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
109 Valid Reviews
The Ace Rental Cars experience has a total of 116 reviews. There are 109 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 109 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 |
|
16% |
| 1/10 | 30 |
|
28% |
49.82% Average
The raw data average (mean) for all the Ace Rental Cars valid reviews is 49.82% and is based on 109 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 109 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
36.04%
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 |
|---|---|---|---|
| Lana | 1/10 | 539 days | 100% |
| Megan | 1/10 | 660 days | 90% |
| Mateo | 1/10 | 812 days | 75% |
| Jenny Kirk | 1/10 | 1573 days | 10% |
| John | 1/10 | 1727 days | 7% |
| Kim canny | 1/10 | 1787 days | 6% |
| Richard Bird | 2/10 | 1787 days | 7% |
| Neal Smith | 10/10 | 1817 days | 15% |
| Marianne | 1/10 | 2093 days | 5% |
| Andy Willmott | 1/10 | 2121 days | 5% |
| Kate | 1/10 | 2121 days | 5% |
| Luca Mangione | 2/10 | 2152 days | 6% |
| John | 2/10 | 2152 days | 6% |
| Sri Claney | 1/10 | 2183 days | 5% |
| Tom | 10/10 | 2183 days | 13% |
| Wendy | 10/10 | 2244 days | 12% |
| Justin | 1/10 | 2273 days | 5% |
| Dan | 2/10 | 2273 days | 5% |
| PB | 1/10 | 2365 days | 5% |
| Mike | 2/10 | 2427 days | 5% |
| Siena | 1/10 | 2427 days | 4% |
| Josephina | 1/10 | 2427 days | 4% |
| RyLee B | 1/10 | 2517 days | 4% |
| Chris Monk | 1/10 | 2791 days | 4% |
| Bryce Kehoe | 8/10 | 2809 days | 9% |
| Martin Murlik | 6/10 | 2813 days | 8% |
| Audrey Darling | 1/10 | 2850 days | 4% |
| Ben | 8/10 | 2953 days | 8% |
| Jo Yo | 1/10 | 3003 days | 3% |
| Olivier Reculeau | 8/10 | 3159 days | 7% |
| Bernhard Fichtl | 5/10 | 3216 days | 5% |
| Casey O'Brien | 2/10 | 3216 days | 3% |
| Carmel Lackey | 10/10 | 3340 days | 6% |
| Martin B | 2/10 | 3400 days | 2% |
| S D | 2/10 | 3461 days | 2% |
| Dror Eyal | 2/10 | 3553 days | 2% |
| Ted Allan | 2/10 | 3553 days | 2% |
| Kat R | 2/10 | 3581 days | 2% |
| Tom Grigg | 6/10 | 3594 days | 4% |
| Charlie Birdwick | 9/10 | 3704 days | 4% |
| Kiwinomad | 1/10 | 3734 days | 1% |
| Paje | 2/10 | 3734 days | 2% |
| MODADC | 3/10 | 3765 days | 2% |
| kjd | 2/10 | 3888 days | 1% |
| Pete Dixon | 1/10 | 3946 days | 1% |
| Diane S | 9/10 | 3947 days | 2% |
| Michael Rohn | 8/10 | 3975 days | 2% |
| Cornelia Stark | 9/10 | 3975 days | 2% |
| Michael Stark | 10/10 | 3975 days | 2% |
| Tisa Duong | 1/10 | 3978 days | 1% |
| R K | 1/10 | 3978 days | 1% |
| Simon Kay | 2/10 | 3978 days | 1% |
| Annika Schmidt | 7/10 | 4258 days | 1% |
| Patrick Stoeit | 5/10 | 4258 days | 0% |
| Y S | 10/10 | 4312 days | 0% |
| Rikke E. | 1/10 | 4343 days | 0% |
| Takenforaride | 1/10 | 4343 days | 0% |
| sharnef | 2/10 | 4435 days | 1% |
| Tourist101 | 9/10 | 4435 days | 3% |
| Jonas King | 4/10 | 4495 days | 2% |
| NoWonderAllKiwisAreInOZ | 1/10 | 4556 days | 1% |
| russwhanau | 1/10 | 4618 days | 1% |
| Marian Stolker | 8/10 | 4665 days | 3% |
| Thomas Krause | 5/10 | 4672 days | 2% |
| Chris & Jen Spencer | 8/10 | 4689 days | 3% |
| Wendy Ashmore | 10/10 | 4756 days | 3% |
| Hamlet | 1/10 | 4861 days | 1% |
| tonny_lim | 1/10 | 4922 days | 1% |
| Gunter | 8/10 | 4998 days | 3% |
| Igor Cima | 10/10 | 5001 days | 3% |
| Gary Koehler | 8/10 | 5006 days | 3% |
| Ryan Dorsey | 8/10 | 5012 days | 3% |
| Kathleen Brown | 10/10 | 5013 days | 3% |
| Ross | 10/10 | 5015 days | 3% |
| Wendy Good | 8/10 | 5017 days | 3% |
| Stacey Rees | 2/10 | 5029 days | 1% |
| Helen Gilbertson | 8/10 | 5042 days | 3% |
| Lacam | 5/10 | 5043 days | 2% |
| jls | 1/10 | 5105 days | 1% |
| chubby69 | 9/10 | 5257 days | 3% |
| Ann Michle | 8/10 | 5299 days | 3% |
| Rose Kearsley | 7/10 | 5370 days | 3% |
| Jamie Hallifax | 8/10 | 5399 days | 3% |
| meggles | 2/10 | 5408 days | 1% |
| Jane | 8/10 | 5470 days | 3% |
| Dimitry Zonnet | 8/10 | 5496 days | 3% |
| S Schlesinger | 10/10 | 5718 days | 3% |
| Jessica Jobmann | 7/10 | 5720 days | 3% |
| Mayer | 8/10 | 5730 days | 3% |
| AnnickH | 7/10 | 5736 days | 3% |
| OllyD | 4/10 | 5743 days | 2% |
| Jasmin | 7/10 | 5744 days | 3% |
| ChenM | 9/10 | 5748 days | 3% |
| Mark | 8/10 | 5786 days | 3% |
| Daryl | 7/10 | 5787 days | 3% |
| Tim | 8/10 | 5834 days | 3% |
| Kath | 9/10 | 5891 days | 3% |
| Louise | 9/10 | 5920 days | 3% |
| Edmund Hillstone | 1/10 | 6063 days | 1% |
| Marian Mckinney | 10/10 | 6107 days | 3% |
| Emma Dickinson | 6/10 | 6111 days | 2% |
| Omri Hasson | 4/10 | 6111 days | 2% |
| Ian and Judy | 8/10 | 6115 days | 3% |
| Katharina | 7/10 | 6126 days | 3% |
| Mike | 3/10 | 6126 days | 2% |
| Mark | 8/10 | 6142 days | 3% |
| Melissa Steedman | 5/10 | 6153 days | 2% |
| Steven | 9/10 | 6188 days | 3% |
| purplekat99 | 8/10 | 6262 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
-7.05% 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 43 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 | -3.99% |
| 198 | -4.01% |
| 199 | -4.03% |
| 200 | -4.05% |
| 201 | -4.07% |
| 202 | -4.09% |
| 203 | -4.11% |
| … | … |
Balancing Adjustment
33.22% 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
62%
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.