电话号码的最后一位数字是随机的吗?

发布于 2024-08-30 10:51:46 字数 225 浏览 9 评论 0原文

我有一个电话应用程序,它有一个提示,需要用户选择。我让应用程序根据呼叫者电话号码的最后一位数字选择 10 种不同的电话提示之一。然后,我测量用户是否响应提示(接受)或决定跳到下一步(拒绝)。我认为这作为随机选择足够有效,但我认为我可能是错的。

我发现,对于两个不同的最后一位数字,完全相同的提示具有截然不同的响应率(25% 与 35%)。现在我很好奇这是为什么。有谁知道电话号码是如何分配的以及为什么最后一位数字很重要?

I have a telephony app which has a prompt which requires user choice. I made the app select one of 10 different phone prompts based on the last digit of the caller's phone number. Then I measure whether the user responds to the prompt (accept) or decides to skip to the next step (reject). I thought this would work well enough as a random selection, but I think I may be wrong.

What I'm finding is that the exact same prompt has a dramatically different response rate (25% vs 35%) for two different last digits. Now I'm curious why this is. Does anyone know how phone numbers are assigned and why the last digit would be significant?

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吾家有女初长成 2024-09-06 10:51:46

我检查了我们的计费数据库。我们使用 Asterisk 作为 PBX,并将账单存储在 PostgreSQL 数据库中。

select substring(cdr_callerid_norm from '[0-9]

结果:

 last_digit | count
------------+-------
 0          | 17919
 1          | 13811
 2          |  8257
 3          | 20708
 4          | 13492
 5          | 13708
 6          |  8813
 7          |  6943
 8          | 11693
 9          |  7942
                        |  2584
(11 rows)

对我来说,这些数字不是随机的。您可以对帐单执行类似的操作并进行检查。我认为电话号码一般来说可以是随机的,但如果很少有客户更频繁地给您打电话,那么来电号码就不会是随机的。考虑使用其他东西来改变提示:随机数、使用时间等。

) as last_digit, count(*) from asterisk_cdr where cdr_callerid_norm is not null and length(cdr_callerid_norm) > 2 group by last_digit order by last_digit

结果:

对我来说,这些数字不是随机的。您可以对帐单执行类似的操作并进行检查。我认为电话号码一般来说可以是随机的,但如果很少有客户更频繁地给您打电话,那么来电号码就不会是随机的。考虑使用其他东西来改变提示:随机数、使用时间等。

I checked our billing database. We use Asterisk as PBX and store billing in PostgreSQL database.

select substring(cdr_callerid_norm from '[0-9]

Result:

 last_digit | count
------------+-------
 0          | 17919
 1          | 13811
 2          |  8257
 3          | 20708
 4          | 13492
 5          | 13708
 6          |  8813
 7          |  6943
 8          | 11693
 9          |  7942
                        |  2584
(11 rows)

To me those numbers are not random. You can do similar thing with your billing and check it. I think phone numbers can be random in general, but if few customers calls you much more often then callers number will not be random. Consider using something other to vary prompt: random number, use time etc.

) as last_digit, count(*) from asterisk_cdr where cdr_callerid_norm is not null and length(cdr_callerid_norm) > 2 group by last_digit order by last_digit

Result:

To me those numbers are not random. You can do similar thing with your billing and check it. I think phone numbers can be random in general, but if few customers calls you much more often then callers number will not be random. Consider using something other to vary prompt: random number, use time etc.

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