Transforming data (AQA GCSE Statistics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What happens to averages during transformation?
What happens to averages during transformation?
They change in the same way
What is the correct method to transform data values consistently?
What is the correct method to transform data values consistently?
Apply the same operation to all
What is the first step in data transformation?
What is the first step in data transformation?
Transform each data value
What is the new mean after a 20% increase?
What is the new mean after a 20% increase?
Multiply by 1.2
What is the final step after subtracting 10 from a number in a transformation?
What is the final step after subtracting 10 from a number in a transformation?
Add 10 to the result
What is the correct formula to calculate the mean of a data set?
What is the correct formula to calculate the mean of a data set?
Sum of values divided by count
How do you find the new median after a 5% increase?
How do you find the new median after a 5% increase?
Multiply by 1.05
What is the reverse of dividing by 1000?
What is the reverse of dividing by 1000?
Multiply by 1000
What is the correct multiplier for a 15% increase?
What is the correct multiplier for a 15% increase?
1.15
Why is data transformation useful?
Why is data transformation useful?
It makes calculations easier