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Cumulative Relative Frequency 50 Relative Frequency 16. Complete the tables using the data provided: Survival Length (in months) Frequency 0.5-6.5 6.5-12.5 12.5-18.5 18.5-24.5 24.5-30.5 30.5-36.5 36.5-42.5 42.5-48.5 Table 1.27 Researcher A Cumulative Relative Survival Length (in months) Relative Frequency Frequency Frequency 0.5-6.5 6.5-12.5 12.5-18.5 18.5-24.5 24.5-30.5 30.5-36.5 36.5-45.5 Table 1.28 Researcher B 7. Determine what the key term data refers to in the above example for Researcher A. List two reasons why the data may differ. Can you tell if one researcher is correct and the other one is incorrect? Whyv? Would you expect the data to be identical? Why or why not? Suggest at least two methods the researchers might use to gather random data. Suppose that the first researcher conducted his survey by randomly choosing one state in the nation and then randomly king 40 patients from that state. What sampling method would that researcher have used? Suppose that the second researcher conducted his survey by choosing 40 patients he knew. What sampling method buld that researcher have used? What concerns would you have about this data set, based upon the data collection method? e the following data to answer the next five exercises: Two researchers are gathering data on hours of video games played school-aged children and young adults. They each randomly sample different groups of 150 studento i hool. They collect the following data. T AL Hours Played

Cumulative Relative Frequency 50 Relative Frequency 16. Complete the tables using the data provided: Survival Length (in months) Frequency 0.5-6.5 6.5-12.5 12.5-18.5 18.5-24.5 24.5-30.5 30.5-36.5 36.5-42.5 42.5-48.5 Table 1.27 Researcher A Cumulative Relative Survival Length (in months) Relative Frequency Frequency Frequency 0.5-6.5 6.5-12.5 12.5-18.5 18.5-24.5 24.5-30.5 30.5-36.5 36.5-45.5 Table 1.28 Researcher B 7. Determine what the key term data refers to in the above example for Researcher A. List two reasons why the data may differ. Can you tell if one researcher is correct and the other one is incorrect? Whyv? Would you expect the data to be identical? Why or why not? Suggest at least two methods the researchers might use to gather random data. Suppose that the first researcher conducted his survey by randomly choosing one state in the nation and then randomly king 40 patients from that state. What sampling method would that researcher have used? Suppose that the second researcher conducted his survey by choosing 40 patients he knew. What sampling method buld that researcher have used? What concerns would you have about this data set, based upon the data collection method? e the following data to answer the next five exercises: Two researchers are gathering data on hours of video games played school-aged children and young adults. They each randomly sample different groups of 150 studento i hool. They collect the following data. T AL Hours Played

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Cumulative Relative Frequency 50 16. Complete the tables using the data provided: Frequency Relative Frequency Survival Length (in months) 0.5-6.5 6.5-12.5 12.5-18.5 18.5-24.5 24.5-30.5 30.5-36.5 36.5-42.5 42.5-48.5 Table 1.27 Researcher A Relative Frequency Cumulative Relative Frequency Survival Length (in months) Frequency 0.5-6.5 6.5-12.5 12.5-18.5 |18.5-24.5 24,5-30.5 30.5-36.5 36.5-45.5 Table 1.28 Researcher B 7. Determine what the key term data refers to in the above example for Researcher A. . List two reasons why the data may differ. Can you tell if one researcher is correct and the other one is incorrect? Why? Would you expect the data to be identical? Why or why not? Suggest at least two methods the researchers might use to gather random data. Suppose that the first researcher conducted his survey by randomly choosing one state in the nation and then randomly king 40 patients from that state. What sampling method would that researcher have used? Suppose that the second researcher conducted his survey by choosing 40 patients he knew. What sampling method puld that researcher have used? What concerns would you have about this data set, based upon the data collection method? e the following data to answer the next five exercises: Two researchers are gathering data on hours of video games played school-aged children and young adults. They each randomly sample different groups of 150 students from the same hool. They collect the following data. Hours Played per Week Frequency Relative Frequency 0-2 Table 1.29 Researche 26 0.17 Cumulative Relative Frequency 0.17 free at http://cnx orole
