Question 18 (multiple choice) · 2025 VCE Methods Exam 2 · Unstuck

The question in our own words · page 11

The paper graphs four probability mass functions on \(x=1,2,3,4,5\):

I \(0.1,\ 0.4,\ 0.4,\ 0.1,\ 0\)
II \(0.1,\ 0.2,\ 0.3,\ 0.4,\ 0\)
III \(0.45,\ 0.25,\ 0.15,\ 0.15,\ 0\)
IV \(0.2\) at each of the five values

Which two have the same mean?

AI and II
BI and IV
CII and III
DII and IV

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