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src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F3ff8f79dd5605ce1cfd153f3c76118db.png\">",[8,9,10,11],"9","15","21","27",[],[14,27,37,47,51,61,69,75,82,88],{"id":15,"source":5,"question":16,"options":17,"answer":22,"related":23,"type":24,"origin":25,"createTime":26},113835354,"下列表述中错误的是",[18,19,20,21],"期望是什平均值","方差是数据的差距值","期望越大,方差越大","方差也是一种期望",[],[],0,null,"2023-12-13T22:12:18+08:00",{"id":28,"source":5,"question":29,"options":30,"answer":35,"related":36,"type":24,"origin":25,"createTime":26},113835355,"若随机变量\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F968f3e020e54660cfda17add8873662e.png\">在区间\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fc9ab42a06b165e30cab5f328ec8d763c.png\">上服从均匀分布,\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fc000c6ba9988b56cbe2bdcf4a33d1e48.png\">,则区间\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fc9ab42a06b165e30cab5f328ec8d763c.png\">为",[31,32,33,34],"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fce0056e944fa2544d93aeb1ddc42ec6f.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F6211a6309238d0e5ae7d1dc48d5d6865.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fc9f2631b9f116e6fc5c80f99fc2a290f.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F132c3467cff3433337e499d1b1ccc655.png\">",[],[],{"id":38,"source":5,"question":39,"options":40,"answer":45,"related":46,"type":24,"origin":25,"createTime":26},113835357,"设随机变量\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F968f3e020e54660cfda17add8873662e.png\">的分布函数为\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F30fa3e328884d4e7603748f7b5c31f7d.png\">,则 \u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F75476492c8312f6cc376e5cece168084.png\">",[41,42,43,44],"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F4c2c5491af6dc4bc517515f812c01923.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fe1de9cabc4b912495885f625ceedc5f2.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F401ea451d082d7083427f988afb48e92.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F81bdfae5d2dcaca6fd4e56e0cf61d909.png\">",[],[],{"id":4,"source":5,"question":6,"options":48,"answer":49,"related":50,"type":24,"origin":25,"createTime":26},[8,9,10,11],[],[],{"id":52,"source":5,"question":53,"options":54,"answer":59,"related":60,"type":24,"origin":25,"createTime":26},113835363,"设\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F968f3e020e54660cfda17add8873662e.png\">与\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fd65d437507eb7187ad8a9ce23f52b05f.png\">为两个随机变量,则下列式子正确的是( )",[55,56,57,58],"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F0d1f0a884200c009791bf534942da852.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F1ce533e8ba5563eb6aeee57e10d114ca.png\">","\u003Cimg 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