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10. Consider the wage equation $\ln(wagei) = \beta0 + \beta1 educi + ui$, where ui contains unobserved ability abilityi and local labor-market quality Li. Assume Cov(educi, abilityi) > 0and Li directly affects wages. A proposed instrument is distance to nearest college, zi. Suppose zi is strongly correlated with Li (e.g. urban areas have smaller distance and higher wages even holding education fixed), and $L_i$ is omitted from the regression. Which statement is most correct?(A) The exclusion restriction may fail because \( z{i} \) can affect \( \ln (wage{i}) \) through \( L{i} \), so \( Cov(z{i},u_{i}) \) may be nonzero.(B) If is always consistent regardless of \( L_i \)(C) Adding an intercept is sufficient to control for \( L_{i} \)(D) If OLS is biased, IV must be unbiased in finite samples

9. Suppose you estimate a log-level model $\ln(yi) = \beta0 + \beta1 xi + ui, \quad yi > 0,$with $E(ui \mid xi) = 0$. Using the standard approximation for small changes, which interpretation of $\beta_1$ is correct?(A) A one-unit increase in \( x \) changes \( y \) by exactly \( \beta_{1} \) units(B) A one-percent increase in \( x \) changes \( y \) by approximately \( \beta_{1} \) percent(C) A one-unit increase in \( x \) changes \( E(y \mid x) \) by approximately \( 100\beta_{1} \) percent(D) \( \beta_{1} \) is the price elasticity of demand

8. Let a categorical variable $Gi \in \{1,2,3,4\}$ and define dummies $D{ki} = \mathbf{1}\{Gi = k\}$, $k = 1,2,3,4$. Consider the regression with an intercept: $yi = \beta0 + \beta1 D{1i} + \beta2 D{2i} + \beta3 D{3i} + \beta4 D{4i} + ui$. Which statement is correct?(A) The model is identified because the dummies are mutually exclusive(B) The model is not identified because \( \sum{k=1}^{4} D{ki} = 1 \) for all \( i \); drop one dummy or drop the intercept(C) The model is identified if \( n \) is large enough(D) Identification fails only if one group has zero observations試題隨卷繳交接背面4國立臺北大學 115 學年度碩士班一般入學考試試題系(所)組別：經濟學系科 目：統計學第4頁 共4頁☑可 ☐不可使用計算機

4. Think about a time when you were trying to make yourselfunderstood in English. What did you do, verbally andnonverbally, to convey your ideas when you lacked thevocabulary and/or the grammatical structures you need?Were you successful at being understood? Why or why not?(25%)

3. What are the differences between listening ascomprehension and listening as acquisition?(25%)

2. How does an individual’s native language influence hisworld view? Do we find similar influence from his secondlanguage? Respond to these questions by referring to yourpersonal experiences.(25%)

考前60天◆經濟學

講師：Terry Tung

簡介：高普考、初考、三四五等、國營適用！ 個經＆總經 6 大章節分類(供需、成本、市場、凱因斯、成長、貨幣) 章...

教育統計

講師：Terry Tung

簡介：國家考試考古題整理

這是我的課程

講師：陳耘得

簡介：這是測試

Ua

章節：U

V

章節：V

Y

章節：Y

3.關於節儉的矛盾，下列敘述何者錯誤：（A)誘發性儲蓄下降的幅度會大於自發性儲蓄增 加的幅度(B)此時投資完全為自發性投資(C)當自發性儲蓄提高時，其實際達成的儲 蓄反而下降(D)儲蓄意願提高時，透過乘數效果會使均衡產出下降

8. 我國之農產品進口採取全方位零關稅措施，以增加消費選擇(A)O(B)X

13.下列有關股四頭肌（quadriceps femoris）的敘述，何者錯誤？ (A)股四頭肌收縮可伸直小腿（extend leg at knee joint） (B)股四頭肌收縮可屈曲大腿（flex thigh at hip joint） (C)股四頭肌的外側部可作為肌肉注射位置 (D)股四頭肌的內側部是股三角（femoral triangle）的內側邊界

57. 如圖，∆QA1A2 是 \( \overline{A_1A_2} \)= 1 的直角三角形。已知 ∠QA1A2 = 30° ，∠QA2A1 = 90° ，線 段$\overline{A_2A_3} \perp \overline{A_1Q}$, $\overline{A_3A_4} \perp \overline{A_2Q}$, $\overline{A_4A_5} \perp \overline{A_3Q}$ 按照此規則不斷類推，試問線段\( \overline{A_2A_3} \), \( \overline{A_3A_4} \) ，…，\( \overline{A_{11}A_{12}} \)，的長度之和等於多少？  (A)\( \frac{1023}{1024} \)(B)\(1 \frac{1023}{1024}\)(C)\( \frac{511}{512} \) (D)\(1^{\frac{511}{512}}\)

72.關於吐氣末二氧化碳分壓（PETCO2）減少的原因，下列敘述何者錯誤？ (A)有效通氣增加(B)二氧化碳產生減少(C)肺栓塞(D)心輸出量增加

(一)桁架結構靜不定度（Degree of Static Indeterminacy）是多少？（5 分）