Discuss circumstances under which it is preferable to use relative frequency dis

Question

• Discuss circumstances under which it is preferable to use relative frequency distributions instead of frequency distributions?
• Why shouldn’t classes overlap when one summarizes continuous data?
• Discuss the advantages and disadvantages of histograms versus stem-and-leaf plots.

• Discuss circumstances under which it is preferable to use relative frequency distributions instead of frequency distributions?
• Why shouldn’t classes overlap when one summarizes continuous data?
• Discuss the advantages and disadvantages of histograms versus stem-and-leaf plots.

Explanation / Answer

(1) Use frequency distributions if we focus on comparing different classes where as use relative frequency distributions if we focus on comparing different classes to the whole.

(2) If classes overlap when one summarises continuous data, then some observations will be counted in more than one class.This means thatc ertain observations will end up in more than one bar of a histogram, which will misrepresent the data.

(3) Advantages of stem-and-leaf plots:

Disadvantages of stem-and-leaf plots:

Advantages of Histogram:

Disadvantages of Histogram::

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