HSC Standard Maths Resources

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2.1.4 Dot-Plot

This section is another way of looking at histogram. The skill of solving the question remains unchanged, the only thing different is the method of reading the data.

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Example 1

The dot plot below shows the result of a survey.

Calculate i) mean, ii) mode, iii) median, iv) lower quartile, v) upper quartile, vi) interquartile range, vii) range, viii) standard deviation

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