Biostatistics 1 Flashcards
1
Q
Descriptive Stats
A
Summary stats
Do NOT generalize beyond the data
2
Q
Inferential Stats
A
Generalize from a sample
3
Q
Range
A
Only describing the sample
Cant infere anything
4
Q
Variance
A
Square root = standard deviation
Only if normally distributed
5
Q
Sample size increase
A
Variance decreases
6
Q
****Confidence intervals
A
Variance is the most important thing!!!!!
How confident are you that the true effect varies between the two reported numbers
7
Q
What type of data is smoking status?
A
Nomimal
8
Q
What about cancer stages?
A
Ordinal
9
Q
Kirtosis
A
How peaked is your curve?
Very = (+)
10
Q
Define Bionomial
A
Probability for the occurrence of one or the other of only 2 possible outcomes
11
Q
Define Poisson
A
Discrete frequency distribution of the number of times a rare even occurs
