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
108 Valid Reviews
The Portobello Village Tourist Park experience has a total of 108 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 108 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 15 |
|
14% |
| 9/10 | 24 |
|
22% |
| 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% |
78.61% Average
The raw data average (mean) for all the Portobello Village Tourist Park valid reviews is 78.61% and is based on 108 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 108 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
83.33%
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 |
|---|---|---|---|
| Hannah | 10/10 | 39 days | 100% |
| Shaun | 10/10 | 39 days | 100% |
| Anne | 8/10 | 70 days | 98% |
| Fredrik | 6/10 | 70 days | 86% |
| Nicolas | 7/10 | 162 days | 92% |
| Hayley | 9/10 | 223 days | 96% |
| Lindsay Byrnes | 8/10 | 345 days | 91% |
| Fabienne | 8/10 | 376 days | 90% |
| Ian Garcia | 8/10 | 405 days | 89% |
| Tine Warner | 9/10 | 436 days | 88% |
| Joel Fryett | 6/10 | 436 days | 77% |
| Loam | 6/10 | 436 days | 77% |
| M.K. | 9/10 | 528 days | 83% |
| Ryli West | 8/10 | 711 days | 70% |
| Steve | 9/10 | 742 days | 68% |
| Jake | 10/10 | 770 days | 66% |
| Arie | 7/10 | 801 days | 59% |
| Julia | 9/10 | 832 days | 60% |
| Debby | 9/10 | 862 days | 57% |
| Lothar Valentijn | 10/10 | 862 days | 58% |
| Sarah | 9/10 | 862 days | 57% |
| Colin | 8/10 | 893 days | 53% |
| Lisa | 10/10 | 1015 days | 42% |
| Anne S | 9/10 | 1107 days | 34% |
| Ana and Rob | 8/10 | 1684 days | 6% |
| Sandy | 9/10 | 1715 days | 6% |
| Maria | 6/10 | 1837 days | 4% |
| M&P | 8/10 | 1866 days | 5% |
| Tom Z. | 9/10 | 1897 days | 5% |
| Tea | 8/10 | 1928 days | 5% |
| Sue W | 8/10 | 1958 days | 5% |
| Maryline | 9/10 | 2172 days | 4% |
| Esa | 7/10 | 2203 days | 4% |
| Vincent | 9/10 | 2203 days | 4% |
| TP&MM | 8/10 | 2203 days | 4% |
| Chantal | 10/10 | 2293 days | 4% |
| James & Kerry | 9/10 | 2323 days | 4% |
| Melinda Pyke | 8/10 | 2384 days | 4% |
| Grizzly Girl | 8/10 | 2384 days | 4% |
| Esteban | 8/10 | 2537 days | 4% |
| Bridget Cumming | 7/10 | 2575 days | 3% |
| M A Pelton | 10/10 | 2578 days | 3% |
| UK 50-something couple | 8/10 | 2596 days | 3% |
| Suzanne Wijsman | 9/10 | 2604 days | 3% |
| Sandra Jeffers | 6/10 | 2704 days | 3% |
| Howard Morris | 8/10 | 2720 days | 3% |
| Geoff Steele | 7/10 | 2749 days | 3% |
| Matthias Wohlgemuth | 7/10 | 2975 days | 3% |
| sara hoeflaken | 8/10 | 2989 days | 3% |
| Roeland Driessen | 8/10 | 2992 days | 3% |
| Cyrielle Vallat | 6/10 | 3047 days | 2% |
| Susan H | 10/10 | 3086 days | 3% |
| Ruth Hernandez | 8/10 | 3088 days | 2% |
| Kate | 8/10 | 3221 days | 2% |
| Joanna du Toit | 7/10 | 3378 days | 2% |
| Yvonne Wu | 8/10 | 3603 days | 1% |
| Soizic Vandermeersch | 7/10 | 3625 days | 1% |
| Rossco | 6/10 | 3633 days | 1% |
| Erica b | 7/10 | 3633 days | 1% |
| Larry Dashiell | 9/10 | 3664 days | 1% |
| June Harris | 6/10 | 3723 days | 1% |
| Matthias Thorn | 7/10 | 3723 days | 1% |
| Richard | 8/10 | 3907 days | 1% |
| travelscot | 9/10 | 3968 days | 1% |
| Patricia Revel | 9/10 | 3999 days | 1% |
| Katarina | 10/10 | 4000 days | 1% |
| Gillian Scott | 7/10 | 4027 days | 1% |
| Julie Robinson | 7/10 | 4044 days | 0% |
| Julien de la lande | 6/10 | 4070 days | 0% |
| Wouter Bosch | 7/10 | 4070 days | 0% |
| Aude Moulin | 5/10 | 4070 days | 0% |
| Maya Bakker-deDreu | 8/10 | 4078 days | 0% |
| JoMary Smith | 8/10 | 4088 days | 1% |
| 2 tent travelers from Montreal | 5/10 | 4119 days | 0% |
| Grantygrant | 7/10 | 4363 days | 0% |
| Bertiethebus | 8/10 | 4394 days | 1% |
| Kadyan | 6/10 | 4394 days | 1% |
| Malgorzata | 6/10 | 4398 days | 1% |
| Moni Sangoi | 7/10 | 4422 days | 1% |
| Puma17 | 7/10 | 4453 days | 1% |
| David | 5/10 | 4453 days | 1% |
| Auger | 10/10 | 4491 days | 1% |
| Auger | 10/10 | 4491 days | 1% |
| Mike & Jennie | 8/10 | 4770 days | 1% |
| Balonno | 3/10 | 4819 days | 1% |
| lydzb | 6/10 | 4850 days | 1% |
| ncopas | 1/10 | 4850 days | 0% |
| Annie Breton | 6/10 | 5108 days | 1% |
| Robin Smith | 10/10 | 5111 days | 1% |
| Jim & Rebecca | 9/10 | 5117 days | 1% |
| Tony & Marina Greenaway | 8/10 | 5118 days | 1% |
| Chris | 8/10 | 5119 days | 1% |
| LandJ | 9/10 | 5125 days | 1% |
| Manfred & Gabi | 9/10 | 5136 days | 1% |
| Frank Lehe | 8/10 | 5138 days | 1% |
| Marieke and Bert-Jan | 8/10 | 5141 days | 1% |
| Roy Seymour | 8/10 | 5144 days | 1% |
| Sabine | 9/10 | 5403 days | 1% |
| Anna | 9/10 | 5408 days | 1% |
| Siebels Wilke | 8/10 | 5422 days | 1% |
| Peter Aerborg | 9/10 | 5426 days | 1% |
| Peter Brown | 10/10 | 5486 days | 1% |
| John Cox | 8/10 | 5496 days | 1% |
| Helmet Paula | 3/10 | 5503 days | 0% |
| Lorena | 10/10 | 5518 days | 1% |
| Alexis De Wilde | 9/10 | 5590 days | 1% |
| Decuq | 7/10 | 5591 days | 1% |
| Vivien Williams | 10/10 | 5842 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
-0.24% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 57 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 12 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 9 | -0.18% |
| 10 | -0.20% |
| 11 | -0.22% |
| 12 | -0.24% |
| 13 | -0.26% |
| 14 | -0.28% |
| 15 | -0.30% |
| … | … |
Balancing Adjustment
2.22% 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.