SOLUTIONS to Gathering Data Worksheet: 1. a) population: all American households sample: collection of 1353 American households surveyed b) population: all elementary school children sample: collection of 2625 elementary school children surveyed c) population: all people entering the mall within the assigned 3 hour period sample: every 6th person entering the mall within the 3 hour period 2. a) statistic part of 300,000 graduates are surveyed – b) parameter all assembly-line employees were included in the – c) statistic 360 credit cards were examined (not all) – 3. a) population: all readers of USA Today; sample: volunteers that responded to the survey; population parameter: percent who have at least one caffeinated drink among all readers of USA Today; sample statistic: percent who have at least one caffeinated drink among those who responded to the survey b) population: all starts in the galaxy; sample: the few stars selected for measurements; population parameter: mean (average) of distances between all stars and Earth; sample statistics: mean of distances between the stars in the sample and Earth 4. a) survey b) observation c) simulation d) experiment e) simulation 5. systematic, cluster, stratified, cluster, VRS, convenience, stratified, cluster, convenience, SRS 6. It is limited to people with computers. 7. Yes, it tends to encourage negative responses.
SOLUTIONS to Gathering Data Worksheet: 1. a) population: all American households sample: collection of 1353 American households surveyed b) population: all elementary school children sample: collection of 2625 elementary school children surveyed c) population: all people entering the mall within the assigned 3 hour period sample: every 6th person entering the mall within the 3 hour period 2. a) statistic – part of 300,000 graduates are surveyed b) parameter – all assembly-line employees were included in the c) statistic – 360 credit cards were examined (not all) 3. a) population: all readers of USA Today; sample: volunteers that responded to the survey; population parameter: percent who have at least one caffeinated drink among all readers of USA Today; sample statistic: percent who have at least one caffeinated drink among those who responded to the survey b) population: all starts in the galaxy; sample: the few stars selected for measurements; population parameter: mean (average) of distances between all stars and Earth; sample statistics: mean of distances between the stars in the sample and Earth 4. a) survey b) observation c) simulation d) experiment e) simulation 5. systematic, cluster, stratified, cluster, VRS, convenience, stratified, cluster, convenience, SRS 6. It is limited to people with computers. 7. Yes, it tends to encourage negative responses.
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