# Thread: Drawing Simple Bar Charts (Stats Question)

1. ## Drawing Simple Bar Charts (Stats Question)

Hi there,

I'm writing a small program to draw bar and pie charts. I have a question regarding weights (or frequencies) of values.

If I have the following data:

Code:
```VAL   FREQ
5       1
2       1
3       2*
4       1```
Typically, what do I plot for the bar of the third value?

Do I plot a single bar of height 6, or two bars of height 3?

If I were two plot two separate bars, what would I plot if the frequency was a fractional number?

Thanks

2. > Do I plot a single bar of height 6, or two bars of height 3?

I'd do 2 of height 3. Having one of height 6 doesn't make much sense

> If I were two plot two separate bars, what would I plot if the frequency was a fractional number?

I don't follow.

3. >I don't follow

If the third value had a non-integer weight of 2.5, then I can't plot 2 and a half bars.

Or does my question simply not make sense because no one would ever enter a non-integer weight? In which case, should I simply round to the nearest integer and stop worrying?

4. That's kinda what I meant. Seems it'd be difficult to have a non-integer weight. Even if you did, you could change the proportions so it does.

IE

Code:
```VAL   FREQ
5       1
2       1
3       2.5
4       1```
Code:
```VAL   FREQ
5       2
2       2
3       5
4       2```
I hate stats, though, so I don't know if this would cause more problems than it solved. You could also put some sort of a note on that, but that's really up to you.

5. >I hate stats

They certainly make you think.

I think I'll split non-unity weights into multiple bars, while rounding to the integer. Unless, of course, someone can suggest why plotting weighted values on the y-axis would be useful. At the moment, I agree that it doesn't seem to make any sense.

Thenks for replyling Govtcheez. That helped!