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Statistics版 - 这个case interview到底怎么搞啊?谢谢啦
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进入Statistics版参与讨论
1 (共1页)
d*********k
发帖数: 1239
1
Now we would like to compare two approaches: (you should have these two
listed
in question I)
Tel-marketing (make direct phone calls to potential customers)
Direct Mail (send mails to potential customers)
Suppose the cost will be $1.00 per call, $0.50 per mail.
Suppose the contact rate will be 50% for phone calls (assume that
each call cost $1.00 no matter the customer is contacted or not),
and 100% for direct mail.
Suppose the successful rate for those made through phone calls is 6%
for direct mail is 2%.
Suppose the profit for bringing in each customer is $100.
Which approach is better, and why?
m*******1
发帖数: 855
2
LOL, 这个网上答案不到处都是吗. 搜一下就出来了
d*********k
发帖数: 1239
3
就是搜不到才来这里问的啊~~
给个提示?谢谢啦

【在 m*******1 的大作中提到】
: LOL, 这个网上答案不到处都是吗. 搜一下就出来了
r***v
发帖数: 12658
4
fixed number of target N:
for phone calls:
profit=N*50%*6%*100-N*1=2N
for direct mail:
profit=N*2%*100-N*0.5=1.5N
fixed amount of money M
for call
profit = (M/1)*50%*6%*100-M=2M
for direct mail
profit = (M/0.5)*2%*100-M=3M

【在 d*********k 的大作中提到】
: Now we would like to compare two approaches: (you should have these two
: listed
: in question I)
: Tel-marketing (make direct phone calls to potential customers)
: Direct Mail (send mails to potential customers)
: Suppose the cost will be $1.00 per call, $0.50 per mail.
: Suppose the contact rate will be 50% for phone calls (assume that
: each call cost $1.00 no matter the customer is contacted or not),
: and 100% for direct mail.
: Suppose the successful rate for those made through phone calls is 6%

m*******1
发帖数: 855
5
需要假设个前提. 就是使用相同的buget? or market相同的人数. 然后就是简单的算术
了.但是两种情况算出的结果不一样
d*********k
发帖数: 1239
6
谢谢啦,不过我觉得是不是要加另外一种情形啊?
假设 amount of available money is M and number of available target is N:
您的第一组方程式在 N<=M/1的情况的比较
您的第二组方程式在 N>=M/0.5的情况的比较
是不是要再加一种情况是M/0.5>N>=M/1的时候的比较?
谢谢啦

【在 r***v 的大作中提到】
: fixed number of target N:
: for phone calls:
: profit=N*50%*6%*100-N*1=2N
: for direct mail:
: profit=N*2%*100-N*0.5=1.5N
: fixed amount of money M
: for call
: profit = (M/1)*50%*6%*100-M=2M
: for direct mail
: profit = (M/0.5)*2%*100-M=3M

d*********k
发帖数: 1239
7
是不是分三种情况?
假设amount of available money is M and number of available target is N:
N<=M/1的情况的比较
N>=M/0.5的情况的比较
M/0.5>N>=M/1的时候的比较
谢谢啦

【在 m*******1 的大作中提到】
: 需要假设个前提. 就是使用相同的buget? or market相同的人数. 然后就是简单的算术
: 了.但是两种情况算出的结果不一样

d*********k
发帖数: 1239
8
re 一下
1 (共1页)
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