Transcribed Image Text:Cumulative Relative Frequency 50 16. Complete the tables using the data provided: Frequency Relative Frequency Survival Length (in months) 0.5-6.5 6.5-12.5 12.5-18.5 18.5-24.5 24.5-30.5 30.5-36.5 36.5-42.5 42.5-48.5 Table 1.27 Researcher A Relative Frequency Cumulative Relative Frequency Survival Length (in months) Frequency 0.5-6.5 6.5-12.5 12.5-18.5 |18.5-24.5 24,5-30.5 30.5-36.5 36.5-45.5 Table 1.28 Researcher B 7. Determine what the key term data refers to in the above example for Researcher A. . List two reasons why the data may differ. Can you tell if one researcher is correct and the other one is incorrect? Why? Would you expect the data to be identical? Why or why not? Suggest at least two methods the researchers might use to gather random data. Suppose that the first researcher conducted his survey by randomly choosing one state in the nation and then randomly king 40 patients from that state. What sampling method would that researcher have used? Suppose that the second researcher conducted his survey by choosing 40 patients he knew. What sampling method puld that researcher have used? What concerns would you have about this data set, based upon the data collection method? e the following data to answer the next five exercises: Two researchers are gathering data on hours of video games played school-aged children and young adults. They each randomly sample different groups of 150 students from the same hool. They collect the following data. Hours Played per Week Frequency Relative Frequency 0-2 Table 1.29 Researche 26 0.17 Cumulative Relative Frequency 0.17 free at http://cnx orole
Use the following information to answer the next seven exercises: Studies are often done by pharmaceutical companies to determine the effectiveness of a treatment program. Suppose that a new AIDS antibody drug is currently under study. It is given to patients once the AIDS symptoms have revealed themselves. Of interest is the average (mean) length of time in months patients live once starting the treatment. Two researchers each follow a different set of 40 AIDS patients from the start of treatment until their deaths. The following data (in months) are collected. Researcher A: 3; 4; 11; 15; 16; 17; 22; 44; 37; 16; 14; 24; 25; 15; 26; 27; 33; 29; 35; 44; 13; 21; 22; 10; 12; 8; 40; 32; 26; 27; 31; 34; 29; 17; 8; 24; 18; 47; 33; 34 Researcher B: 3; 14; 11; 5; 16; 17; 28; 41; 31; 18; 14; 14; 26; 25; 21; 22; 31; 2; 35; 44; 23; 21; 21; 16; 12; 18; 41; 22; 16; 25; 33; 34; 29; 13; 18; 24; 23; 42; 33; 29
Transcribed Image Text:Use the following information to answer the next seven exercises: Studies are often done by pharmaceutical companies to determine the effectiveness of a treatment program. Suppose that a new AIDS antibody drug is currently under study. It is given to patients once the AIDS symptoms have revealed themselves. Of interest is the average (mean) length of time in months patients live once starting the treatment. Two researchers each follow a different set of 40 AIDS patients from the start of treatment until their deaths. The following data (in months) are collected. Researcher A: 3; 4; 11; 15; 16; 17; 22; 44; 37; 16; 14; 24; 25; 15; 26; 27; 33; 29; 35; 44; 13; 21; 22; 10; 12; 8; 40; 32; 26; 27; 31; 34; 29; 17; 8; 24; 18; 47; 33; 34 Researcher B: 3; 14; 11; 5; 16; 17; 28; 41; 31; 18; 14; 14; 26; 25; 21; 22; 31; 2; 35; 44; 23; 21; 21; 16; 12; 18; 41; 22; 16; 25; 33; 34; 29; 13; 18; 24; 23; 42; 33; 29
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