<E_d> = 0.48

<E> = 9.52

<E>/N = 0.238

From equipartition, <E>/N = kT/2 (one dimension)

P(E_d) = exp(-bE_d)/Z

<E_d> = kT

slope = (6.5 - 3.5)/(0.5 - 2) = -2

b = 2

kT = 0.5