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 Ace Rental Cars.
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.
Ace Rental Cars
Valid Reviews
110 Valid Reviews
The Ace Rental Cars experience has a total of 117 reviews. There are 110 valid reviews that are included when calculating the ranking score and 7 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 | 12 |
|
11% |
| 9/10 | 9 |
|
8% |
| 8/10 | 21 |
|
19% |
| 7/10 | 7 |
|
6% |
| 6/10 | 3 |
|
3% |
| 5/10 | 5 |
|
5% |
| 4/10 | 3 |
|
3% |
| 3/10 | 2 |
|
2% |
| 2/10 | 17 |
|
15% |
| 1/10 | 31 |
|
28% |
49.45% Average
The raw data average (mean) for all the Ace Rental Cars valid reviews is 49.45% 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
47 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 47 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 47 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 5 |
|
11% |
| 9/10 | 5 |
|
11% |
| 8/10 | 19 |
|
40% |
| 7/10 | 7 |
|
15% |
| 6/10 | 3 |
|
6% |
| 5/10 | 4 |
|
9% |
| 4/10 | 2 |
|
4% |
| 3/10 | 1 |
|
2% |
| 2/10 | 1 |
|
2% |
| 1/10 | 0 |
|
0% |
73.83% Average
The raw data average (mean) for all the Ace Rental Cars face-to-face reviews is 73.83% and is based on 47 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
37.38%
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 |
|---|---|---|---|
| Nicole | 1/10 | 385 days | 100% |
| Lana | 1/10 | 996 days | 48% |
| Megan | 1/10 | 1116 days | 37% |
| Mateo | 1/10 | 1269 days | 25% |
| Jenny Kirk | 1/10 | 2030 days | 5% |
| John | 1/10 | 2183 days | 5% |
| Kim canny | 1/10 | 2243 days | 4% |
| Richard Bird | 2/10 | 2243 days | 5% |
| Neal Smith | 10/10 | 2273 days | 11% |
| Marianne | 1/10 | 2549 days | 4% |
| Andy Willmott | 1/10 | 2577 days | 4% |
| Kate | 1/10 | 2577 days | 4% |
| Luca Mangione | 2/10 | 2608 days | 4% |
| John | 2/10 | 2608 days | 4% |
| Sri Claney | 1/10 | 2639 days | 4% |
| Tom | 10/10 | 2639 days | 9% |
| Wendy | 10/10 | 2700 days | 9% |
| Justin | 1/10 | 2730 days | 3% |
| Dan | 2/10 | 2730 days | 4% |
| PB | 1/10 | 2822 days | 3% |
| Mike | 2/10 | 2883 days | 4% |
| Siena | 1/10 | 2883 days | 3% |
| Josephina | 1/10 | 2883 days | 3% |
| RyLee B | 1/10 | 2973 days | 3% |
| Chris Monk | 1/10 | 3247 days | 2% |
| Bryce Kehoe | 8/10 | 3265 days | 6% |
| Martin Murlik | 6/10 | 3269 days | 5% |
| Audrey Darling | 1/10 | 3306 days | 2% |
| Ben | 8/10 | 3409 days | 5% |
| Jo Yo | 1/10 | 3459 days | 2% |
| Olivier Reculeau | 8/10 | 3615 days | 4% |
| Bernhard Fichtl | 5/10 | 3672 days | 3% |
| Casey O'Brien | 2/10 | 3672 days | 2% |
| Carmel Lackey | 10/10 | 3796 days | 3% |
| Martin B | 2/10 | 3856 days | 1% |
| S D | 2/10 | 3917 days | 1% |
| Dror Eyal | 2/10 | 4009 days | 1% |
| Ted Allan | 2/10 | 4009 days | 1% |
| Kat R | 2/10 | 4037 days | 1% |
| Tom Grigg | 6/10 | 4050 days | 1% |
| Charlie Birdwick | 9/10 | 4160 days | 1% |
| Kiwinomad | 1/10 | 4191 days | 0% |
| Paje | 2/10 | 4191 days | 0% |
| MODADC | 3/10 | 4222 days | 0% |
| kjd | 2/10 | 4344 days | 0% |
| Pete Dixon | 1/10 | 4402 days | 1% |
| Diane S | 9/10 | 4403 days | 3% |
| Michael Rohn | 8/10 | 4431 days | 3% |
| Cornelia Stark | 9/10 | 4431 days | 3% |
| Michael Stark | 10/10 | 4431 days | 3% |
| Tisa Duong | 1/10 | 4434 days | 1% |
| R K | 1/10 | 4434 days | 1% |
| Simon Kay | 2/10 | 4434 days | 1% |
| Annika Schmidt | 7/10 | 4714 days | 2% |
| Patrick Stoeit | 5/10 | 4714 days | 2% |
| Y S | 10/10 | 4768 days | 3% |
| Rikke E. | 1/10 | 4799 days | 1% |
