Normal Distribution Flashcards
1
Q
What is the notation for a random variable X with normal distribution?
A
X ~ N (Mean, standard deviation^2)
Note that standard deviation^2 is the variance
2
Q
How can random variable X be transformed into Z?
A
Z = (X - mean) / standard deviation
3
Q
What do the front tables show you the probability of?
A
P(Z◀️z)
Probability of Z being smaller than z
4
Q
Which tables can you find the P(Z>z)?
A
The back tables.
5
Q
Name two features of normal distribution
A
- most values are close to the mean
- the skew is symmetrical
