Skewness (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 indicates a positively skewed distribution?
What indicates a positively skewed distribution?
Mean > Median > Mode
How is skewness visually assessed?
How is skewness visually assessed?
By box plot inspection
What does a skewness value of 0 indicate?
What does a skewness value of 0 indicate?
Perfect symmetry
In a negatively skewed distribution, where is the median?
In a negatively skewed distribution, where is the median?
Closer to UQ
What is the formula for calculating skewness?
What is the formula for calculating skewness?
Skew = 3(mean - median) / SD
What does a positive skew value indicate?
What does a positive skew value indicate?
Data is positively skewed
In a symmetrical distribution, how do the measures of central tendency relate?
In a symmetrical distribution, how do the measures of central tendency relate?
Mean = Median = Mode
What does a long tail in a distribution indicate about data frequency?
What does a long tail in a distribution indicate about data frequency?
Values are rare in one direction
If the median is closer to LQ, what type of skew is present?
If the median is closer to LQ, what type of skew is present?
Positive skew
In a negatively skewed distribution, what is the order of mean, median, and mode?
In a negatively skewed distribution, what is the order of mean, median, and mode?
Mean < Median < Mode