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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: Gloamglozer on June 29, 2009, 08:28:42 pm

Title: Bucket Width
Post by: Gloamglozer on June 29, 2009, 08:28:42 pm: When drawing a histogram on a TI-89 Titanium, can someone please explain to me what "bucket width" means?

I looked in the TI-89 Graphics Calculator Supplement and it says:

Quote
Note: 'Bucket width' means 'interval width'. Choose a minimum of five intervals and divide the range of values by the number to get the 'bucket width'. For six intervals, the bucket width is $\frac {25-4}{6}$ ...

The thing I don't understand is that if you're choosing 5 intervals, why are you dividing by 6?
Title: Re: Bucket Width
Post by: plato on July 02, 2009, 11:25:40 pm: Quote from: Gloamglozer on June 29, 2009, 08:28:42 pm
When drawing a histogram on a TI-89 Titanium, can someone please explain to me what "bucket width" means?

I looked in the TI-89 Graphics Calculator Supplement and it says:

Quote
Note: 'Bucket width' means 'interval width'. Choose a minimum of five intervals and divide the range of values by the number to get the 'bucket width'. For six intervals, the bucket width is $\frac {25-4}{6}$ ...

The thing I don't understand is that if you're choosing 5 intervals, why are you dividing by 6?

The last sentence says it is for six intevals, not five. The five belongs to the second sentence only. What a stupid bit of confusion to put in their Ti manual.
Title: Re: Bucket Width
Post by: Gloamglozer on July 03, 2009, 11:32:21 am: Oh, well that's a bit silly. I would have thought they would have used 5 intervals since they were talking about 5 intervals before.

Thanks for clearing it up. I get it now. :D