Year 11 General
Univariate Data Analysis
Comparing Data For A Numerical Variable Across Two Or More Groups
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Questions
Question 1
177791
The parallel dot plots below show the daily maximum temperatures (in °C) for Brisbane and Perth over 15 days.
(ii) Calculate the range for each city.
(iii) State the mode for each city.
(iv) Which city's data shows a visually-isolated extreme value (potential outlier)?
(i) Brisbane median = 27°C, Perth median = 28°C; Perth higher by 1°C. (ii) Brisbane range = 11°C, Perth range = 20°C; Perth has greater range. (iii) Brisbane mode = 26°C, Perth mode = 28°C; Brisbane more concentrated around its mode. (iv) Brisbane shows the most visually-isolated extreme value (33°C sits 2°C apart from main 22-31°C cluster).
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