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
111 Valid Reviews
The Ace Rental Cars experience has a total of 118 reviews. There are 111 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 111 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 | 32 |
|
29% |
49.10% Average
The raw data average (mean) for all the Ace Rental Cars valid reviews is 49.10% and is based on 111 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 111 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
32.59%
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 |
|---|---|---|---|
| Paul | 1/10 | 40 days | 100% |
| Nicole | 1/10 | 405 days | 91% |
| Lana | 1/10 | 1016 days | 42% |
| Megan | 1/10 | 1136 days | 32% |
| Mateo | 1/10 | 1289 days | 21% |
| Jenny Kirk | 1/10 | 2050 days | 5% |
| John | 1/10 | 2203 days | 4% |
| Kim canny | 1/10 | 2263 days | 4% |
| Richard Bird | 2/10 | 2263 days | 5% |
| Neal Smith | 10/10 | 2294 days | 10% |
| Marianne | 1/10 | 2569 days | 4% |
| Andy Willmott | 1/10 | 2597 days | 3% |
| Kate | 1/10 | 2597 days | 3% |
| Luca Mangione | 2/10 | 2628 days | 4% |
| John | 2/10 | 2628 days | 4% |
| Sri Claney | 1/10 | 2659 days | 3% |
| Tom | 10/10 | 2659 days | 8% |
| Wendy | 10/10 | 2720 days | 8% |
| Justin | 1/10 | 2750 days | 3% |
| Dan | 2/10 | 2750 days | 4% |
| PB | 1/10 | 2842 days | 3% |
| Mike | 2/10 | 2903 days | 3% |
| Siena | 1/10 | 2903 days | 3% |
| Josephina | 1/10 | 2903 days | 3% |
| RyLee B | 1/10 | 2993 days | 3% |
| Chris Monk | 1/10 | 3268 days | 2% |
| Bryce Kehoe | 8/10 | 3285 days | 5% |
| Martin Murlik | 6/10 | 3289 days | 5% |
| Audrey Darling | 1/10 | 3327 days | 2% |
| Ben | 8/10 | 3429 days | 4% |
| Jo Yo | 1/10 | 3480 days | 2% |
| Olivier Reculeau | 8/10 | 3635 days | 3% |
| Bernhard Fichtl | 5/10 | 3692 days | 2% |
| Casey O'Brien | 2/10 | 3693 days | 1% |
| Carmel Lackey | 10/10 | 3816 days | 3% |
| Martin B | 2/10 | 3877 days | 1% |
| S D | 2/10 | 3938 days | 1% |
| Dror Eyal | 2/10 | 4030 days | 1% |
| Ted Allan | 2/10 | 4030 days | 1% |
| Kat R | 2/10 | 4058 days | 1% |
| Tom Grigg | 6/10 | 4070 days | 1% |
| Charlie Birdwick | 9/10 | 4181 days | 1% |
| Kiwinomad | 1/10 | 4211 days | 0% |
| Paje | 2/10 | 4211 days | 0% |
| MODADC | 3/10 | 4242 days | 0% |
| kjd | 2/10 | 4364 days | 0% |
| Pete Dixon | 1/10 | 4423 days | 1% |
| Diane S | 9/10 | 4423 days | 2% |
| Michael Rohn | 8/10 | 4451 days | 2% |
| Cornelia Stark | 9/10 | 4451 days | 2% |
| Michael Stark | 10/10 | 4451 days | 2% |
| Tisa Duong | 1/10 | 4454 days | 1% |
| R K | 1/10 | 4454 days | 1% |
| Simon Kay | 2/10 | 4454 days | 1% |
| Annika Schmidt | 7/10 | 4734 days | 2% |
| Patrick Stoeit | 5/10 | 4734 days | 2% |
| Y S | 10/10 | 4788 days | 2% |
| Rikke E. | 1/10 | 4819 days | 1% |
| Takenforaride | 1/10 | 4819 days | 1% |
| sharnef | 2/10 | 4911 days | 1% |
| Tourist101 | 9/10 | 4911 days | 2% |
| Jonas King | 4/10 | 4972 days | 2% |
| NoWonderAllKiwisAreInOZ | 1/10 | 5033 days | 1% |
| russwhanau | 1/10 | 5094 days | 1% |
| Marian Stolker | 8/10 | 5141 days | 2% |
| Thomas Krause | 5/10 | 5148 days | 2% |
| Chris & Jen Spencer | 8/10 | 5165 days | 2% |
| Wendy Ashmore | 10/10 | 5232 days | 2% |
| Hamlet | 1/10 | 5338 days | 1% |
| tonny_lim | 1/10 | 5399 days | 1% |
| Gunter | 8/10 | 5474 days | 2% |
| Igor Cima | 10/10 | 5477 days | 2% |
| Gary Koehler | 8/10 | 5482 days | 2% |
| Ryan Dorsey | 8/10 | 5488 days | 2% |
| Kathleen Brown | 10/10 | 5489 days | 2% |
| Ross | 10/10 | 5491 days | 2% |
| Wendy Good | 8/10 | 5493 days | 2% |
| Stacey Rees | 2/10 | 5505 days | 1% |
| Helen Gilbertson | 8/10 | 5518 days | 2% |
| Lacam | 5/10 | 5519 days | 2% |
| jls | 1/10 | 5581 days | 1% |
| chubby69 | 9/10 | 5734 days | 2% |
| Ann Michle | 8/10 | 5776 days | 2% |
| Rose Kearsley | 7/10 | 5846 days | 2% |
| Jamie Hallifax | 8/10 | 5875 days | 2% |
| meggles | 2/10 | 5884 days | 1% |
| Jane | 8/10 | 5946 days | 2% |
| Dimitry Zonnet | 8/10 | 5972 days | 2% |
| S Schlesinger | 10/10 | 6194 days | 2% |
| Jessica Jobmann | 7/10 | 6196 days | 2% |
| Mayer | 8/10 | 6206 days | 2% |
| AnnickH | 7/10 | 6212 days | 2% |
| OllyD | 4/10 | 6219 days | 2% |
| Jasmin | 7/10 | 6220 days | 2% |
| ChenM | 9/10 | 6224 days | 2% |
| Mark | 8/10 | 6262 days | 2% |
| Daryl | 7/10 | 6263 days | 2% |
| Tim | 8/10 | 6310 days | 2% |
| Kath | 9/10 | 6367 days | 2% |
| Louise | 9/10 | 6396 days | 2% |
| Edmund Hillstone | 1/10 | 6539 days | 1% |
| Marian Mckinney | 10/10 | 6583 days | 2% |
| Emma Dickinson | 6/10 | 6587 days | 2% |
| Omri Hasson | 4/10 | 6587 days | 2% |
| Ian and Judy | 8/10 | 6591 days | 2% |
| Katharina | 7/10 | 6602 days | 2% |
| Mike | 3/10 | 6602 days | 1% |
| Mark | 8/10 | 6618 days | 2% |
| Melissa Steedman | 5/10 | 6629 days | 2% |
| Steven | 9/10 | 6664 days | 2% |
| purplekat99 | 8/10 | 6738 days | 2% |
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
-2.85% 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 57 days. The Ace Rental Cars experience has 1 recent ranking. 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 11 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 8 | -0.16% |
| 9 | -0.18% |
| 10 | -0.20% |
| 11 | -0.22% |
| 12 | -0.24% |
| 13 | -0.26% |
| 14 | -0.28% |
| … | … |
Balancing Adjustment
33.06% 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.