# Percentages and Stats

• Oct 7th 2009, 04:30 PM
daveb9874
Percentages and Stats
Hi, I have a question in regards to the following.

There are two sets of Data - A, and B

In Data Set A we have details regarding car insurance policies for an insurance company over a defined period (eg 2004 - 2009)

In Data Set B we have details regarding insurance claims over a defined period (eg 2007 - 2009) for the same insurance company.

I would like to check if the following calculations would make sense.

Data Set A has been sorted via customer segments. Hence we can say that customers in the (mature professional age 25-30) accounted for 25% of the customer base for the insurance company.

Data set B has also been sorted via customer segments. Here we find that customers in the (mature professsional age 25-30) accounted for 10% of the claims.

Would it make sense to then conclude that the expected number of claims from the mature professional segment would be ( 10%*25%) = 2.5%

cheers
d
• Oct 8th 2009, 06:31 AM
CaptainBlack
Quote:

Originally Posted by daveb9874
Hi, I have a question in regards to the following.

There are two sets of Data - A, and B

In Data Set A we have details regarding car insurance policies for an insurance company over a defined period (eg 2004 - 2009)

In Data Set B we have details regarding insurance claims over a defined period (eg 2007 - 2009) for the same insurance company.

I would like to check if the following calculations would make sense.

Data Set A has been sorted via customer segments. Hence we can say that customers in the (mature professional age 25-30) accounted for 25% of the customer base for the insurance company.

Data set B has also been sorted via customer segments. Here we find that customers in the (mature professsional age 25-30) accounted for 10% of the claims.

Would it make sense to then conclude that the expected number of claims from the mature professional segment would be ( 10%*25%) = 2.5%

cheers
d

Ignoring the fact that the time windows are not the same.

Suppose there are 1000 customers, of whom 250 are matures.

Also if there are 20 claims, 2 of which will be from matures.

So the claims per mature would be 2/250<1%

CB