11/26 Reading article & translation

Q & A
Q1:what is the meaning of 95% confidence intervals?
何謂信賴區間(confidence interval)？利用樣本抽樣,將抽出的樣本在一定可性度之下,利用抽樣分配建立一區間,採用此區間預測母體分配特性。
在了解了抽樣分配(sampling distribution)的概念及其兩個重要定理後，我們即可從事推論統計兩大任務之一：由樣本得到的統計值（statistic）來推估母群體之數值或母數(parameters)。在日常生活中常看到的民意調查或選舉調查，就是這種估計的運用。
估計的方法有兩種：一為點估計(a point estimate)，也就是從樣本得到的統計值來估計母群體的數值。如果您做了一個民意調查後，報告說全部選民中有 42%的人會投給某候選人，此即為點估計的例子(就是估計有 42%選民會投給此人)。另一為區間估計(an interval estimate)。此涉及信賴區間（confidence intervals）的估計步驟。信賴區間是估計在一個範圍內的數值，而非單一數值。
區間估計提供我們感興趣參數可能的範圍，例如：μ的 95%信賴區間（95% Confidence Interval, 95% CI）告訴我們此區間有 95%的機會會涵蓋真實母群體平均數。
影響區間大小的因素包括信心水準與母族群的變異數或標準偏差
意義：如為常態分布時,有95%的機會測量到的樣本數據會落在信賴區間範圍內
信賴區間 (Confidence Interval, CI) 有95%的信心確定，群體的正確數值會落在這個數值範圍內 Quantifies the uncertainty in measurement. It is usually reported as a 95% CI which is the range of values within which we can be 95% sure that the true value for the whole population lies.
95％信賴區間:95％信賴區間是從樣本數據計算出來的一個區間，保證在所有樣本當中，有95％會把真正的母體參數包含在區間之中。

Q2:How to decrease the different in the Bland and Altman method?
ANS:That will need to figure out the meaning of the difference in this paragragh at first,because it is too small variable that not so important to decrease the different.

Q3:some examples inside the article need all mention out or chose the most important one to explaination
ANS:main point(theme of article) <----> explain clearly ,if it is the main point ,you may need to make it clearly ,until the reader understand whart you mention!!

Q4:What is the means of positive correlation in concurrent validity?
同時效度(concurrent validity):自編的測驗與同時間的效標測驗，求其相關。目的在估計或診斷目前的實際情況。
Concurrent validity is a parameter used in sociology, psychology, and other psychometric or behavioral sciences. Concurrent validity is demonstrated where a test correlates well with a measure that has previously been validated. The two measures may be for the same construct, or for different, but presumably related, constructs.
positive correlation :An obvious concern relates to the validity of the test against which you are comparing your test.
http://allpsych.com/researchmethods/validityreliability.html