# How to make a histogram

1. Jul 31, 2010

### mcknia07

I am trying to help my brother on his Stats homework, but for the life of me, I can't rememeber how to make a histogram. He has the answers to compare to, but is unsure how they got to them, as am I. It's been so long since I have done this stuff, I need a little refresher. Google is not helping so much like it normally does, lol.

2. Jul 31, 2010

### Proton Soup

Re: Histogram...

it's just a frequency chart. divide the x-axis into equally-spaced segments, and place a bar there. height of bar is number of data points that fall in that interval.

3. Jul 31, 2010

### DanP

Re: Histogram...

http://en.wikipedia.org/wiki/Histogram

self explanatory

4. Jul 31, 2010

### cronxeh

Re: Histogram...

1. Determine how many bins you want to implement, for example, 10 bins: 1-10, 11-20, 21-30, 31-40, 41-50, 51-60, 61-70, 71-80, 81-90, 91-100.

2. Create a graph y vs x. y will be the number of times a number appears that belongs in either one of the bins. x will be the bin number starting with lowest number. (x values: 1, 11, 21, 31, 41, 51, 61, 71, 81, 91)

3. Count and fill out the graph.

5. Aug 1, 2010

### mcknia07

Re: Histogram...

Thanks everyone :) I think I understand it now.