Summarising Data Flashcards
How to work out median from frequency tables
Do practice questions
What do you need to work out the median from a frequency table
Cumulative frequency
What is the formula for median for grouper continuous data
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How to practice linear interpolation
PRACTISE QUESTIONS
How to work out geometric mean
Practice questions
How do you work out weighted mean
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How to work out lower quartile
N+1
——
4
What is the interquartile range
Upper quartile - lower quartile
How to work out quartiles
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What do you do if you are asked to work out quartiles from a table
Don’t add one to N
What is an interpercentile range
Different between two percentiles
What is the equation for standard deviation
Practice questions
What does standard deviation calculate
How much all the values deviate from the mean
What is the equation for smaller outlier
LQ-1.5 x IQR
What is the equation for larger outlier
UQ + 1.5 x IQR
