Quartiles and Interquartile Range (HSC SSCE Mathematics Advanced): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What percentage of the data does the lower quartile () separate from the rest?
What percentage of the data does the lower quartile () separate from the rest?
The lowest 25%
What is the critical first step before finding quartiles?
What is the critical first step before finding quartiles?
Arrange data in ascending order
How is the interquartile range (IQR) calculated?
How is the interquartile range (IQR) calculated?
Why is the IQR considered a robust measure of spread?
Why is the IQR considered a robust measure of spread?
Not affected by extreme values
Which values comprise the five-number summary?
Which values comprise the five-number summary?
Min, , , , Max
In a box plot, what does the box itself contain?
In a box plot, what does the box itself contain?
The middle 50% of the data
Using the IQR criterion, when is a score classified as an outlier?
Using the IQR criterion, when is a score classified as an outlier?
More than IQR from or
When finding quartiles with an odd number of scores, what happens to the median?
When finding quartiles with an odd number of scores, what happens to the median?
It is omitted from both sublists
When should median and quartiles be used instead of mean and standard deviation?
When should median and quartiles be used instead of mean and standard deviation?
When outliers might distort the picture
How is data described when it is 'skewed to the right'?
How is data described when it is 'skewed to the right'?
The tail extends further to the right