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# Maths Probability Histogram problem watch

1. Hi, I have problem with this IGSCE exam exercise. I calculated the frequency density but I don't know how to translate it in cm. I understood that it has to be divided by 2 to get the result, but I don't know the reason for it. Can anybody help me please? I'm kinda stuck.

Cheers,

Keven.
2. (Original post by KevenM8)
Hi, I have problem with this IGSCE exam exercise. I calculated the frequency density but I don't know how to translate it in cm. I understood that it has to be divided by 2 to get the result, but I don't know the reason for it. Can anybody help me please? I'm kinda stuck.

Cheers,

Keven.
For the third class, the frequency density is . But you are told that the height of the bar is 6cm.

This means that 1cm of bar height represents a frequency density of 2. In other words the scale is

1cm : frequency density of 2

Does this make sense?
3. (Original post by Notnek)
For the third class, the frequency density is . But you are told that the height of the bar is 6cm.

This means that 1cm of bar height represents a frequency density of 2. In other words the scale is

1cm : frequency density of 2

Does this make sense?
Yep, it makes totally sense.. just me being always... me

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