Stat Week#10

For Gender and Education level we use

• Chi Square

• two-way table

• Joint bar

• all three

For Salary and Education level (non-binary) we use

• t-test

• F-test

• Chi-Square

• cov/corr

With X increases, Y goes down, then cov(X,Y) is

• Positive

• Negative

• 0

• None

the corr(X,Y)=1.2 then they are directly related

• T

• F

The cov(X,Y)>0 then we cannot conclude that corr(X,Y) is also positive.

• T

• F

corr>0 and cov>0

• T

• F

the p-value of chi-square is 0.01, then the association is

• v strong

• moderate

• weak

the corr=-0.9, then the correlation is

• Strong

• Meduim

• Weak