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Week 3 - Chapter 4 Conference (STAT-200)

# Week 3 - Chapter 4 Conference (STAT-200) - INTRODUCT ION TO...

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I NTRODUCTION TO S TATISTICS (S TAT -200) W EEK #3 C ONFERENCE How do these data look and what do they mean (to you)? W F D C B A TOTA L 4,000 2,000 4,000 8,000 1,500 500 20,000 50 20 40 150 25 15 300 All KW W F D C B A 0.2 0.1 0.2 0.4 0.075 0.025 1.00 100% 0.17 0.07 0.13 0.5 0.08 0.05 1.00 100% The UPPER TABLE above show the HISTORICAL GRADE DISTRIBUTION IN ALL STAT CLASSES AND THEN IN KW'S (MY) STAT CLASSES. THE LOWER TABLE SHOWS THE RELATIVE FREQUENCIES OF THESE GRADES. Keep in mind that the RELATIVE frequencies are actually percentages; for example 0.17 = 17% of the students in my (KW) classes withdrew. Remember too that the percentages add up to 100%, which accounts for all possible grades. (The "W" grade means "Withdrawn.") The data in the TABLES is plotted below: Frequency Distribution plot (top) and a RELATIVE Frequency plot of the grade distributions (guesstimates) for ALL Stat 200 classes and my classes over the past 5-years. (The KW columns are VERY short in the FREQUENCY plot.) This week' DISCUSSION TOPICS are presented BELOW the Graphs (scroll down) In this Discussion, what do you think are: 1. The advantages of a RELATIVE frequency distribution vs

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Week 3 - Chapter 4 Conference (STAT-200) - INTRODUCT ION TO...

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