Parameters

Method of moments

Folk and Ward’s method

Description

Arithmetic

(µm)

Geometric

(µm)

Logarithmic

phi (ϕ)

Geometric

(µm)

Logarithmic

phi (ϕ)

Mean

642.7

598.7

0.740

590.8

0.759

Coarse Sand

Sorting

235.5

1.415

0.501

1.408

0.494

Well Sorted

Skewness

1.524

−0.090

0.090

−0.164

0.164

Fine Skewed

Kurtosis

8.766

3.372

3.372

1.089

1.089

Mesokurtic