Thread: Probability Thanks: 0 Likes: 0

1. Probability

Hi, I'm quite new to excel and I need to find the probability of 3 different criteria. My criteria is finding the 'females' who live in 'london' and earn a net wage of 'greater than or equal to £495' can ANYONE help me with the command or formula I need to input to get the answer as I am loosing my mind!! Please! And thankyou in advance 😊  Reply With Quote

2. Re: Probability

Can you give some info on how your worksheet is structured, i.e. what are the columns, where is the data, etc?..  Reply With Quote

3. Re: Probability

You need to first split your 3 criterias. Calculate how many females over total people. I would use
Code:
countif(A1:A99;"Female")/count(A1:A99)
formula if people sex was in column A, from row 1 to 99. In another cell, calculate how many live in London using the same formula but with London. Third cell would be
Code:
Countif(C1:C100;">=495")/count(C1:C99)
if net salaries are in column C. You then multiply each percentage to get the probability it happens. You can calculate everything at once multiply directly but it is good to check each result the first time.  Reply With Quote

4. Re: Probability

Thankyou so much!!! I've been trying to do it all at the same time and it's just not going to work you're a diamond thankyou ��  Reply With Quote

5. Re: Probability

You are welcome. Thanks for the feedback.  Reply With Quote

6. Re: Probability

Two important things to remember about probability:

1. The probability of an event is a fraction: (#successful ways)/(# total ways)
2. The probability of TWO events both happening is an AND condition which requires multiplying the individual probabilities and
the probability of TWO events where EITHER could happen is an OR condition which requires adding the probabilities.  Reply With Quote

7. Re: Probability Originally Posted by kweaver Two important things to remember about probability:

1. The probability of an event is a fraction: (#successful ways)/(# total ways)
2. The probability of TWO events both happening is an AND condition which requires multiplying the individual probabilities and
the probability of TWO events where EITHER could happen is an OR condition which requires adding the probabilities.
Thankyou!!!  Reply With Quote

8. Re: Probability

You might want to look at a contingency table something like below.

Also, see this link

http://www.mathandstatistics.com/lea...and-dependence

 A B C D 1 >=495 <495 Total 2 Female London 3 Female Non-London 4 Male London 5 Male Non-London

Excel tables to the web >> Excel Jeanie HTML 4  Reply With Quote

User Tag List

Tags for this Thread

advance, â£495, criteria, loosing, probability  Posting Permissions

• You may not post new threads
• You may not post replies
• You may not post attachments
• You may not edit your posts
•