【单选题】Which one is not the characteristic of Big Data according to Doug Laney?
A.
The wide range of the sources and quality.
B.
The long life cycle of the system.
C.
The fast speed that information moves through the system.
D.
The much larger datasets to be processed or stored.
【单选题】Which one is correct about probability sampling?
A.
A given size of the sample in simple random sample is drawn with the help of a ordered number chart.
B.
Sample members from a larger population are selected according to a random starting point but with a fixed, periodic interval in systematic sampling.
C.
The sample size for each sub-group can be unfixed to get representative sample in stratified Random Sample.
D.
Some of elements of selected groups is sampled and studied in one-stage cluster sampling.
【单选题】Regarding AP view of chest X-ray following which one is not true
A.
Clavicle remains at the top of the lung field
B.
Ribs lies more horizontal
C.
Scapula outwards from the lung field
D.
Heart shadow looks larger
【简答题】The clauses in this sentence are marked (a) and (b), decide which one is the premise(s) and which one is the conclusion in its an argument. (a) A good society treasures its dissidents and maver...
【单选题】About the knee joint, which one is incorrect?
A.
It is the largest and most complicated joint in the body.
B.
It is formed by the joints among femur, tibia, fibula and patella.
C.
The anterior cruciate ligament arises in front of the intercondylar eminence of the tibia.
D.
The medial meniscus is larger and less curved than the lateral meniscus.
【单选题】In the 2SLS estimation, which one is incorrect?
A.
The number of instrumental variables must be larger than or equal to the number of endogenous variables.
B.
Every instrumental variable must be correlated with every endogeneous variable.
C.
The 2SLS estimator is consistent under regularity conditions in Chapter 7, though its asymptotic variance may be larger than the OLS estimator.
D.
must be finite and of full rank to ensure that the 2SLS estimator is well-defined.
【单选题】Which one is not the reason why American-born Asian women are paid better than Latinas?
A.
American-born Asian women have better education.
B.
Latinas have larger families to take care of.
C.
American-born Asian women are more intelligent.
D.
Latinas always live far away from their work place.
【单选题】Regarding the P value and the statistical conclusion, which one is wrong?
A.
the p-value of a statistical significance test represents the probability of obtaining values of the test statistic that are equal to or greater in magnitude than the observed test statistic.
B.
A p-value of 0.05, indicates that you would have only a 5 percent chance of drawing the sample being tested if the null hypothesis was actually true.
C.
The p-value is compared with the desired significance level of our test and, if it is larger, the result is significant.
D.
when P> α, not reject Ho (the difference is not statistically significant).
E.
when P≤ α, reject Ho , accept H1 (the difference is statistically significant).
【判断题】资本公积反映的是企业收到投资者出资额超过其在注册资本或股本中所占份额的部分及直接计入当期损益的利得和损失。
【单选题】患者,男性,岁,血栓性闭塞性脉管炎,下列护理措施不正确的是( )