Comparing data sets (AQA GCSE Statistics): Flashcards
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10 cards from this deck
What is the median of 4, 8, 15, 16, 23?
What is the median of 4, 8, 15, 16, 23?
Median = 15 (middle value in sorted list)
Calculate the range of 5, 10, 15, 20.
Calculate the range of 5, 10, 15, 20.
Range = 20 - 5 = 15
What does a higher standard deviation indicate?
What does a higher standard deviation indicate?
More variation in the data set.
What is the median of the numbers 3, 7, 8, 12, 14?
What is the median of the numbers 3, 7, 8, 12, 14?
Median = 8 (middle value in ordered list)
What is the method to compare means of two groups?
What is the method to compare means of two groups?
Use t-tests to assess the significance of the difference.
What is the interquartile range?
What is the interquartile range?
IQR = Q3 - Q1, measures data spread.
How to interpret a box plot's median?
How to interpret a box plot's median?
The line inside the box shows the median value.
What does a lower quartile represent?
What does a lower quartile represent?
The 25th percentile of the data set.
Why use median over mean for skewed data?
Why use median over mean for skewed data?
Median is less affected by outliers.
What does a box plot show about data spread?
What does a box plot show about data spread?
It shows quartiles and overall distribution shape.