- 190 Statistics And Research Methodology A Dentre Comertation Questions G 1 This Is A Pure Logic Question Note That The 1 (40.48 KiB) Viewed 84 times
dided to What would be 6. Given the following distribution, Find de 121 F 100 120 150 220 wed. The mode the value for What is the 5 of the data? 7. A runner has the following times in the neile run. What is the standard deviation of his time Dints. The estions 1 S8 402 190 3.16 403 413 68.64 and S. & Scores by college students on an achievement test appear below *GPA 132 136 138 140 1152 152 151 151 145 146 147 14 162 162 163 165 166 148 149 150 151 1511 14 17123177 Calculate the following RAT ΣΧ. EX M 9. Which of the following has the highest frequency on any given parametric distribution of scores (symmetrical or slightly skewed): a Mean b. Median Mode
1. This is a pure logic question. Note that the standard normal curve is divided into sia deviations. Suppose you had IQ scores with a range from 60 to 132. What would be your best guess as to the S. of those IQ scores? 2. John is 1.98 S below the mean. What is John's z-score? What is John's approximate percentile rank? 3. You have scores that range from 40 to 180. The curve is positively skewed. The mode is 60. Will the value of the median and mean be larger or smaller than the value for the mode? 4. Bill takes an organic chemistry test and scores 32 out of 48 possible points. The mean for the test was 33 and the S, was 6.989. Each of the following questions pertain to these very important and world-saving facts. What percent of the questions did Bill get correct? How many S, is Bill above or below the ? The professor wishes to convert scores to a new scale with a mean of 68.64 and of 14.537. What is Bill's score on this new scale? What is Bill's percentile rank (hint score)? 5. Distribution: X is the amount time studied cach day. Y is that person's GPA Student Sane Lamy Bill Y 1 hour, 32 minutes 21 2 hours 2.0 9 4 hours 45 minutes 38 3.9 2 hours 30 minutes 28 3 hours 10 minutes 31 Student Vicky Bud George 4 hours 5 hours 20 mins 23 39 3 hours. 45 minutes 4 2 hours 45 minutes 3.9 1 hour 50 mins 24 18 Kathy 50 minutes What is the range of 2 What is (watch apples and oranges)? What is George's more on variable
6. Given the following distribution, find the mean. X 1001 1203 150 2 1905 220 3 2801 What is the S. of the data? 7. A runner has the following times in the one-mile run. What is the standard deviation of his times? X 4.32 4.58 4.02 3.90 3.86 4.03 4.13 8. Scores by college students on an achievement test appear below. 132 136 138 140 142 132 152 153 154 151 144 145 146 147 147 162 162 163 165 166 148 149 150 151 151 168 169 171 173 177 Calculate the following Ex ΣΧ M 9. Which of the following has the highest frequency on any given parametric distribution of scores (symmetrical or slightly skewed): 2 Mean b. Median Mode