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Frequency distribution
1. Based on a listing of frequency or occurences of the scores according to classes or categories.
2. It shows the frequency of individuals, cases, events or scores of a sample, arranged and tabulated in the classes into which the variable under investigation has been classified.
3. Each set of classes is paired with a number that represents its observed frequency.
Pie chart
1. A way of presenting proportional data in the form of a circle with each category represented as a slice.
2. Used for - graphical representation of frequency distribution of nominal variables.
3. How to make
4. Inconvenient - For comparing more than one sample and for samples that have too many classes or too low frequencies.
Bar Diagram
1. Pictorial representation in which frequency of attribute is represented as a bar.
2. Length of the bar is proportional to the value represented.
3. Consists of sets of bars or columns
4. Simple bar diagram
5. Multiple bar diagram
6. Proportional bar diagram
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