# Summarising Data Flashcards

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1
Q

How to work out median from frequency tables

A

Do practice questions

2
Q

What do you need to work out the median from a frequency table

A

Cumulative frequency

3
Q

What is the formula for median for grouper continuous data

A

Do practice questions

4
Q

How to practice linear interpolation

A

PRACTISE QUESTIONS

5
Q

How to work out geometric mean

A

Practice questions

6
Q

How do you work out weighted mean

A

Do practise questions

7
Q

How to work out lower quartile

A

N+1
——
4

8
Q

What is the interquartile range

A

Upper quartile - lower quartile

9
Q

How to work out quartiles

A

Do practise questions

10
Q

What do you do if you are asked to work out quartiles from a table

A

11
Q

What is an interpercentile range

A

Different between two percentiles

12
Q

What is the equation for standard deviation

A

Practice questions

13
Q

What does standard deviation calculate

A

How much all the values deviate from the mean

14
Q

What is the equation for smaller outlier

A

LQ-1.5 x IQR

15
Q

What is the equation for larger outlier

A

UQ + 1.5 x IQR

16
Q

What indicates a positive skew

A

Mean>median>mode