Continuous random variables Flashcards
1
Q
A continuous random variable x can take on any value within:
A
A given range
2
Q
What are the two parameters of the normal distribution?
A
- The mean
- The variance
3
Q
What does the variance of normal distribution determine?
A
The spread around the mean
4
Q
Why do we ‘standardise’ a normal distribution?
A
It’s a useful way of inputting data onto the same scale
5
Q
In a chi squared distribution, k is the:
A
degrees of freedom
6
Q
As the degree of freedom increases:
A
The skewness of the pdf becomes less marked
