Averages from grouped data (Edexcel GCSE Statistics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
How is the median position calculated?
How is the median position calculated?
n/2
What does linear interpolation assume within the median class?
What does linear interpolation assume within the median class?
Values are evenly distributed
When finding the median class, what should you do after calculating the median position?
When finding the median class, what should you do after calculating the median position?
Count cumulative frequencies
Why is the area of a histogram bar important in median estimation?
Why is the area of a histogram bar important in median estimation?
It reflects the frequency
What is the final step to estimate the median value?
What is the final step to estimate the median value?
Add width to lower boundary
What is the key formula for the median position?
What is the key formula for the median position?
n/2
Why must you check cumulative frequencies carefully?
Why must you check cumulative frequencies carefully?
To identify the median class
What is a common mistake when estimating the median?
What is a common mistake when estimating the median?
Choosing the wrong class boundary
Why is linear interpolation used in median estimation?
Why is linear interpolation used in median estimation?
To interpolate between class points
What information is essential for calculating an estimated median?
What information is essential for calculating an estimated median?
Total frequency and class boundaries