y_var.hlp

是一个经济学管理应用软件 很难找的 但是经济学学生又必须用到

{smcl}
{p 0 4}
{help contents:Top}
> {help y_stat:Statistics}
> {help y_sumtest:Summary statistics & tests}
> {help y_mean:Mean, median, ... of random variable}
{bind:> {bf:Variance equality tests}}
{p_end}
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{title:Help file listings}

{p 4 8 4}
{bf:{help sdtest:Variance equality tests}}{break}
    one-sample and two-sample tests

{p 4 8 4}
{bf:{help robvar:Robust tests for equality of variances}}{break}
    Levene's statistic and two adaptations that use the median and
    10 percent trimmed mean in place of the mean

{hline}