S1 Flashcards
1
Q
What’s an explanatory variable?
A
Independent variable
2
Q
What’s a response variable?
A
Dependent variable
3
Q
What is the use of product moment coefficient?
A
To quantify the linear correlation between two variables (only linear tho)
4
Q
Combined mean
A
(N x mean1) + (n2 x mean2) /total n
N= size
5
Q
Outlier
A
Result that is too far away that interferes with the range and mean
6
Q
Frequency density
A
Frequency / class width
7
Q
What do you use when skewed?
A
IQR and median
8
Q
What do you use when symmetrical or slightly skewed?
A
mean and standard deviation
9
Q
Experimental probability
A
No. Of times event happened/ no. Of trials
10
Q
Theoretical probability
A
No. Of ways event could occur/no. Of possible events
