MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question
Can you explain 2.35
rd Edition re or S or S re e - 1- S n ›) e k e of i 80 H Page 68 proportionately.) 2.35 Does Stress Affect Academic Performance? Students in the ACHA-NCHA survey were asked, "Within the last 12 months, has stress negatively affected your academics?" Figure 2.4(a) shows a segmented bar chart for response frequencies, while Figure 2.4(b) shows a segmented bar chart for response relative frequencies as percents. Possible responses were "I haven't had any stress," shown in red, "I've had stress but it hasn't hurt my grades," shown in green, or "I've had stress and it has hurt my grades," shown in blue. 6000- 5000- 4000- (a) Did more males or more females answer the survey or did approximately equal numbers of males and females participate? Is graph (a) or (b) more helpful to answer this question? (b) Did a greater number of males or females say they had no stress or is it approximately equal between males and females? Is graph (a) or (b) more helpful to answer this question? Mon Sep Sho
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Transcribed Image Text:rd Edition re or S or S re e - 1- S n ›) e k e of i 80 H Page 68 proportionately.) 2.35 Does Stress Affect Academic Performance? Students in the ACHA-NCHA survey were asked, "Within the last 12 months, has stress negatively affected your academics?" Figure 2.4(a) shows a segmented bar chart for response frequencies, while Figure 2.4(b) shows a segmented bar chart for response relative frequencies as percents. Possible responses were "I haven't had any stress," shown in red, "I've had stress but it hasn't hurt my grades," shown in green, or "I've had stress and it has hurt my grades," shown in blue. 6000- 5000- 4000- (a) Did more males or more females answer the survey or did approximately equal numbers of males and females participate? Is graph (a) or (b) more helpful to answer this question? (b) Did a greater number of males or females say they had no stress or is it approximately equal between males and females? Is graph (a) or (b) more helpful to answer this question? Mon Sep Sho
Kindle for Mac - Statistics: Unlocking the Power of Data, 3rd Edition 20,000 15,000- 10,000 5000 0 Female Male (a) Frequency counts Figure 2.4 Has stress hurt your grades? Response. Stress affected grades Stress, but no effect No stress (c) Did a greater percent of males or females say they had no stress or is it approximately equal between males and females? Is graph (a) or (b) more helpful to answer this question? (d) Did a greater percent of males or females say that stress affected their grades or is it approx- imately equal between males and females? Is graph (a) or (b) more helpful to answer this question? FINANCIAL INCENTIVES TO QUIT SMOK- 100 80 60 40. 20- 0 Page 69 of i < > 2.1 Categorical Variables Male Female (b) Relative frequency counts Response Stress affected grades Stress, but no effect No stress 80 69 agreed to participate. However, only 146 of the 1053 smokers assigned to the Deposit group agreed to participate (since they had to risk some of their own money). Set up a two-way table and compare the participation rates between subjects assigned to the two treatment groups. 2.38 Accounting for Participation Rates Exer- cises 2.36 and 2.37 show that smokers who agreed to be in the Deposit group (having their own money at risk) were much more likely to quit smoking than those enrolled in the Reward group, but many
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Transcribed Image Text:Kindle for Mac - Statistics: Unlocking the Power of Data, 3rd Edition 20,000 15,000- 10,000 5000 0 Female Male (a) Frequency counts Figure 2.4 Has stress hurt your grades? Response. Stress affected grades Stress, but no effect No stress (c) Did a greater percent of males or females say they had no stress or is it approximately equal between males and females? Is graph (a) or (b) more helpful to answer this question? (d) Did a greater percent of males or females say that stress affected their grades or is it approx- imately equal between males and females? Is graph (a) or (b) more helpful to answer this question? FINANCIAL INCENTIVES TO QUIT SMOK- 100 80 60 40. 20- 0 Page 69 of i < > 2.1 Categorical Variables Male Female (b) Relative frequency counts Response Stress affected grades Stress, but no effect No stress 80 69 agreed to participate. However, only 146 of the 1053 smokers assigned to the Deposit group agreed to participate (since they had to risk some of their own money). Set up a two-way table and compare the participation rates between subjects assigned to the two treatment groups. 2.38 Accounting for Participation Rates Exer- cises 2.36 and 2.37 show that smokers who agreed to be in the Deposit group (having their own money at risk) were much more likely to quit smoking than those enrolled in the Reward group, but many
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