uence of values
<A HREF = "shist.m        ">shist          </A>: spline-smoothed plot of a histogram
<A HREF = "spacf.m        ">spacf          </A>: find sample partial autocorrelation coefficients 
<A HREF = "spacf_d.m      ">spacf_d        </A>: demo of spacf() 
<A HREF = "stdc.m         ">stdc           </A>: standard deviation of each column
<A HREF = "sumc.m         ">sumc           </A>: compute sum of each column
<A HREF = "tally.m        ">tally          </A>: calculate frequencies of distinct leve