增大样本含量,理论上可使其变小的是(  )A.样本的变异系数B.样本的标准差C.均数的抽样误差D.样本均数E.总体均数

作者: rantiku 人气: - 评论: 0
问题 增大样本含量,理论上可使其变小的是(  ) A.样本的变异系数 B.样本的标准差 C.均数的抽样误差 D.样本均数 E.总体均数
选项
答案 C
解析

猜你喜欢

发表评论
更多 网友评论0 条评论)
暂无评论
错误啦!

错误信息

  • 消息: [程序异常] : MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.
  • 文件: /twcms/kongphp/cache/cache_redis.class.php
  • 位置: 第 85 行
    <?php echo 'KongPHP, Road to Jane.'; ?>