Measures of Dispersion (Grade 10 NSC Matric Mathematics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the range of the data set: {3, 7, 12, 15, 8, 5}?
What is the range of the data set: {3, 7, 12, 15, 8, 5}?
12
Why is the range sensitive to outliers in a data set?
Why is the range sensitive to outliers in a data set?
It only considers extreme values
For , what rank corresponds to the 75th percentile using ?
For , what rank corresponds to the 75th percentile using ?
15.25
The median is equivalent to which percentile?
The median is equivalent to which percentile?
50th percentile
What percentile is the first quartile (Q1)?
What percentile is the first quartile (Q1)?
25th percentile
If Q1 = 12 and Q3 = 28, what is the interquartile range?
If Q1 = 12 and Q3 = 28, what is the interquartile range?
16
How many equal groups do deciles divide an ordered data set into?
How many equal groups do deciles divide an ordered data set into?
Ten groups
Why is IQR more robust than range when dealing with outliers?
Why is IQR more robust than range when dealing with outliers?
It focuses on the middle 50% of data
What do you do when a rank is not a whole number?
What do you do when a rank is not a whole number?
Take value halfway between two values
What must you do before calculating any percentile-based measures?
What must you do before calculating any percentile-based measures?
Sort the data set