1/ Explainthe difference between qualitative and quantitative variables. Give an example of qualitative and quantitative var
Qualitative variables: The subjects are obsevable, but they are non-numeric
Ex: The apple is red, but one cannot count how many re
1
a
b
c
d
e
a)
b)
c)
a
b
c
d
nCr = n!/ (r! . (n-r)!) =
15C10 = 15! / (10! . (15-10)!)= 3003
2
0.5
P(>200)=50/500=
0.1
0-20 and 20-50 are mutually exclusive
1
P(<50) = P(0-20) + P(20-50) = 2/5 + 1/5 = 0.6
P(<200) = 1 - P(>200) = 1-0.1 = 0.9
3
P(k1) = 4/52
Henry Dannis
Chapter 13
1/
A group of statistical techniques used to measure the relationship between 2 variables
2/
Provide us with a quantitative measure of the strenght and direction of the relationship
between 2 random variables x and y
1The value of