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1、A Study on the Quality of Achievement Test Paper of Junior English内容：Abstract: Based on the theory of Bachman Multiple Choice Question, which occupies 15% of the total score; Cloze, 10%; Reading Comprehension, 30%; Task-based Reading, 10%; and the last part, writing, which occupies 15% of the total
2、score.2.2. Reliability EstimateReliability is the extent to which test scores are consistent: a quality assessing whether candidates can get the same results on different dates (assuming there is no change in their ability). Reliability is a property of the test as a measuring instrument, but is als
3、o relative to the candidates taking the test: a test may be reliable with one population, but not with another. And next the author will make estimation about this test paper utilizing the instrument-SPSS.The following is the descriptive statistics of the results of the terminal junior test paper.Gr
4、aph1 统计量统计量LCMCQClozeRCTBRWritingTS有效40404040404040N缺失0000000均值13.909.954.3025.004.505.8863.50中值14.009.504.0028.005.006.0066.50众数1793286867标准差3.4772.8642.2896.4213.2263.61814.915方差12.0928.2035.24141.23110.41013.087222.462偏度-.605-.712.164-1.840-.005.045-.916偏度的标准误.374.374.374.374.374.374.374峰度-.532.3
5、02-1.1052.720-1.203-.903.728峰度的标准误.733.733.733.733.733.733.733极小值63160024极大值1915830101387Where: LC=Listening Comprehension, MCQ=Multiple Choice Question, RC=Reading Comprehension, TBR=Task-based Reading, TS=Total Score.And the following one is the normal distribution of the students total scores:Gra
6、ph2From the value of skewness and kurtosis, and the normal distribution of the total score, it can be discovered that the test scores are normally distributed. From the graph, it can be seen that the skewness is -0.916 and kurtosis 0.728, according to the English language testing theory, values for
7、skewness and kurtosis of between -2 and+2 indicate a reasonable normal distribution. That is to say, the data of this paper is reliable. And the standard deviation of this test paper is 14.915, which indicates that the discrimination of students scores is big. Therefore, we can say that the test res
8、ults are reliable and can reflect test takers language ability and are also the basis for guarantee the whole test papers validity. However, the mean of the fourth part (Reading Comprehension) is 25point, whose total score is 30 point, and the highest score is 30 point, the lowest one is 6 point. It
9、 is because most of the students are familiar with the material of the selected articles in the fourth part. The kurtosis of RC is 2.720, it is a positive kurtosis and indicates that this part is a little easy, and the discrimination of students score is small. The detail analysis of this part will
10、be analyzed later. 2.3. Validity Analysis Briefly, the validity of a test is the extent to which it measures what it is supposed to measure and nothing else. Every test, whether it is a short, informal classroom test or a public examination, should be as valid as the constructor can make it (Heaton,
11、 2000). There are several measures examining validity of a test such as face validity, content validity, concurrent validity, predicative validity, response validity and construct validity.The following graph shows the correlation coefficients among different parts as well as between each part and t
12、he total score of this test paper. Graph3相关性相关性LCMCQClozeRCTBRWritingTSPearson 相关性1.453*.291.485*.644*.476*.829*显著性（双侧）.003.069.002.000.002.000LCN40404040404040Pearson 相关性.453*1.284.346*.158-.105.497*显著性（双侧） .003.076.029.330.521.001MCQN40404040404040Pearson 相关性.291.2841.391*.181-.020.475*显著性（双侧） .06
13、9.076.013.265.902.002ClozeN40404040404040Pearson 相关性.485*.346*.391*1.248.363*.813*显著性（双侧） .002.029.013.124.021.000RCN40404040404040Pearson 相关性.644*.158.181.2481.515*.656*显著性（双侧） .000.330.265.124.001.000TBRN40404040404040Pearson 相关性.476*-.105-.020.363*.515*1.600*显著性（双侧） .002.521.902.021.001.000Writin
14、gN40404040404040Pearson 相关性.829*.497*.475*.813*.656*.600*1TS显著性（双侧） .000.001.002.000.000.000N40404040404040*. 在 .01 水平（双侧）上显著相关。*. 在 0.05 水平（双侧）上显著相关。According to Ferguson (2006), the correlation coefficients between each part and total score should be higher than 0.7 and the correlation between par
15、ts should be 0.30.6. The above graph shows that the part-total correlation coefficients of the test paper is not very satisfactory, only the correlation coefficients between reading comprehension or listening comprehension and the total score are above 0.7. What more, the correlation coefficients be
16、tween parts is not satisfied with the standard of 0.3-0.6, which indicates that the construct validity of this test paper is very low. 3. Detail Analysis about Reading ComprehensionThis part consists of three passages, the first passage is just an introduction about the American Museum of National History, the second one is a brief introduction about Tea, and the third one is about the celebrity Li Shizhen. The total score of this part is 30 point, which occupi
