Statistics Flashcards
1
Q
Mean
A
Average
2
Q
Median
A
Middle value
i.e 22, 26,36,39,41
36 = median
3
Q
Mode
A
Most often value
22, 333, 5,6,7
333 = mode.
4
Q
Standard deviation [SD] calculation
A
SD = mean [+ or -] SD
5
Q
Normal distribution formula
A
Mean - [2 x SD]
6
Q
Standard deviation constants [3]
A
x D = 68.5% of data
x D = 95.4% of data
x D = 99.7% of data
x D = how many deviations.
7
Q
Confidence Interval
A
Spread of values of true population
Same boundaries
Probability of difference of the outcome by chance
8
Q
Odds and risk ratio
A
Odds of it happenig
