假设样本 [img=114x23]1803da262270530.png[/img]来自正态总体[img=65x27]1803da262b62273.png[/img]。总体数学期望[img=11x18]1803da2633a9f63.png[/img]已知,则下列估计量中是总体方差[img=18x22]1803da263c1f9fe.png[/img]的无偏估计是()
A: [img=116x60]1803da2649c29f7.png[/img]
B: [img=131x60]1803da265448cc8.png[/img]
C: [img=135x60]1803da265fade33.png[/img]
D: [img=127x60]1803da266a4238c.png[/img]
A: [img=116x60]1803da2649c29f7.png[/img]
B: [img=131x60]1803da265448cc8.png[/img]
C: [img=135x60]1803da265fade33.png[/img]
D: [img=127x60]1803da266a4238c.png[/img]
举一反三
- 假设样本 [img=114x23]1803da262270530.png[/img]来自正态总体[img=65x27]1803da262b62273.png[/img]。总体数学期望[img=11x18]1803da2633a9f63.png[/img]已知,则下列估计量中是总体方差[img=18x22]1803da263c1f9fe.png[/img]的无偏估计是() 未知类型:{'options': ['', '', '', ''], 'type': 102}
- 假设样本 [img=114x23]1803573b098c991.png[/img]来自正态总体[img=65x27]1803573b11c8739.png[/img]。总体数学期望[img=11x18]1803573b1abb9ee.png[/img]已知,则下列估计量中是总体方差[img=18x22]1803573b22c49ad.png[/img]的无偏估计是() A: [img=116x60]1803573b2d48db8.png[/img] B: [img=131x60]1803573b37e0d10.png[/img] C: [img=135x60]1803573b4227ca7.png[/img] D: [img=127x60]1803573b4d1b46e.png[/img]
- 假设样本 [img=114x23]1803380d77924c9.png[/img]来自正态总体[img=65x27]1803380d80c1dd8.png[/img]。总体数学期望[img=11x18]1803380d8922f64.png[/img]已知,则下列估计量中是总体方差[img=18x22]1803380d90a53c7.png[/img]的无偏估计是() A: [img=116x60]1803380d987dfac.png[/img] B: [img=131x60]1803380da3db494.png[/img] C: [img=135x60]1803380daf515b2.png[/img] D: [img=127x60]1803380db9bb766.png[/img]
- 假设样本[img=114x23]1803da23f797fb8.png[/img]来自正态总体[img=65x27]1803da24005546b.png[/img]。总体数学期望[img=11x18]1803da2409ff5a5.png[/img]已知,则下列估计量中是总体方差[img=18x22]1803da2413dfdb7.png[/img]的无偏估计是() A: [img=108x60]1803da24212d65c.png[/img] B: [img=133x60]1803da242c31456.png[/img] C: [img=135x60]1803da243650d15.png[/img] D: [img=143x60]1803da244353609.png[/img]
- 假设样本[img=114x23]1803da23f797fb8.png[/img]来自正态总体[img=65x27]1803da24005546b.png[/img]。总体数学期望[img=11x18]1803da2409ff5a5.png[/img]已知,则下列估计量中是总体方差[img=18x22]1803da2413dfdb7.png[/img]的无偏估计是() 未知类型:{'options': ['', '', '', ''], 'type': 102}