安徽大学20092010学年第1学期《社会统计学》期末考试试卷(A卷).pdf

安徽大学 2009—2010 学年第 1 学期 《社会统计学》期末考试试卷（A 卷） （时间120 分钟） 院/系 专业 姓名 学号 题 号 一 二 三 四 五 六 七 总分 得 分 一、简答题 （每小题2分，共20分） 得 分 1. What kind of method will be used if the distribution of a quantitative variable is highly skewed? 2. What are the necessary conditions for confidence interval when the situation is for two variables? 3. For a 95% confidence level, what is the approximate margin of error for a sample proportion? 4. What is the confidence interval? 5. If X is a binomial random variable based on n trials with success probability p, and n is large, and then the random variable X is also approximately normal, what is conditions for that? 6. What relationship is it between binomial random variable and binomial experiment? 7. Assuming probability is 1/2 that a randomly selected individual will be taller than median height of a population, what is the probability that 3 randomly selected individuals will all be taller than the median? 8. What is Mutually Exclusive Events? 9. What kind of questions can be asked from a scatterplot? 10.For one categorical variable which graph tool will be used to describe the data? 《社会统计学》期末试卷A 第 1 页 共 7 页 二、表格分析题（每小题5分，共5分） 得 分 1. What kind of table is it? What kind variables are involved? Do you think there is a relationship between two variables in the population? 《社会调查研究