If I have the following Hypothese:

H1: Women tend to watch romantic films more than men 

Apparently it's a chi-square because I'm measuring relationships between expected frequency and Observed frequency and also because Gender is on the nominal level. But what if this is designed for a survey in which questions are on the nominal, Ordinal and interval level (Likert scale - differential sementic) will the outcome still be a Chi-square?

If u, v, w ∈ R n , then span(u, v + w) = span(u + v, w)

A quadratic function has its vertex at the point (−7,2)${\displaystyle (-7,2)}$. The function passes through the point (8,3)${\displaystyle (8,3)}$. When written in vertex form, the function is f(x)=a(x−h)2+k${\displaystyle f\left(x\right)=a{(x-h)}^2+k}$, where:

In the relation in the table below, write a value that will make the relation not   represent a function.