Numerical and Statistical Skills (OCR GCSE Geography B (Geography for Enquiring Minds)): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
Why is the median useful when a dataset contains extreme values?
Why is the median useful when a dataset contains extreme values?
It is not affected by outliers
What is the mean of this dataset: 4, 8, 8, 15, 16, 23, 42?
What is the mean of this dataset: 4, 8, 8, 15, 16, 23, 42?
16.6
In the dataset 4, 8, 8, 15, 16, 23, 42, which value is the mode?
In the dataset 4, 8, 8, 15, 16, 23, 42, which value is the mode?
8
Using the formula Range = Maximum - Minimum, what is the range of 4, 8, 8, 15, 16, 23, 42?
Using the formula Range = Maximum - Minimum, what is the range of 4, 8, 8, 15, 16, 23, 42?
38
What does the interquartile range (IQR) measure?
What does the interquartile range (IQR) measure?
The spread of the middle 50% of data
Robin population increases from 15 to 23. What is the percentage increase?
Robin population increases from 15 to 23. What is the percentage increase?
53.3%
The 75th percentile is equivalent to which quartile?
The 75th percentile is equivalent to which quartile?
Upper quartile (Q3)
When describing correlation in an exam, what must you always state?
When describing correlation in an exam, what must you always state?
Both direction and strength
What indicates a strong correlation on a scatter graph?
What indicates a strong correlation on a scatter graph?
Points cluster tightly around line of fit
Why is interpolation more reliable than extrapolation?
Why is interpolation more reliable than extrapolation?
It estimates within the known data range