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作者 peiwinds 在 PTT [ Statistics ] 看板的留言(推文), 共48則
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18F推:我覺得是Independent 因為研究的條件也不一樣02/26 15:14
2F推:第一題是對的,如果有工程計算機可以用Σ按=0.999992802/24 18:12
3F→:第二題感覺像是二項分配,因為他是四個都超速但是只有三02/24 18:13
4F推:台測速機成功02/24 18:15
5F→:負二項的實驗結構是直到"第一次成功"02/24 18:16
7F→:樓上正解02/25 14:06
1F推:認真回答推02/21 21:32
5F→:SSReg/SST ?02/10 21:58
3F推:然後你在用 190 * C5取x * 0.5^x * 0.5^(5-x)求期望次數02/10 14:28
2F→:所以是A???02/01 21:15
5F→:請問y大,就算給定確定H0為真也一樣會有型二錯誤的風險02/02 10:50
6F→:是這樣嗎? 謝謝回答02/02 10:50
1F推:老實說第一題我覺得是True耶....XD02/01 19:19
2F→:因為中位數就是第50百分位數阿02/01 19:20
1F推:連續變數只是一個近似數,例如:年齡、身高、體重、年資01/29 12:12
2F→:(即使曾中斷亦可以再接)01/29 12:12
3F→:間斷變數,例如:小孩數目、人數、出國次數等01/29 12:12
4F→:by google01/29 12:12
9F→:嗯嗯 謝謝 我搞懂了01/27 11:24
11F→:的什麼XD01/29 00:30
2F推:柴比雪夫雙邊機率和 P(|X-μ|≦40)=1-(10^2/40^2)=0.937501/27 15:31
3F→:X-μ = 215 - 175 , 應該是這樣算吧01/27 15:32
4F推:啊我打錯了,這不是雙邊機率和,是被夾在中間的機率和01/27 15:34
5F→:不過答案應該是0.9375沒錯@@01/27 15:34