# Summarising Data Flashcards

How to work out median from frequency tables

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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

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How do you work out weighted mean

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How to work out lower quartile

N+1

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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