Numerical and statistical skills 2 (Edexcel GCSE Geography A): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What does the mode represent in a data set?
What does the mode represent in a data set?
The value appearing most frequently
What is the mode of: 4, 5, 9, 7, 4, 4?
What is the mode of: 4, 5, 9, 7, 4, 4?
4
How is the mean calculated?
How is the mean calculated?
Add all values, divide by number of values
What is the mean of: 4, 5, 9, 7, 4, 4?
What is the mean of: 4, 5, 9, 7, 4, 4?
5.5
What is the median?
What is the median?
Middle value when ordered ascending
For the ordered data 4, 4, 4, 5, 7, 9, what is the median?
For the ordered data 4, 4, 4, 5, 7, 9, what is the median?
4.5
How is the range calculated?
How is the range calculated?
Largest value minus smallest value
Why is range sensitive to outliers?
Why is range sensitive to outliers?
A single extreme value can greatly alter it
What is the modal class in grouped data?
What is the modal class in grouped data?
Group with highest frequency
What formula finds the lower quartile position?
What formula finds the lower quartile position?
(n+1)/4
For data 2, 5, 5, 7, 9, 11, 13, what is the interquartile range?
For data 2, 5, 5, 7, 9, 11, 13, what is the interquartile range?
6
Why is IQR more reliable than range for skewed data?
Why is IQR more reliable than range for skewed data?
Less affected by extreme values