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    Hi guys, I just cant get my mind around the questions on histograms when it gives you the height and width of a bar and asks you to work out the height and width of the next bar. Is it supposed to be difficult or is it fairly easy? I get 100% on pretty much everything else, it's just that one type of question


    I know how to work out the width.. the class width is normally double/half etc of the bar given. So you just double/half the width of the bar you need to work out.. but how do you work out the height? Could you explain in the simplest way possible.

    Here's an example:

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    The width represents the class width. The bigger the range of the class width the bigger the width of the bar.

    All bars are proportionally the same width so if you have a smaller class width, you have a narrower bar.

    Now, the height of the bar is the frequency density not the frequency. The area of the bar gives the frequency.

    Hope this is a starter for you.
 
 
 
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