Turn on thread page Beta
 You are Here: Home >< Maths

# Statistics watch

1. How do you calculate the mean on a histogram of one bar when you dont have the frequency density?
I worked out that each square equals 5 and that the class width of the bar i want to find the mean of is 2000.
The question says that " The histogram shows the results for 300 days. By considering the total area of the histogram, Find the mean number of days on which the daily income was between 4000 to 6000.
2. (Original post by Chelsea12345)
How do you calculate the mean on a histogram of one bar when you dont have the frequency density?
I worked out that each square equals 5 and that the class width of the bar i want to find the mean of is 2000.
The question says that " The histogram shows the results for 300 days. By considering the total area of the histogram, Find the mean number of days on which the daily income was between 4000 to 6000.
Can you put up the whole question, please?
3. Surely it is just: ((area of bar representing 4000-6000)/(total area of all bars))*300

Turn on thread page Beta

### Related university courses

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: January 28, 2017
Today on TSR

### Exam Jam 2018

Join thousands of students this half term

Poll
Useful resources

## Make your revision easier

### 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

Can you help? Study help unanswered threads

## Groups associated with this forum:

View associated groups

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