For a dataset XXX, the kurtosis is defined as β2=μ4σ4\beta_2 = \frac{\mu_4}{\sigma^4}β2=σ4μ4. What does β2=3\beta_2 = 3β2=3 represent?
Leptokurtic distribution
Platykurtic distribution
Mesokurtic (Normal) distribution
Uniform distribution