Paper 1 Section C Flashcards
1
Q
Why bar chart is appropriate for presenting data
A
Bar chart is used when data is nominal / categorical
It allows for comparison and looking for a difference
2
Q
Strength of independent measures design
A
Reduces demand characteristic
No need for time delay
3
Q
Why use chi squared
A
Investigating a difference
Nominal data used
Independent measures design
4
Q
How can you determine the appropriate degrees of freedom
A
Subtract 1 from number of rows
Subtract 1 from number of Column
Multiply the 2 answer together
5
Q
How do you know if it’s significant or not
A
Observed value must be equal or greater than the critical value
