Hoover Institution
How purchase optimization affects donor conversion in a Facebook campaign
Experiment ID: #12109
Hoover Institution
Experiment Summary
Timeframe: 01/29/2019 - 02/21/2019
Hoover Institution was running a Facebook campaign to promote their Intellectual Poverty offer, and wanted to test the effectiveness of optimizing for Facebook’s native Purchase event, which brings in outside financial data to inform targeting, on instant donor conversion. The control version of the campaign optimized for a custom conversion (ebook signup). Both campaigns were identical in ad set targeting and content.
Research Question
Does purchase optimization in a Facebook campaign increase instant donor conversion?
Design
C: Custom Conversion Optimization
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[large-height] => 434
[1536x1536] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8.jpg
[1536x1536-width] => 615
[1536x1536-height] => 434
[2048x2048] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8.jpg
[2048x2048-width] => 615
[2048x2048-height] => 434
[tp-image-grid] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8.jpg
[tp-image-grid-width] => 615
[tp-image-grid-height] => 434
[post-thumbnail] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-150x150.jpg
[post-thumbnail-width] => 150
[post-thumbnail-height] => 150
[admin] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-50x35.jpg
[admin-width] => 50
[admin-height] => 35
[full] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8.jpg
[full-width] => 615
[full-height] => 434
[thumb_372] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-372x263.jpg
[thumb_372-width] => 372
[thumb_372-height] => 263
[single_post_thumbnail] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8.jpg
[single_post_thumbnail-width] => 615
[single_post_thumbnail-height] => 434
[thumb_32_32] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-32x23.jpg
[thumb_32_32-width] => 32
[thumb_32_32-height] => 23
[thumb_48_48] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-48x34.jpg
[thumb_48_48-width] => 48
[thumb_48_48-height] => 34
[thumb_64_64] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-64x45.jpg
[thumb_64_64-width] => 64
[thumb_64_64-height] => 45
[thumb_128_128] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-128x90.jpg
[thumb_128_128-width] => 128
[thumb_128_128-height] => 90
[thumb_122_67] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-95x67.jpg
[thumb_122_67-width] => 95
[thumb_122_67-height] => 67
[thumb_153_153] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-153x108.jpg
[thumb_153_153-width] => 153
[thumb_153_153-height] => 108
[thumb_130_163] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-130x92.jpg
[thumb_130_163-width] => 130
[thumb_130_163-height] => 92
[thumb_232_177] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-232x164.jpg
[thumb_232_177-width] => 232
[thumb_232_177-height] => 164
[thumb_272_325] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-544x384.jpg
[thumb_272_325-width] => 544
[thumb_272_325-height] => 384
[thumb_271_346] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-271x191.jpg
[thumb_271_346-width] => 271
[thumb_271_346-height] => 191
[thumb_271_271] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-271x191.jpg
[thumb_271_271-width] => 271
[thumb_271_271-height] => 191
[thumb_272_172] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-244x172.jpg
[thumb_272_172-width] => 244
[thumb_272_172-height] => 172
[thumb_372_461] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-372x263.jpg
[thumb_372_461-width] => 372
[thumb_372_461-height] => 263
[thumb_372_500] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-372x263.jpg
[thumb_372_500-width] => 372
[thumb_372_500-height] => 263
[thumb_385_270] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-383x270.jpg
[thumb_385_270-width] => 383
[thumb_385_270-height] => 270
[thumb_416_241] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-342x241.jpg
[thumb_416_241-width] => 342
[thumb_416_241-height] => 241
[thumb_448_410] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-448x316.jpg
[thumb_448_410-width] => 448
[thumb_448_410-height] => 316
[thumb_448_410_retina] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8.jpg
[thumb_448_410_retina-width] => 615
[thumb_448_410_retina-height] => 434
[thumb_574_382] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-541x382.jpg
[thumb_574_382-width] => 541
[thumb_574_382-height] => 382
[thumb_776_395] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8-560x395.jpg
[thumb_776_395-width] => 560
[thumb_776_395-height] => 395
[gform-image-choice-sm] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8.jpg
[gform-image-choice-sm-width] => 300
[gform-image-choice-sm-height] => 212
[gform-image-choice-md] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8.jpg
[gform-image-choice-md-width] => 400
[gform-image-choice-md-height] => 282
[gform-image-choice-lg] => https://www.nextafter.com/wp-content/uploads/Purchase_Optimization-8.jpg
[gform-image-choice-lg-width] => 600
[gform-image-choice-lg-height] => 423
)
)
)
Results
This experiment has a required sample size of
21,203 in order to be valid. Since the experiment had a total sample size of
113,472, and
the level of confidence is above 95%
the experiment results are
valid.
Flux Metrics Affected
The Flux Metrics analyze the three primary metrics that affect revenue (traffic, conversion rate, and average
gift).
This experiment produced the following results:
0% increase in traffic
× 194.6% increase in conversion rate
× 0% increase in average gift
Key Learnings
The treatment campaign increased donor conversion rate by 194% over the course of about 20 days. This is consistent with what we’ve seen across other organization over the last few weeks, and encouraging as we push forward to increase donors significantly over the next few months.
The purchase optimization not only increased donations, it also produced a slight increase in signup conversion rate (3%).
We’ve turned off the original campaign and pushed spend to this campaign as a result.