PRESENTATION AND DESCRIPTIVE STATISTICS

      SECTION A TEST SCORES FOR STUDENTS ON A STATISTICS QUIZ 11, 12, 95, 95, 51, 52, 62, 64, 66, 93, 70, 13, 85, 90, 84, 77, 88, 85, 76, 91, 80 Use the data presented above to answer the following four questions (Question 1-4) 1. Place the data in a Grouped Frequency Table with the columns as listed A B C D CLASS INTERVAL MIDPOINT TALLY FREQUENCY Create Ten Classes with a Class Interval Size of Ten, example, 0-9, 10-19, etc. 2. Draw a free hand histogram of the grouped data                   3. Calculate the Mean, Median, Mode and Range of the data MEAN MEDIAN MODE RANGE 4. Which measure of central tendency best describes the distribution and which is least effective? Defend your choices.           SECTION B Use the information below to answer the next four questions (Question 5-8) INVESTMENT “X” INVESTMENT “Y” ARITHMETIC MEAN (ANNUAL YIELD) 5% 8% STANDARD DEVIATION 2% 9% 5. Compare and describe the two investment outcomes         6. Which investment is capable of yielding a negative return?         7. Which investment is capable of yielding a double digit return?         8. Which investment would you choose? Defend your choice.         SECTION C Provide the symbol used for the following statistical concepts 9. Sample Mean _________ 10. Population Mean _______ 11. Summation _____________ 12. Population Variance _______ 13. Population Standard Deviation _______ 14. Estimated Population (Sample) Variance _______ 15. Estimated Population (Sample) Standard Deviation ________