | 8/10 | 4123 days | 0% |
| JoMary Smith | 8/10 | 4133 days | 0% |
| 2 tent travelers from Montreal | 5/10 | 4164 days | 0% |
| Grantygrant | 7/10 | 4408 days | 1% |
| Bertiethebus | 8/10 | 4439 days | 1% |
| Kadyan | 6/10 | 4439 days | 1% |
| Malgorzata | 6/10 | 4443 days | 0% |
| Moni Sangoi | 7/10 | 4467 days | 1% |
| Puma17 | 7/10 | 4498 days | 1% |
| David | 5/10 | 4498 days | 0% |
| Auger | 10/10 | 4536 days | 0% |
| Auger | 10/10 | 4536 days | 0% |
| Mike & Jennie | 8/10 | 4815 days | 0% |
| Balonno | 3/10 | 4864 days | 0% |
| lydzb | 6/10 | 4895 days | 1% |
| ncopas | 1/10 | 4895 days | 0% |
| Annie Breton | 6/10 | 5153 days | 0% |
| Robin Smith | 10/10 | 5156 days | 0% |
| Jim & Rebecca | 9/10 | 5162 days | 0% |
| Tony & Marina Greenaway | 8/10 | 5163 days | 0% |
| Chris | 8/10 | 5164 days | 0% |
| LandJ | 9/10 | 5170 days | 1% |
| Manfred & Gabi | 9/10 | 5181 days | 0% |
| Frank Lehe | 8/10 | 5183 days | 0% |
| Marieke and Bert-Jan | 8/10 | 5186 days | 0% |
| Roy Seymour | 8/10 | 5189 days | 0% |
| Sabine | 9/10 | 5448 days | 0% |
| Anna | 9/10 | 5453 days | 0% |
| Siebels Wilke | 8/10 | 5467 days | 0% |
| Peter Aerborg | 9/10 | 5471 days | 0% |
| Peter Brown | 10/10 | 5531 days | 0% |
| John Cox | 8/10 | 5541 days | 0% |
| Helmet Paula | 3/10 | 5548 days | 0% |
| Lorena | 10/10 | 5563 days | 1% |
| Alexis De Wilde | 9/10 | 5635 days | 0% |
| Decuq | 7/10 | 5636 days | 0% |
| Vivien Williams | 10/10 | 5887 days | 0% |
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
-0.21% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 73 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 13 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 10 | -0.16% |
| 11 | -0.18% |
| 12 | -0.19% |
| 13 | -0.21% |
| 14 | -0.23% |
| 15 | -0.24% |
| 16 | -0.26% |
| … | … |
Balancing Adjustment
2.39% 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
85%
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.