Problems With Collected Data

Question 1

Why might some data be outliers

Answer 1

Could be accurate but extreme values
Incorrectly recorded

Question 2

Things to look out for

Answer 2

Outliers
Missing data
Written in the wrong format or order
Different units or symbols used

Question 3

When there are problems with the Data what is it

Answer 3

It is raw data

Question 4

What does cleaning the data mean

Answer 4

Fixing problems - by removing/correcting inaccuracies and missing data, cleaning with genuine outliers, putting the data in the same format and removing units and symbols

Question 5

What might removing the outliers do

Answer 5

Lead to inaccurate results so should try and record it again but may be time consuming