X cf% X f cf cf% 80-89 4 38 70-79 5 60-69 8 50-59 7 40-49 5 30-39 6 20-29 3 m 100 6 6 28 34 89 5 4 22 29 76 4 5 18 21 55 3 6 13 14 37 2 3 7 24 1 4 4 100 79 64 8 1. What is total number of scores? 2. Which class interval has the least scores? 3. What percentage of scores are less than or equal to 63? 4. What score does the 54% of students got? 5. What percentage of scores are less than or equal to 49? 6. What score does the 79% of students got? 7. What percentage of scores fall between 50-59? NOTE: ANSWER ALWAYS ROUND OFF THE VALUES TO TWO DECIMAL POINTS 8. What is the mean score? 9. How many scores are less than or equal to 5? 10. What percentage of scores are less than 5? ANSWER x 9 7 5 7 9 4 9 5 8 7 Average 1.77 SD 3.14 Variance About: The data set presents the scores of students of BSP 2A in their midterm examination (AY 2021-2022 First Semester) in Psychological Statistics. ANSWER 1 Is the data above from population or a sample? 2 What is the avarage score in the exam? 3 Can you do a correlational analysis using the data? 4 What is the range of the scores? 5 What is the lowest score? 6 Which is the most frequently occuring score? 7 If we select a sample on the data, will we get the same parameter such as mean? 8 What is (EX)^3? 9 What is (EX-2)^2? 10 What is the real limits of x=4? x ANSWER 7 8 3 4 2 6 5 4 9 4 6 5 2 3 7 n=15 1. Create a standard normal distribution - 3 scores above and below the mean. 2. What is the variance of the scores? 3. What is the standard deviation of the scores? 4. What is the sum of squared deviation scores? 5. What percentage of scores fall between 9 and 4 based on the data? 6. Which score/s located between -.83 and +1.45 based on the data? 7. What percentage of scores located at -1 and .75 z-scores based on the unit standard distribution? 8. Which score is the most further from the mean based on the unit standard distribution? 9. Transform x=6 into z-score. 10. How many scores located between -2.7 and +1.85?