※ 引述《doremi987 (抖雷咪)》之銘言：
: 小弟有幾個問題不會
: 請板上強者幫忙解答
: 謝謝
: 1.In the simple regression analysis, the width of
: the confidence interval estimate for the predicted
: value of Y is dependent on
: (A)The standard error of the estimate.
: (B)The value of X for which the prediction is being made.
: (C)The sample size.
: (D)All of the above.
他問回歸分析裡的Y的信賴區間會受何影響
看公式 三個都有
選D
: 2.A statistic associated with a hypothesis test is
: called a parametric statistic whenever
: (A)The hypothesis test is based on certain assumptions
: about the probability distribution of population
: values(e.g. that it is normal)
: (B)The hypothesis test is based on certain assumptions
: about the sizes of population parameters(e.g. that two population
: variance are equal)
: (C)The hypothesis test makes no assumptions about the
: statistical populations in question.
我覺得他問不是無母數統計的是指
就是知道呈現何種分配的 選A
: 3.The dependent variable in a regression problem
: (A)is almost always the variable which can be most easily
: measured directly.
: (B)is the variable whose value is to be estimated or predicted.
: (C)is the one which appears second in the listing of the two variables.
: (D)may be interchanged with the independent variable without changing
: the regression equation.
他問相依變數是？
就是問Y 只有B符合
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※ 編輯: ayabf 來自: 114.42.188.79 (02/20 22:54)