You are Here: Home >< Maths

# Stat Tables Help Watch

1. Hi,

Is there any way of using, say, a cumulative binomial distribution table when the probability you have is between two of the possible values given in the table? For example, what happens if your p=1/3 and you're given p=0.30 and p=0.35.

Can the tables still be used? If so, is the approximation good or rubbish?

Thanks
2. you could get a rough idea but in the exams this is not the method expected.

if p = 0.27 for instance & n = 8 they might ask for P( X <=1 ) in which case you would do

8C0 * 0.270* 0.738 +
8C1 * 0.271* 0.737
3. Ok, thanks bear.

I know how to use the formulas, I was just curious as to whether or not you're expected to know how to use some type of linear interpolation on the tables or something.

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: April 16, 2013
Today on TSR

### Should I ask for his number?

Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE