符号s、σ分别表示A、样本标准差和总体标准差B、样本标准差和方差C、总体标准差和方差D、样本方差和标准差E、总体方差和标准差

作者: rantiku 人气: - 评论: 0
问题 符号s、σ分别表示
选项 A、样本标准差和总体标准差 B、样本标准差和方差 C、总体标准差和方差 D、样本方差和标准差 E、总体方差和标准差
答案 A
解析 正确答案:A

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  • 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
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