1231 PM Sun Mar 19 ""- '5' 77% - ' Lab #4 Educational Statistics v 1. The PISA Assessment: Visit the website: www.0ecd.org/pisa/aboutpisa/ to learn about this international education assessment. Watch the videos on the page. Briefly describe the PISA assessment and state three things that stood out to you from the video. 2. Computing Statistics: Use the first column of data from the 2012 PISA Assessment: www.0ecd.org/plsa/keyfindings/PlSA2012resultssnapshotVolumeIENG.pdf a. Create a histogram using 6 classes with a lower class limit of 350 and a class width of 50. Use the follow link to make the histogram: Histogram Maker (statscharts.com) b. Do the test scores appear to be normally distributed? Why or why not? c. Find the standard deviation of the test scores. d. According to the 6895997 Rule, 95% of the test scores are between which two values? e. Find the zscore and percentile value for each of the following countries: l. The United States ll. Singapore iii. Finland iv. The United Arab Emirates f. Compare the results of the 4 countries. What factors do you think attribute to any discrepancies? 3. The TIMSS Assessment: 0 Visit the website http:/ces.ed.gov/timss/ to learn about this international education assessment. How does the TIMSS assessment differ from the PISA assessment? Describe at least three differences. 4. Computing Statistics: Go to the website http:/ces.ed.gov/surveys/international/reports/ZO'I1timss g8math.asp#mathematic58table and look at the Math GB Percentiles table. You can also download an Excel copy of the table using the link in the upper right corner. Recall that the mean is the 50th percentile. Do the following: a. Create a histogram using 6 classes with a lower class limit of 350 and a class width of 50 . Use the follow link to make the histogram: Histogram Maker (statscharts.com) b. Do the test scores appear to be normally distributed? Why or why not? c. Find the standard deviation of the test scores. d. According to the 6895997 Rule, 95% of the test scores are between which two values? e. Find the zscore and percentile value for each of the following countries: i. The United States ii. Singapore iii. Finland iv. The United Arab Emirates f. Compare the results of the 4 countries with their own results on the PISA assessment. Which countries stayed at about the same percentile? Which countries changed percentiles? What factors do you think contributed to any changes you observed