Mixed Flashcards
1
Q
Coding
A
Standard deviation don’t plus or minus, only divide
2
Q
Extrapolation
A
An estimation outside the data given so less accurate and the pattern could change.
3
Q
Cleaning the data
A
Removing anomalies
4
Q
Frequency density
A
Frequency/class width Area is proportionate to frequency
5
Q
Frequency polygon
A
Joining the middle of the top of each bar in a histogram
6
Q
When comparing data don’t …
A
Use mean and interquartile range or standard deviation and median. Don’t go together.
7
Q
Bivariate data
A
Data that has two variables (represented as a scatter graph)
8
Q
Casual data relationship
A
A change to one variable causes a change to another. Even if they show correlation it doesn’t mean they have a casual relationship (use common sense within context).
9
Q
Only make predictions…
A
From x to y axis. (independent to dependent variable)
