1. Explain the difference between descriptive and inferential statistics 2. List the four major methods of collecting data and explain their differences 3. Explain the difference between quantitative and qualitative data 4. Explain how populations and samples differ. 5. Suppose you are given a data set that classifies cach sample unit into one of the four categories: A.B.C. or D. You plan to create a computer database consisting of these data, and you decide to code the data as A=1, B=2, C3, and D-4. Are the data consisting of the classifications A.B.C or D qualitative or quantitative? After the data are imported as 1.2.3.0r4 would you classify them as qualitative or qualitative Explain your answers. El Nu Nyere STATII: INTRODUCTION TO STATISTICS AND PROBABILITY GROUPONE 6. College and universities are requiring an increasing amount of infor mation about applicants before making acceptance and financial aid decisions. Classify each of the following types of data required on a college application as quantitative or qualitative a. High school Aggregated Score WASSCE) h. High school class rank 6. Applicant's score on the Scholastie Assessment Test (SAT) or American College Testing (ACT) d. Gender of applicant e. Parents' income 1. Age of applicant 7. Consider the set of all students enrolled in your statistics course this term. Suppose you are interested in learning about the current grade point averages (GPA) of this group a. Define the population and variable of interest b. Is the variable qualitative or quantitative? c. Suppose you determine the GPA of every member of the class Would this represent a census or a sample? d. Suppose you determine the GPA of 10 members of the class. Would this represent a census or a sample e. If you determine the GPA of every member of the class and then calculate the average, how much reliability does this have as an "estimate of the class average GPA? 1. If you determine the GPA of every member of the class and then calculate the average, will the number you get necessarily be the same as the average GPA for the whole class? On what factors would you expect the reliability of the estimate to depend