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本文来源:曼朗 发布时间:2015-08-25 分享:
网络营销公司介绍简单合并比较虽然是一种更简单实用的比较方法,但如何更有效地设定比较基准也是一门学问。
上海网站推广介绍种方法叫“百分比评分均值比较法”,就是将指标的值都转化成百分比的形式,相当于该指标在100分制的条件下的得分有多少。如何将指标转化成为百分比的数值,一个很简单的方法就是所有的指标除以总体的更大值,这个方法对于所有大于0且分布不是特别离散的指标都是有效的。比如评价网站商品的质量,权衡商品的访问量和转化率这两个指标,我们知道转化率本身就是一个百分比,但因为分布一般集中在某个区间,所以也要进行转化,我们将每个商品的访问量和转化率分别除以所有商品中访问量和转化率的更大值四舍五入得到相应的百分比评分。
搜索整合营销介绍第二种方法叫“标准化指标合并比较法”,用Z标准化的方法消去各指标单位的影响后合并的方法。要注意的是对“逆指标”的处理,网站分析中典型的逆指标有Bounce Rate、Exit Rate等。因为标准化后的指标符合均值是0标准差是1的正态分布,所以对逆指标的处理只需要对标准化后的数据乘以-1就可以了。同样使用了简单平均的方法,将各指标标准化后取均值进行比较,我们就可以轻而易举地看出那个方案的效果更佳,这也是一种“目标决策”的更简单应用。
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