| Takenforaride | 1/10 | 4799 days | 1% |
| sharnef | 2/10 | 4891 days | 1% |
| Tourist101 | 9/10 | 4891 days | 3% |
| Jonas King | 4/10 | 4952 days | 2% |
| NoWonderAllKiwisAreInOZ | 1/10 | 5013 days | 1% |
| russwhanau | 1/10 | 5074 days | 1% |
| Marian Stolker | 8/10 | 5121 days | 3% |
| Thomas Krause | 5/10 | 5128 days | 2% |
| Chris & Jen Spencer | 8/10 | 5145 days | 3% |
| Wendy Ashmore | 10/10 | 5212 days | 3% |
| Hamlet | 1/10 | 5318 days | 1% |
| tonny_lim | 1/10 | 5379 days | 1% |
| Gunter | 8/10 | 5454 days | 3% |
| Igor Cima | 10/10 | 5457 days | 3% |
| Gary Koehler | 8/10 | 5462 days | 3% |
| Ryan Dorsey | 8/10 | 5468 days | 3% |
| Kathleen Brown | 10/10 | 5469 days | 3% |
| Ross | 10/10 | 5471 days | 3% |
| Wendy Good | 8/10 | 5473 days | 3% |
| Stacey Rees | 2/10 | 5485 days | 1% |
| Helen Gilbertson | 8/10 | 5498 days | 3% |
| Lacam | 5/10 | 5499 days | 2% |
| jls | 1/10 | 5561 days | 1% |
| chubby69 | 9/10 | 5714 days | 3% |
| Ann Michle | 8/10 | 5756 days | 3% |
| Rose Kearsley | 7/10 | 5826 days | 2% |
| Jamie Hallifax | 8/10 | 5855 days | 3% |
| meggles | 2/10 | 5864 days | 1% |
| Jane | 8/10 | 5926 days | 3% |
| Dimitry Zonnet | 8/10 | 5952 days | 3% |
| S Schlesinger | 10/10 | 6174 days | 3% |
| Jessica Jobmann | 7/10 | 6176 days | 2% |
| Mayer | 8/10 | 6186 days | 3% |
| AnnickH | 7/10 | 6192 days | 2% |
| OllyD | 4/10 | 6199 days | 2% |
| Jasmin | 7/10 | 6200 days | 2% |
| ChenM | 9/10 | 6204 days | 3% |
| Mark | 8/10 | 6242 days | 3% |
| Daryl | 7/10 | 6243 days | 2% |
| Tim | 8/10 | 6290 days | 3% |
| Kath | 9/10 | 6347 days | 3% |
| Louise | 9/10 | 6376 days | 3% |
| Edmund Hillstone | 1/10 | 6519 days | 1% |
| Marian Mckinney | 10/10 | 6563 days | 3% |
| Emma Dickinson | 6/10 | 6567 days | 2% |
| Omri Hasson | 4/10 | 6567 days | 2% |
| Ian and Judy | 8/10 | 6571 days | 3% |
| Katharina | 7/10 | 6582 days | 2% |
| Mike | 3/10 | 6582 days | 1% |
| Mark | 8/10 | 6598 days | 3% |
| Melissa Steedman | 5/10 | 6609 days | 2% |
| Steven | 9/10 | 6644 days | 3% |
| purplekat99 | 8/10 | 6718 days | 3% |
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 Ace Rental Cars experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-7.14% Adjustment
Recent reviews reflect the experience as it currently operates. This means it's important to get fresh reviews. Some experiences discovered they could get a few good reviews and then, resting on their laurels, discourage any further reviews. This adjustment stimulates experiences to be positively involved in the review generating process and discourages them from manipulating the ranking system in this manner.
What constitutes a recent review is based on the how old it is, what type of experience it is applied to and and what time of year it currently is. Due to the seasonal nature of many businesses, what is considered recent is dynamically adjusted throughout the year.
There may be an adjustment if this experience hasn't received enough reviews within the last 53 days. The Ace Rental Cars experience has 0 recent rankings. Adjustments are according to the following table:
| Recent Reviews | Adjustment |
|---|---|
| 0 | -3.00% |
| 1 | -2.63% |
| 2 | -1.50% |
| 3 | -0.38% |
| 4 | -0.00% |
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 Ace Rental Cars 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
32.95% 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
63%
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.