Stats Quiz 1

# Stats Quiz 1 - 38 39 46 51 52 61 66 HBP AND AGE The data in...

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Question 1 : Frequency Table CLASSES FREQUENCY REL. FREQUENCY PERCENTAGE 10-19 8 .20 20% 20-29 3 .075 7.5% 30-39 1 .025 2.5% 40-49 0 .00 0% 50-59 7 .175 17.5% 60-69 9 .225 22.5% 70-79 7 .175 17.5% 80-89 5 .125 12.5% TOTAL: 40 1.00 100% Question 2 : Relative Frequency Table Score Frequency Rel. Frequency Percentage 30-40 2 0.08 8% 41-51 1 0.04 4% 52-62 3 0.12 12% 63-73 6 0.24 24% 74-84 5 0.20 20% 85-95 8 0.32 32% Total: 25 1.00 100% A. The missing relative frequency is 0.12 B. 19 students had a score of at least 63. C. If there are 800 students, 448 out of 800 got a score between 52 and 84. Question 3 : Stem-and-Leaf Display A . 31, 33, 35, 36, 40, 40, 41, 43, 45, 47, 48, 51, 51, 52, 55, 56, 59, 70, 71, 74, 76, 78, 84, 87, 87, 90, 93 B. Average= 58 Question 4 : Line Graph Stats Quiz 1 (2).doc

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HBP AND AGE 0 20 40 60 80 26 30
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Unformatted text preview: 38 39 46 51 52 61 66 HBP AND AGE The data in the graph infers that High Blood Pressure and age have a positive correlation. People in their mid 30’d and 40’s have a higher probability of having high blood pressure as well as people over the age of 65. Question 5 : Pie Graph Country Frequency Rel. Frequency Percentage U.S 261 0.52 52% U.K 79 0.16 16% Germany 61 0.12 12% France 28 0.06 6% Soviet Union 11 0.22 22% Japan 7 0.01 1% Other 57 0.11 11% # of Nobel Prize Winners U.S U.K Germany France Soviet Union Japan Other According the pie chart, the United States has the highest # of winners by more than 50%. Stats Quiz 1 (2).doc...
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## This note was uploaded on 01/16/2010 for the course STA sta 2000 taught by Professor Prof. during the Spring '09 term at CUNY Graduate Center.

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Stats Quiz 1 - 38 39 46 51 52 61 66 HBP AND AGE The data in...

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